Dr. Md. Mokter Hossain | Bangladesh Agricultural University (original) (raw)
Papers by Dr. Md. Mokter Hossain
Environment Control in Biology, 2010
Journal of the Bangladesh Agricultural University
Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore,... more Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. This study was consisted with five varieties of tomato (BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-14, and BARI Tomato-15) and four levels of NaCl salt solution (0, 50, 100 and 150 mM). Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media. The highest seed germination (68.25%) was recorded in untreated control (0 mM) condition and the lowest in 150 mM salt solution ((5.92%). In combination of variety and salt concentration, BARI Tomato-2 gave the highest germination (88.33%) under 0 mM salinity condition and the lowest (2.92%) in BARI Tomato-3 with 150 mM salt so...
International Journal of Agricultural Technology,, 2014
The study was conducted in order to examine the effects of foliar application of different chemic... more The study was conducted in order to examine the effects of foliar application of different chemical solutions on fruit setting, cracking and quality of litchi. The study was carried out at the Germplasm Centre of Fruit Tree Improvement Program (FTIP), Bangladesh Agricultural University, Mymensingh. The experiment comprised two factors viz., varieties (China-3 and Mongolbari) and ten pre harvest treatments [Control (T 0), magic growth 0.5, 1.0 and 2.0 ml/L water (T 1 , T 2 and T 3 , respectively), boron 1.0, 2.0 and 3.0 g/L water (T 4 , T 5 and T 6 , respectively) and zinc 1.0, 2.0 and 3.0 g/L water (T 7 , T 8 and T 9 , respectively)]. The experiment was laid out in a three replicated randomized complete block design. The result showed that variety China-3 exhibited the highest percentage of fruit setting at 20, 40 and 60 days after fruit setting (DAFS)(63.84, 47.69 and 39.17%, respectively), normal fruits (72.03%) and maximum total soluble solids (TSS) (21.23 0 Brix), total sugar (14.20%), reducing sugar (10.58%) content, pulp pH (4.54) and sugar/acid ratio (52.66). While Mongolbari variety showed the highest percentage of fruit dropping at 20, 40 and 60 DAFS (41.16, 58.81 and 67.41%, respectively), cracking (11.21%), defected fruits (31.50%) and maximum non reducing sugar (3.66%), vitamin C (30.32 mg/100g) and titratable acidity (0.58%) content. Almost all the parameters studied were found to be influenced by different foliar application treatments. The highest percentage of fruit setting at 20 and 40 DAFS (74.52 and 56.75, respectively) were found from T 5 and 51.24% was found from T 2 at 60 DAFS. The highest normal fruits (81.67%) and maximum total sugar (15.14%), reducing sugar (11.14%) content, pulp pH (5.18) and sugar/acid ratio (62.56) were found in T 5 treated fruits. TSS (21.55, 21.85 and 21.99 0 Brix) were found superior in T 2 , T 5 and T 8 treated fruits, respectively. The highest percentage of fruit dropping at 20, 40 and 60 DAFS (48.83, 68.00 and 76.27%, respectively), cracking (14.50%), defected fruits (39.17%) and maximum vitamin C (33.51 mg/100g) and titratable acid (0.73%) content were found from control. The maximum non reducing sugar (4.22%) was obtained from T 7 treated fruits. The maximum normal fruits (86.67%), total sugar (16.17%), reducing sugar (12.10%) content, pulp pH (5.72) and sugar/acid ratio (71.93) were recorded from China-3 provided with T 5. From the above findings it could be concluded that China-3 variety and treatment T 2 , T 5 and T 8 were found to be the best in respect of percent fruit setting, dropping, cracking, normal and defected fruits and biochemical compositions considering under the climatic conditions of Mymensingh.
Progressive Agriculture, 30 (3): 263-274., 2019
Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Medit... more Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Mediterranean region and its cultivation as a crop also began in that region. It is an important vegetable crop in the world. It is usually orange in color, though purple, black, red, white, and yellow cultivars exist. Carrot is a popular root crop from the nutritional point of view. It contains appreciable amount of carotene (10 mg/100 g), thiamine (0.04 mg/100 g), riboflavin (0.02 mg/100 g), carbohydrates (10.6%), protein (0.9 g/100 g), fat (0.2 g/100 g) and vitamin C (3mg/100 g). Sucrose is most abundant in carrot roots with endogenous sugar contents, 10 times more than glucose and fructose. It has got some important medicinal values (Sadhu, 1993). It is believed that eating carrots improves night vision. It is used as salad and as cooked vegetable in soups, stews, and curries etc. and also used for the preparation of pickles, jam, and sweet dishes (Kabir et al., 2000). The popularity of carrot is increasing day by day and very much confined in urban area of Bangladesh.
Journal of Horticulture and Postharvest Research, 2018
Ineffective storage technology is the major concern for the high level of postharvest loss in Ban... more Ineffective storage technology is the major concern for the high level of postharvest loss in Bangladesh. So, aiming to pick out the promising storage strategy of mango, this study was conducted. Research method: The mangoes cv. Amrapali were kept under two storage conditions viz., ambient and refrigerated (13 ± 2 °C and 15-20% RH) storage having five postharvest treatments including untreated control, perforated polyethylene bag, unperforated polyethylene bag, chitosan coating and edible oil (soybean) coating. Findings: The effect of storage conditions and postharvest treatments were found highly significant on the chemical parameters. Unperforated polyethylene bag and oil coating showed the highest titratable acidity (0.51 and 0.50%), the highest vitamin C (22.43 and 22.63 mg/100 g), and the lowest TSS (8.90 and 10.00%) under refrigerated condition and control showed the lowest titratable acidity (0.10%), the lowest vitamin C (12.50 mg/100 g), and the highest TSS (27.03%) under ambient condition at 9 days after storage. Unperforated polyethylene bag and oil coating under refrigerated conditions kept mangoes edible up to 9 days after storage. But after certain days of storage, unperforated polyethylene bag and oil coating developed off-flavor making mangoes inedible. Research limitations: More research should be conducted using other mango cultivars. Originality/Value: The perforated polyethylene bag under refrigerated condition showed a slower change of chemical parameters, simultaneously resulting in the longest shelf life (27 days) without producing any unwanted flavor and taste indicating efficient postharvest storage.
Turkish Journal of Agricultural and Natural Sciences, 2016
Various changes during growth and development are the prime concern for determining the optimum m... more Various changes during growth and development are the prime concern for determining the optimum maturity, maintain high nutritional quality and reduce postharvest losses of fruits. Therefore, this study was undertaken in order to determine the physical and chemical changes during growth and development of sapota fruit at different days after fruit set (DAFS). The experiment was carried out in a randomized complete block design with three replications. Two sapota varieties viz. BAU Sapota 1 and BAU Sapota 3 were used for this study. The results demonstrated that the physico-chemical properties of two sapota varieties changed with time progressed during growth and development. It was observed that some of the physical and chemical properties of those varieties reached a peak at 105 DAFS while most of the other characters exhibited better at 119 DAFS. Therefore, it can be concluded that BAU sapota variety will be ready to harvest at 119 DAFS which could provide better nutritional quality with minimum postharvest losses.
Environment Control in Biology, 2010
Progressive Agriculture, 2019
Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Medit... more Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Mediterranean region and its cultivation as a crop also began in that region. It is an important vegetable crop in the world. It is usually orange in color, though purple, black, red, white, and yellow cultivars exist. Carrot is a popular root crop from the nutritional point of view. It contains appreciable amount of carotene (10 mg/100 g), thiamine (0.04 mg/100 g), riboflavin (0.02 mg/100 g), carbohydrates (10.6%), protein (0.9 g/100 g), fat (0.2 g/100 g) and vitamin C (3mg/100 g). Sucrose is most abundant in carrot roots with endogenous sugar contents, 10 times more than glucose and fructose. It has got some important medicinal values (Sadhu, 1993). It is believed that eating carrots improves night vision. It is used as salad and as cooked vegetable in soups, stews, and curries etc. and also used for the preparation of pickles, jam, and sweet dishes (Kabir et al., 2000). The popularity of carrot is increasing day by day and very much confined in urban area of Bangladesh.
Journal of Bangladesh Agricultural University, 2019
Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore,... more Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. This study was consisted with five varieties of tomato (BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-14, and BARI Tomato-15) and four levels of NaCl salt solution (0, 50, 100 and 150 mM). Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media. The highest seed germination (68.25%) was recorded in untreated control (0 mM) condition and the lowest in 150 mM salt solution ((5.92%). In combination of variety and salt concentration, BARI Tomato-2 gave the highest germination (88.33%) under 0 mM salinity condition and the lowest (2.92%) in BARI Tomato-3 with 150 mM salt solution. However, percent germination, germination coefficient, radicle and plumule length, seedling vigor index, fresh weight of plumule and radicle, mean germination time, germination index decreased with increasing salt concentration as compared to untreated control condition. The findings indicated that BARI Tomato-2, BARI Tomato-4 and BARI Tomato-15 were relatively tolerant to salt stress than BARI Tomato-3 and BARI Tomato-14.
Journal of Biological Sciences, 2001
Journal of Horticulture and Postharvest Research, 2018
This study was conducted to evaluate the influences of variety and flowering time on physio-morph... more This study was conducted to evaluate the influences of variety and flowering time on physio-morphological and chemical characters of Dragon fruit. Research Method: Two varieties (BAU Dragon fruit 1 and BAU Dragon fruit 2) and four flowering times (May, June, July, and August) were selected for this investigation. The experiment was laid out in a randomized completely block design with five replications. Findings: Significant variations were observed between two varieties of Dragon fruit. It was found that BAU Dragon fruit 2 exhibited better performances on studied parameters as compared to BAU Dragon fruit 1. It was observed that at 38 days after fruit setting (DAFS), BAU Dragon fruit 2 produced the highest fruit length (10.01cm), fresh weight (307.94 g/fruit), dry weight (24.85 g/fruit), pulp weight (168.98 g/fruit), peel weight (91.32 g/fruit) and total soluble solids (TSS) (25.16% Brix) as compared to another variety. The combine effects of variety and flowering time showed that August flowering of BAU Dragon fruit 2 produced maximum fruit length (10.74 cm) and peel weight (115.65 g/fruit) while May flowering of BAU Dragon fruit 2 produced maximum fresh weight (456.50 g/fruit), pulp weight (302.12 g/fruit), moisture content (94.63%) and TSS (27.17 %Brix) as compared to other flowering time. In terms of time required to fruit maturity, August flowering BAU dragon fruit 2 matured earlier (30.6 days) than June flowering (35.04 days). Research limitations: Evaluation of more varieties of dragon fruit was a research limitation. Originality/value: These findings reveal that flowering time irrespective of variety has direct effects on fruit growth and development of Dragon fruit.
Journal of Agriculture, Food and Environment , 2020
This research was conducted at the Bangladesh Agricultural University Germplasm Centre (BAU-GPC),... more This research was conducted at the Bangladesh Agricultural University Germplasm Centre (BAU-GPC), Mymensingh during the period from May 2018 to September 2019 with a view to determine the effect of preharvest fruit bagging materials as well as variety on the yield, postharvest qualities and shelf life of dragon fruit. The two-factor experiment was comprised of two varieties viz., V 1 : BAU dragon fruit-1 (White flesh) and V 2 : BAU dragon fruit-2 (Red flesh) and five bagging materials viz., T 0 : non-bag (Control), T CB : cloth bag, T BB : brown paper bag, T BP : black polythene bag and T WP : white polythene bag. The experiment was laid out in a randomized complete block design with three replications. Results showed that fruit bagging with black polythene bag significantly improved fruit fresh weight (287.47 g), fruit diameter (7.91 cm), peel-flesh ratio (5.97), total dry weight (61.33 g/fruit), reduced days to maturity (22 days) and peel weight (48.11 g) of BAU dragon fruit-1 while black polythene bag extended shelf life (12.05 days), increased total soluble solids (TSS) (14.40%) and reduced peel thickness (0.21 cm) of BAU dragon fruit-2. From the findings of this study, it can be stated that preharvest fruit bagging with black polythene bag would be the best option as bagging material to improve the yield, postharvest quality and shelf life of dragon fruit.
Asian Journal of Plant Science, 2003
Environment Control in Biology, 2010
Journal of Agricultural Technology, 2011
This experiment was carried out to study the growth mechanisms of tomato fruits in relation to wa... more This experiment was carried out to study the growth mechanisms of tomato fruits in relation to water uptake and enlargement of cells in fruit pericarp. Growth parameters of tomato fruit such as cell layers, cell diameter and thickness of fruit pericarp, functional xylem vessels in fruit pedicel, water uptake rate and growth rate of fruits were investigated during entire growth period of tomato fruit grown hydroponically in a greenhouse. The results showed that fruit growth was strongly correlated with xylem functionality, water uptake rate and expansion of cells in fruit pericarp. This study also confirm that the cell division period in developing tomato fruit after pollination and fertilization was completed before 6 days after flowering (DAF) and following increment of fruit pericarp thickness was only due cell enlargement. Moreover, fruit growth was continued even after excision from plant which was coincided with water uptake rate and xylem functionality in fruit pedicel. The distribution of local relative growth rates and local water status of fruits indicated that the water potential gradient was existed in developing tomato fruit. This result also revealed that the most actively growing zone of fruit was located at the base of fruit from 0-5 mm at DAF 10.
Journal of Agriculture and Food Research, Mar 2022
The storage roots and leaves of sweet potato are potential sources of human nutrition. Variations... more The storage roots and leaves of sweet potato are potential sources of human nutrition. Variations may exist in the growth, yield, and nutritional contents of different genotypes. In this experiment, the growth, storage root yield, yield-contributing traits, leaf chlorophyll (Chlo) index, anthocyanin (Antho) index, flavonoid (Flavo) index, nitrogen-balance index (NBI), proximate compositions, and mineral content of the leaves and storage roots of sweet potato genotypes were investigated to identify nutrient-rich and high-yielding sweet potato. A field experiment was performed using the randomized complete block design, and a laboratory analysis was conducted using the completely randomized design with three replicates. Significant variations were observed in the growth, yield-contributing traits, yield of storage roots, leaf indices, proximate compositions, and mineral content of both organs of sweet potato genotypes. The range of the different components were as follows: storage root yield, 2.04 ± 0.18 t/ha to 48.80 ± 12.06 t/ha; dry matter contents of the storage roots and leaves, 20.26%-35.16%, and 10.24%-16.68%, respectively; leaf Chlo index, 27.25 ± 2.12 to 34.51 ± 0.71; Flavo index, 1.10 ± 0.12 to 1.59 ± 0.05; and Antho index, 0.18 ± 0.02 to 0.21 ± 0.03. Except nitrogen-free extract (NFE) and starch, the proximate compositions and mineral contents were higher in leaves than in storage roots. The mineral content of leaves were 0.80% ± 0.01%-1.29% ± 0.03% calcium (Ca), 0.24% ± 0.01%-0.40% ± 0.01% magnesium (Mg), 5.25% ± 0.02%-6.96% ± 0.04% phosphorus (P) and 1.22% ± 0.01%-1.41% ± 0.01% potassium (K). From the findings of this study, it was indicated that leaves are a good source of protein, fiber, and minerals particularly Ca, Mg, P, and K. Thus, storage roots including sweet potato leaves can be consumed to combat malnutrition, particularly in low income groups in developing countries.
Advances in Horticultural Science, 2018
The study was conducted to evaluate the physio-morphological variations of 21 pummelo genotype. T... more The study was conducted to evaluate the physio-morphological variations of 21 pummelo genotype. The experiment was carried out at the existing plantation of Bangladesh Agricultural University Germplasm Centre, Mymensingh, during September 2014 to June 2015. Results showed that different genotype exhibited differently in their physio-morphological features. Genotype Thai Jambura exhibited highest leaf and petiole wing length (16.77 cm and 11.63 cm, respectively), while maximum number of anthers (44.33) were recorded in genotype Green skin. The heaviest and lightest fruits were recorded in genotype Hybrid (1283.33 g) and Accession-52 (300 g). While the maximum weight of non-edible portion (463.33 g), pulp to peel ratio (3.97), thickness of pulp (11.50 cm), amount of juice (366.67 ml), total soluble solids (TSS) (18.67%), number of seeds (114) and weight of seeds (58 g) were found in genotype Hybrid. Correlation coefficient study indicated that leaf length, breadth, petiole wing length, fruit weight, weight of non-edible portion, seed weight, seed number/fruit had positive and highly significant association with leaf breadth, petiole wing breadth, weight of non-edible portion, pulp thickness, total weight of seeds/fruit and number of fruits/plant, respectively. In respect of path analysis, leaf breadth, petiole wing length, fruit weight, average weight of seed, %TSS, seed number/fruit had positive direct effect on fruits/plant indicating its importance as a selection criteria.
International Journal of Horticulture, Agriculture and Food Science, , 2017
A field experiment was conducted with two varieties viz; BARI strawberry-1 and Rabi strawberry-1 ... more A field experiment was conducted with two varieties viz; BARI strawberry-1 and Rabi strawberry-1 and three different planting dates viz; November 01, December 01 and January 01 at Bangladesh Agricultural University, Mymensingh, Bangladesh during November 2015 to March 2016 to study the effects of planting date and variety on growth and yield of strawberry. Significantly higher number of leaves per plant, plant height and leaf area with not significant but earlier flowering and fruit setting were observed in BARI strawberry-1 while number of fruits per plant, yield per plant, yield per hectare and individual fruit weight were found higher in Rabi strawberry-1 but variation was not significant and again dry matter and TSS content of fruit were found significantly higher in BARI strawberry-1. Among the planting dates 1 st November planting was found to have the maximum number of leaves per plant, plant height and leaf area with the longest duration to get flowering and fruit setting and finally resulted in maximum number of fruits per plant, yield per plant, yield per hectare and individual fruit weight followed by 1 st December and 1 st January planting. But dry content and TSS matter content was found maximum in 1 st January and 1 st December planting, respectively. Again, it was observed that BARI strawberry-1 with 1 st November planting gave maximum number of leaves per plant (13.66), tallest plant (22.50 cm) and maximum leaf area (189.38 cm 2), while shorter period for flowering (33.66 days), fruit setting (5.33 days) were recorded in BARI strawberry-1 with 1 st January planting and early fruit harvesting (16.66 days) was done from BARI strawberry-1 with 1 st December planting. On the other hand, number of fruits per plant (20.66) was found maximum in BARI strawberry-1 with November planting but fruit yield per plant (319.22 g), fruit yield per hectare (13.30 t/ha) and fresh individual fruit weight (20.45 g) were found maximum in Rabi strawberry-1 with 1 st November planting followed by BARI strawberry-1 with 1 st November planting. Thus, singly variety had no significant contribution to growth and yield characters which planting dates lonely possessed. Eventually, 1 st November planting in both Rabi strawberry-1 and BARI strawberry-1 yielded maximum having other positive growth characters.
Fundamental and Applied Agriculture, , 2017
Application of mulch materials in strawberry cultivation may have significant impact on quality f... more Application of mulch materials in strawberry cultivation may have significant impact on quality fruit production in Bangladesh. Therefore, this study was undertaken in order to explore the effects of different mulch materials on plant growth and fruit yield of strawberry (Fragaria× ananassa Duch.). The factorial experiment consisted of two strawberry varieties namely Rabi strawberry-1 and Rabi strawberry-3 and four mulch materials viz.no mulch (control), rice straw, water hyacinth and black polythene mulches. The experiment was laid out in a randomized complete block design with three replications. The influences of strawberry variety, mulch material and their combinations showed significant variations on plant growth, yield contributing characters and fruit yield. The two varieties differed significantly in respect of all the parameters studied. Number of leaves, leaf length, plant height and fruit yield were found higher in Rabi strawberry-1. It was also found that mulching treatments enhanced vegetative as well as reproductive growth of strawberry thus improved fruit yield as compared to control treatment. Among the mulch materials, black polythene gave the highest plant height (26.83 cm), leaf length (27.35 cm), number of leaves (8.00) at different growth stages, number of inflorescence (12.50), number of fruits plant-1 (33.00), fruit length (51.45 mm), fruit fresh weight (23.01 g fruit-1) and fruit yield (613.37 g plant-1).The combined effects of variety and mulch treatments showed significant variation on plant growth and yield of strawberry. However, the highest fruit yield (569.62 g plant-1) was achieved from the combination of Rabi strawberry-1 with black polythene mulch.
Environment Control in Biology, 2010
Journal of the Bangladesh Agricultural University
Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore,... more Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. This study was consisted with five varieties of tomato (BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-14, and BARI Tomato-15) and four levels of NaCl salt solution (0, 50, 100 and 150 mM). Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media. The highest seed germination (68.25%) was recorded in untreated control (0 mM) condition and the lowest in 150 mM salt solution ((5.92%). In combination of variety and salt concentration, BARI Tomato-2 gave the highest germination (88.33%) under 0 mM salinity condition and the lowest (2.92%) in BARI Tomato-3 with 150 mM salt so...
International Journal of Agricultural Technology,, 2014
The study was conducted in order to examine the effects of foliar application of different chemic... more The study was conducted in order to examine the effects of foliar application of different chemical solutions on fruit setting, cracking and quality of litchi. The study was carried out at the Germplasm Centre of Fruit Tree Improvement Program (FTIP), Bangladesh Agricultural University, Mymensingh. The experiment comprised two factors viz., varieties (China-3 and Mongolbari) and ten pre harvest treatments [Control (T 0), magic growth 0.5, 1.0 and 2.0 ml/L water (T 1 , T 2 and T 3 , respectively), boron 1.0, 2.0 and 3.0 g/L water (T 4 , T 5 and T 6 , respectively) and zinc 1.0, 2.0 and 3.0 g/L water (T 7 , T 8 and T 9 , respectively)]. The experiment was laid out in a three replicated randomized complete block design. The result showed that variety China-3 exhibited the highest percentage of fruit setting at 20, 40 and 60 days after fruit setting (DAFS)(63.84, 47.69 and 39.17%, respectively), normal fruits (72.03%) and maximum total soluble solids (TSS) (21.23 0 Brix), total sugar (14.20%), reducing sugar (10.58%) content, pulp pH (4.54) and sugar/acid ratio (52.66). While Mongolbari variety showed the highest percentage of fruit dropping at 20, 40 and 60 DAFS (41.16, 58.81 and 67.41%, respectively), cracking (11.21%), defected fruits (31.50%) and maximum non reducing sugar (3.66%), vitamin C (30.32 mg/100g) and titratable acidity (0.58%) content. Almost all the parameters studied were found to be influenced by different foliar application treatments. The highest percentage of fruit setting at 20 and 40 DAFS (74.52 and 56.75, respectively) were found from T 5 and 51.24% was found from T 2 at 60 DAFS. The highest normal fruits (81.67%) and maximum total sugar (15.14%), reducing sugar (11.14%) content, pulp pH (5.18) and sugar/acid ratio (62.56) were found in T 5 treated fruits. TSS (21.55, 21.85 and 21.99 0 Brix) were found superior in T 2 , T 5 and T 8 treated fruits, respectively. The highest percentage of fruit dropping at 20, 40 and 60 DAFS (48.83, 68.00 and 76.27%, respectively), cracking (14.50%), defected fruits (39.17%) and maximum vitamin C (33.51 mg/100g) and titratable acid (0.73%) content were found from control. The maximum non reducing sugar (4.22%) was obtained from T 7 treated fruits. The maximum normal fruits (86.67%), total sugar (16.17%), reducing sugar (12.10%) content, pulp pH (5.72) and sugar/acid ratio (71.93) were recorded from China-3 provided with T 5. From the above findings it could be concluded that China-3 variety and treatment T 2 , T 5 and T 8 were found to be the best in respect of percent fruit setting, dropping, cracking, normal and defected fruits and biochemical compositions considering under the climatic conditions of Mymensingh.
Progressive Agriculture, 30 (3): 263-274., 2019
Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Medit... more Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Mediterranean region and its cultivation as a crop also began in that region. It is an important vegetable crop in the world. It is usually orange in color, though purple, black, red, white, and yellow cultivars exist. Carrot is a popular root crop from the nutritional point of view. It contains appreciable amount of carotene (10 mg/100 g), thiamine (0.04 mg/100 g), riboflavin (0.02 mg/100 g), carbohydrates (10.6%), protein (0.9 g/100 g), fat (0.2 g/100 g) and vitamin C (3mg/100 g). Sucrose is most abundant in carrot roots with endogenous sugar contents, 10 times more than glucose and fructose. It has got some important medicinal values (Sadhu, 1993). It is believed that eating carrots improves night vision. It is used as salad and as cooked vegetable in soups, stews, and curries etc. and also used for the preparation of pickles, jam, and sweet dishes (Kabir et al., 2000). The popularity of carrot is increasing day by day and very much confined in urban area of Bangladesh.
Journal of Horticulture and Postharvest Research, 2018
Ineffective storage technology is the major concern for the high level of postharvest loss in Ban... more Ineffective storage technology is the major concern for the high level of postharvest loss in Bangladesh. So, aiming to pick out the promising storage strategy of mango, this study was conducted. Research method: The mangoes cv. Amrapali were kept under two storage conditions viz., ambient and refrigerated (13 ± 2 °C and 15-20% RH) storage having five postharvest treatments including untreated control, perforated polyethylene bag, unperforated polyethylene bag, chitosan coating and edible oil (soybean) coating. Findings: The effect of storage conditions and postharvest treatments were found highly significant on the chemical parameters. Unperforated polyethylene bag and oil coating showed the highest titratable acidity (0.51 and 0.50%), the highest vitamin C (22.43 and 22.63 mg/100 g), and the lowest TSS (8.90 and 10.00%) under refrigerated condition and control showed the lowest titratable acidity (0.10%), the lowest vitamin C (12.50 mg/100 g), and the highest TSS (27.03%) under ambient condition at 9 days after storage. Unperforated polyethylene bag and oil coating under refrigerated conditions kept mangoes edible up to 9 days after storage. But after certain days of storage, unperforated polyethylene bag and oil coating developed off-flavor making mangoes inedible. Research limitations: More research should be conducted using other mango cultivars. Originality/Value: The perforated polyethylene bag under refrigerated condition showed a slower change of chemical parameters, simultaneously resulting in the longest shelf life (27 days) without producing any unwanted flavor and taste indicating efficient postharvest storage.
Turkish Journal of Agricultural and Natural Sciences, 2016
Various changes during growth and development are the prime concern for determining the optimum m... more Various changes during growth and development are the prime concern for determining the optimum maturity, maintain high nutritional quality and reduce postharvest losses of fruits. Therefore, this study was undertaken in order to determine the physical and chemical changes during growth and development of sapota fruit at different days after fruit set (DAFS). The experiment was carried out in a randomized complete block design with three replications. Two sapota varieties viz. BAU Sapota 1 and BAU Sapota 3 were used for this study. The results demonstrated that the physico-chemical properties of two sapota varieties changed with time progressed during growth and development. It was observed that some of the physical and chemical properties of those varieties reached a peak at 105 DAFS while most of the other characters exhibited better at 119 DAFS. Therefore, it can be concluded that BAU sapota variety will be ready to harvest at 119 DAFS which could provide better nutritional quality with minimum postharvest losses.
Environment Control in Biology, 2010
Progressive Agriculture, 2019
Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Medit... more Carrot (Daucus carota L.) is a member of the Apiaceae family and considered to be native of Mediterranean region and its cultivation as a crop also began in that region. It is an important vegetable crop in the world. It is usually orange in color, though purple, black, red, white, and yellow cultivars exist. Carrot is a popular root crop from the nutritional point of view. It contains appreciable amount of carotene (10 mg/100 g), thiamine (0.04 mg/100 g), riboflavin (0.02 mg/100 g), carbohydrates (10.6%), protein (0.9 g/100 g), fat (0.2 g/100 g) and vitamin C (3mg/100 g). Sucrose is most abundant in carrot roots with endogenous sugar contents, 10 times more than glucose and fructose. It has got some important medicinal values (Sadhu, 1993). It is believed that eating carrots improves night vision. It is used as salad and as cooked vegetable in soups, stews, and curries etc. and also used for the preparation of pickles, jam, and sweet dishes (Kabir et al., 2000). The popularity of carrot is increasing day by day and very much confined in urban area of Bangladesh.
Journal of Bangladesh Agricultural University, 2019
Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore,... more Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. This study was consisted with five varieties of tomato (BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-14, and BARI Tomato-15) and four levels of NaCl salt solution (0, 50, 100 and 150 mM). Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media. The highest seed germination (68.25%) was recorded in untreated control (0 mM) condition and the lowest in 150 mM salt solution ((5.92%). In combination of variety and salt concentration, BARI Tomato-2 gave the highest germination (88.33%) under 0 mM salinity condition and the lowest (2.92%) in BARI Tomato-3 with 150 mM salt solution. However, percent germination, germination coefficient, radicle and plumule length, seedling vigor index, fresh weight of plumule and radicle, mean germination time, germination index decreased with increasing salt concentration as compared to untreated control condition. The findings indicated that BARI Tomato-2, BARI Tomato-4 and BARI Tomato-15 were relatively tolerant to salt stress than BARI Tomato-3 and BARI Tomato-14.
Journal of Biological Sciences, 2001
Journal of Horticulture and Postharvest Research, 2018
This study was conducted to evaluate the influences of variety and flowering time on physio-morph... more This study was conducted to evaluate the influences of variety and flowering time on physio-morphological and chemical characters of Dragon fruit. Research Method: Two varieties (BAU Dragon fruit 1 and BAU Dragon fruit 2) and four flowering times (May, June, July, and August) were selected for this investigation. The experiment was laid out in a randomized completely block design with five replications. Findings: Significant variations were observed between two varieties of Dragon fruit. It was found that BAU Dragon fruit 2 exhibited better performances on studied parameters as compared to BAU Dragon fruit 1. It was observed that at 38 days after fruit setting (DAFS), BAU Dragon fruit 2 produced the highest fruit length (10.01cm), fresh weight (307.94 g/fruit), dry weight (24.85 g/fruit), pulp weight (168.98 g/fruit), peel weight (91.32 g/fruit) and total soluble solids (TSS) (25.16% Brix) as compared to another variety. The combine effects of variety and flowering time showed that August flowering of BAU Dragon fruit 2 produced maximum fruit length (10.74 cm) and peel weight (115.65 g/fruit) while May flowering of BAU Dragon fruit 2 produced maximum fresh weight (456.50 g/fruit), pulp weight (302.12 g/fruit), moisture content (94.63%) and TSS (27.17 %Brix) as compared to other flowering time. In terms of time required to fruit maturity, August flowering BAU dragon fruit 2 matured earlier (30.6 days) than June flowering (35.04 days). Research limitations: Evaluation of more varieties of dragon fruit was a research limitation. Originality/value: These findings reveal that flowering time irrespective of variety has direct effects on fruit growth and development of Dragon fruit.
Journal of Agriculture, Food and Environment , 2020
This research was conducted at the Bangladesh Agricultural University Germplasm Centre (BAU-GPC),... more This research was conducted at the Bangladesh Agricultural University Germplasm Centre (BAU-GPC), Mymensingh during the period from May 2018 to September 2019 with a view to determine the effect of preharvest fruit bagging materials as well as variety on the yield, postharvest qualities and shelf life of dragon fruit. The two-factor experiment was comprised of two varieties viz., V 1 : BAU dragon fruit-1 (White flesh) and V 2 : BAU dragon fruit-2 (Red flesh) and five bagging materials viz., T 0 : non-bag (Control), T CB : cloth bag, T BB : brown paper bag, T BP : black polythene bag and T WP : white polythene bag. The experiment was laid out in a randomized complete block design with three replications. Results showed that fruit bagging with black polythene bag significantly improved fruit fresh weight (287.47 g), fruit diameter (7.91 cm), peel-flesh ratio (5.97), total dry weight (61.33 g/fruit), reduced days to maturity (22 days) and peel weight (48.11 g) of BAU dragon fruit-1 while black polythene bag extended shelf life (12.05 days), increased total soluble solids (TSS) (14.40%) and reduced peel thickness (0.21 cm) of BAU dragon fruit-2. From the findings of this study, it can be stated that preharvest fruit bagging with black polythene bag would be the best option as bagging material to improve the yield, postharvest quality and shelf life of dragon fruit.
Asian Journal of Plant Science, 2003
Environment Control in Biology, 2010
Journal of Agricultural Technology, 2011
This experiment was carried out to study the growth mechanisms of tomato fruits in relation to wa... more This experiment was carried out to study the growth mechanisms of tomato fruits in relation to water uptake and enlargement of cells in fruit pericarp. Growth parameters of tomato fruit such as cell layers, cell diameter and thickness of fruit pericarp, functional xylem vessels in fruit pedicel, water uptake rate and growth rate of fruits were investigated during entire growth period of tomato fruit grown hydroponically in a greenhouse. The results showed that fruit growth was strongly correlated with xylem functionality, water uptake rate and expansion of cells in fruit pericarp. This study also confirm that the cell division period in developing tomato fruit after pollination and fertilization was completed before 6 days after flowering (DAF) and following increment of fruit pericarp thickness was only due cell enlargement. Moreover, fruit growth was continued even after excision from plant which was coincided with water uptake rate and xylem functionality in fruit pedicel. The distribution of local relative growth rates and local water status of fruits indicated that the water potential gradient was existed in developing tomato fruit. This result also revealed that the most actively growing zone of fruit was located at the base of fruit from 0-5 mm at DAF 10.
Journal of Agriculture and Food Research, Mar 2022
The storage roots and leaves of sweet potato are potential sources of human nutrition. Variations... more The storage roots and leaves of sweet potato are potential sources of human nutrition. Variations may exist in the growth, yield, and nutritional contents of different genotypes. In this experiment, the growth, storage root yield, yield-contributing traits, leaf chlorophyll (Chlo) index, anthocyanin (Antho) index, flavonoid (Flavo) index, nitrogen-balance index (NBI), proximate compositions, and mineral content of the leaves and storage roots of sweet potato genotypes were investigated to identify nutrient-rich and high-yielding sweet potato. A field experiment was performed using the randomized complete block design, and a laboratory analysis was conducted using the completely randomized design with three replicates. Significant variations were observed in the growth, yield-contributing traits, yield of storage roots, leaf indices, proximate compositions, and mineral content of both organs of sweet potato genotypes. The range of the different components were as follows: storage root yield, 2.04 ± 0.18 t/ha to 48.80 ± 12.06 t/ha; dry matter contents of the storage roots and leaves, 20.26%-35.16%, and 10.24%-16.68%, respectively; leaf Chlo index, 27.25 ± 2.12 to 34.51 ± 0.71; Flavo index, 1.10 ± 0.12 to 1.59 ± 0.05; and Antho index, 0.18 ± 0.02 to 0.21 ± 0.03. Except nitrogen-free extract (NFE) and starch, the proximate compositions and mineral contents were higher in leaves than in storage roots. The mineral content of leaves were 0.80% ± 0.01%-1.29% ± 0.03% calcium (Ca), 0.24% ± 0.01%-0.40% ± 0.01% magnesium (Mg), 5.25% ± 0.02%-6.96% ± 0.04% phosphorus (P) and 1.22% ± 0.01%-1.41% ± 0.01% potassium (K). From the findings of this study, it was indicated that leaves are a good source of protein, fiber, and minerals particularly Ca, Mg, P, and K. Thus, storage roots including sweet potato leaves can be consumed to combat malnutrition, particularly in low income groups in developing countries.
Advances in Horticultural Science, 2018
The study was conducted to evaluate the physio-morphological variations of 21 pummelo genotype. T... more The study was conducted to evaluate the physio-morphological variations of 21 pummelo genotype. The experiment was carried out at the existing plantation of Bangladesh Agricultural University Germplasm Centre, Mymensingh, during September 2014 to June 2015. Results showed that different genotype exhibited differently in their physio-morphological features. Genotype Thai Jambura exhibited highest leaf and petiole wing length (16.77 cm and 11.63 cm, respectively), while maximum number of anthers (44.33) were recorded in genotype Green skin. The heaviest and lightest fruits were recorded in genotype Hybrid (1283.33 g) and Accession-52 (300 g). While the maximum weight of non-edible portion (463.33 g), pulp to peel ratio (3.97), thickness of pulp (11.50 cm), amount of juice (366.67 ml), total soluble solids (TSS) (18.67%), number of seeds (114) and weight of seeds (58 g) were found in genotype Hybrid. Correlation coefficient study indicated that leaf length, breadth, petiole wing length, fruit weight, weight of non-edible portion, seed weight, seed number/fruit had positive and highly significant association with leaf breadth, petiole wing breadth, weight of non-edible portion, pulp thickness, total weight of seeds/fruit and number of fruits/plant, respectively. In respect of path analysis, leaf breadth, petiole wing length, fruit weight, average weight of seed, %TSS, seed number/fruit had positive direct effect on fruits/plant indicating its importance as a selection criteria.
International Journal of Horticulture, Agriculture and Food Science, , 2017
A field experiment was conducted with two varieties viz; BARI strawberry-1 and Rabi strawberry-1 ... more A field experiment was conducted with two varieties viz; BARI strawberry-1 and Rabi strawberry-1 and three different planting dates viz; November 01, December 01 and January 01 at Bangladesh Agricultural University, Mymensingh, Bangladesh during November 2015 to March 2016 to study the effects of planting date and variety on growth and yield of strawberry. Significantly higher number of leaves per plant, plant height and leaf area with not significant but earlier flowering and fruit setting were observed in BARI strawberry-1 while number of fruits per plant, yield per plant, yield per hectare and individual fruit weight were found higher in Rabi strawberry-1 but variation was not significant and again dry matter and TSS content of fruit were found significantly higher in BARI strawberry-1. Among the planting dates 1 st November planting was found to have the maximum number of leaves per plant, plant height and leaf area with the longest duration to get flowering and fruit setting and finally resulted in maximum number of fruits per plant, yield per plant, yield per hectare and individual fruit weight followed by 1 st December and 1 st January planting. But dry content and TSS matter content was found maximum in 1 st January and 1 st December planting, respectively. Again, it was observed that BARI strawberry-1 with 1 st November planting gave maximum number of leaves per plant (13.66), tallest plant (22.50 cm) and maximum leaf area (189.38 cm 2), while shorter period for flowering (33.66 days), fruit setting (5.33 days) were recorded in BARI strawberry-1 with 1 st January planting and early fruit harvesting (16.66 days) was done from BARI strawberry-1 with 1 st December planting. On the other hand, number of fruits per plant (20.66) was found maximum in BARI strawberry-1 with November planting but fruit yield per plant (319.22 g), fruit yield per hectare (13.30 t/ha) and fresh individual fruit weight (20.45 g) were found maximum in Rabi strawberry-1 with 1 st November planting followed by BARI strawberry-1 with 1 st November planting. Thus, singly variety had no significant contribution to growth and yield characters which planting dates lonely possessed. Eventually, 1 st November planting in both Rabi strawberry-1 and BARI strawberry-1 yielded maximum having other positive growth characters.
Fundamental and Applied Agriculture, , 2017
Application of mulch materials in strawberry cultivation may have significant impact on quality f... more Application of mulch materials in strawberry cultivation may have significant impact on quality fruit production in Bangladesh. Therefore, this study was undertaken in order to explore the effects of different mulch materials on plant growth and fruit yield of strawberry (Fragaria× ananassa Duch.). The factorial experiment consisted of two strawberry varieties namely Rabi strawberry-1 and Rabi strawberry-3 and four mulch materials viz.no mulch (control), rice straw, water hyacinth and black polythene mulches. The experiment was laid out in a randomized complete block design with three replications. The influences of strawberry variety, mulch material and their combinations showed significant variations on plant growth, yield contributing characters and fruit yield. The two varieties differed significantly in respect of all the parameters studied. Number of leaves, leaf length, plant height and fruit yield were found higher in Rabi strawberry-1. It was also found that mulching treatments enhanced vegetative as well as reproductive growth of strawberry thus improved fruit yield as compared to control treatment. Among the mulch materials, black polythene gave the highest plant height (26.83 cm), leaf length (27.35 cm), number of leaves (8.00) at different growth stages, number of inflorescence (12.50), number of fruits plant-1 (33.00), fruit length (51.45 mm), fruit fresh weight (23.01 g fruit-1) and fruit yield (613.37 g plant-1).The combined effects of variety and mulch treatments showed significant variation on plant growth and yield of strawberry. However, the highest fruit yield (569.62 g plant-1) was achieved from the combination of Rabi strawberry-1 with black polythene mulch.