H P Chaturvedi | Shool of agriculture sciences & rural development ,Nagaland University ,Medziphema (original) (raw)
Papers by H P Chaturvedi
Indian journal of agricultural biochemistry/Indian Journal of Agricultural Biochemistry, 2024
Journal of agriculture and ecology research international, Apr 2, 2024
The Pharma Innovation Journal, 2020
The nature and magnitude of genetic divergence were assessed in 16 sesame genotypes. Based on the... more The nature and magnitude of genetic divergence were assessed in 16 sesame genotypes. Based on the relative magnitude of D2 values all the 16 genotypes were grouped in to 5 different clusters. Cluster I had 12 genotypes while remaining clusters II, III, IV and V had one genotype each. The average inter cluster distance was found to be highest between cluster III and IV (79.94) followed by cluster III and V (63.87) and cluster IV and V (62.64) whereas the lowest inter cluster distance was observed between cluster I and II (29.21). The higher inter cluster distance indicated the presence of more diversity among the genotypes included in these clusters. Thus the genotypes of cluster III and IV could be utilized as potential parents and crossing between these genotypes would result in heterotic expression for yield component traits. The relative contribution of different plant characters to the total genetic divergence estimated by D2 analysis indicated that capsule length contributed th...
Journal of Pharmacognosy and Phytochemistry, 2019
The study was carried out to estimate different genetic parameters in rice bean landraces of Naga... more The study was carried out to estimate different genetic parameters in rice bean landraces of Nagaland. Thirteen genotypes of rice bean were evaluated for yield and its components in the cropping seasons of 2016-2017 across six environments represented by different sowing dates. In each cropping season the genotypes were arranged in Randomized Block Design (RBD) with three sowing dates. The study revealed that phenotypic coefficient variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the traits in all the six environments. High PCV and GCV was observed for number of pods per plant, number of seeds per pod, plant height,100 seed weight and seed yield/plant, indicating the role of these characters for effective selection. The study also revealed that heritability in broad sense was high for days to flowering, pod length, number of pods per plant, number of seeds per pod, plant height, 80% maturity and100 seed weight indicating that the variation observed was mostly under genetic control and less influenced by environment. Overall high to moderate heritability with high genetic advance was observed for pod length, number of seeds per pod and 100 seed weight indicating additive gene control of these traits across the six environments and thus there is better scope for improvement of these traits through direct selection. On the basis of mean performance of all the genotypes, RbnG1, RbnG3, RbnG4, Rbng5, RbnG8, RbnG10 and RbnG13 was found promising among all the genotypes. The genotype RbnG8 was observed to be earliest genotype among all the genotypes studied. The best environment studied was Env4 and Env6.
Indian Research Journal Of Genetics and Biotechnology, May 25, 2014
Journal of Pharmacognosy and Phytochemistry, 2019
Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental o... more Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental open field condition of Genetics and Plant Breeding Department NU: SASRD for various genetic parameters, under Randomized Block Design. Fruit yield per plant was found to be positively and significantly correlated with days to first flowering, fruit length, fruit width, fresh fruit weight and dry fruit weight. Study revealed that fresh fruit weight contributed maximum positive direct effect on fruit yield per plant followed by plant height and 1000 seed weight. Fresh fruit weight exerted positive direct effect and also exhibited significant positive correlation with yield indicating a true relationship between the traits.
Perilla is an underutilized crop which comes under the category of minor oil seed crop. A field e... more Perilla is an underutilized crop which comes under the category of minor oil seed crop. A field experiment was conducted during the Kharif season (April-November) of the year 2016 at the experimental farm of Genetics and Plant Breeding under School of Agricultural Sciences and Rural Development (SASRD), Medziphema, Nagaland to study the nature and magnitude of genetic divergence in 15 Perilla genotypes and observations on 13 traits were recorded. Analysis of variance revealed significant differences among the different genotypes for all the traits under study. Based on relative magnitude of D 2 values 15 genotypes were grouped into six clusters. Cluster IV had highest landraces (4) followed by Cluster I (3) and the remaining clusters with two landraces each. Maximum genetic divergence was observed between Cluster V and Cluster VI and minimum genetic divergence was observed between Cluster I and Cluster II. Hence, the genotypes of cluster V and cluster VI could be utilized in hybridization program to achieve greater variability in the segregating generations. The analysis revealed maximum contribution of seed yield per plant followed by test weight, oil content and length of main inflorescence towards genetic divergence.
Journal of Pharmacognosy and Phytochemistry, 2020
The analysis of variance revealed significant differences among genotypes indicating high degree ... more The analysis of variance revealed significant differences among genotypes indicating high degree of variability in the material taken into account for the investigation. Highest PCV and GCV were recorded for no of capsules per plant, seed yield and test weight and no of primary branches indicating the presence of ample variations for these traits. High estimates of heritability with genetic advance was accounted for 50% flowering, no of primary branches, no of capsules per plant, test weight, oil content and seed yield. Therefore, selection of these traits is likely to accumulate more additive genes leading to further improvements of their performance and these traits maybe used as selection criteria in sesame breeding programme. For seed yield significant positive correlation were observed between, no of primary branches, no of capsules per plant, test weight and oil content indicating relative utility of these traits for selection. Path coefficient analysis revealed that test weig...
Environment and Ecology, 2010
В обществе, где остро ощущается нехватка товаров, главной задачей является их производство. В общ... more В обществе, где остро ощущается нехватка товаров, главной задачей является их производство. В обществе, где товаров производится намного больше, чем население может их потребить, а уровень конкуренции достаточно высок, проблема сбыта становится центральной. Потребитель занимает центральное место, за ним начинают в буквальном смысле слова охотиться, навязывая, убеждая, заставляя купить товар именно этой торговой марки. На смену традиционному подходу к экономике приходит новое понимание потребления. Потребление рассматривается уже не как процесс удовлетворения базисных человеческих потребностей, а новый социально-обусловленный процесс, который имеет свои истоки в культуре целого народа, поколения. Ключевые слова: поведенческая экономика, маркетинг, поведение потребителей, лояльность, доверие. In a society where shortage of goods is acutely felt, the main task is to manufacture them. In a society where the goods produced outnumber, what the population can consume, and competition level is high enough, the problem of sales becomes central. The consumer takes the central place; he is literally being hunted for by foisting, convincing, forcing to buy the goods of the given trade mark. The new understanding of consumption changes the traditional approach to economics. Consumption is not considered as a process of satisfying basic human wants any more, but as a new socially-caused process instead, which has its sources in the culture of the whole nation or generation.
Presence of sufficient variation among the genotypes was evident from the analysis of variance. P... more Presence of sufficient variation among the genotypes was evident from the analysis of variance. Prevalence of additive as well as non- additive gene action was indicated, for all the characters, by the analysis of variance for combining ability. Bahadur and Teke were found to be the best general combiners with respect to grain yield per plant. These two parents were good general combiners for atleast four other desirable traits also. In the present study good x good combiners like Teke x Bahadur and Teke x Ranjit and good x poor combiners like Malong x Bahadur, Mehuru x Ranjit, Mehuru x Bahadur and Teke x Piolee were among the best specific combiners.
Genetic variability, correlation and path coefficient analysis was studied in thirteen tomato (Ly... more Genetic variability, correlation and path coefficient analysis was studied in thirteen tomato (Lycopersicon esculentum Mill.) genotypes for yield and its attributing characters. The analysis of variance revealed significant differences among the genotypes for all the characters studied indicating a high degree of variability in the material. The highest PCV and GCV were recorded for number of fruits, yield/plant, fresh weight, vitamin C and number of branches indicating presence of ample variation for these traits in the present material. In the present study, high estimates of heritability and genetic advance as per cent of mean were obtained for fresh weight and fruit diameter. Thus, selection of these traits is likely to accumulate more additive genes leading to further improvement of their performance and these traits may be used as selection criteria in tomato breeding program. The yield/ha exhibited significant positive correlation with plant height, number of branches, number...
Annals of Horticulture, 2014
Experiment was conducted during 2011–2012 at the Experimental Farm of School of Agricultural Scie... more Experiment was conducted during 2011–2012 at the Experimental Farm of School of Agricultural Sciences and Rural Development, Medziphema Campus, Nagaland University to evaluate the performance of fenugreek genotypes under foothill condition of Nagaland. Seven genotypes viz., RMT-1, RMT-305, AFG-2, AFG-3, AFG-4, AM-317 and Hisar Sonali were evaluated for their growth, seed yield and quality characters in the experiment. The experiment was laid out in randomized block design with three replications. Results revealed that all the genotypes exhibited significant variation in their performance in term of growth, yield and quality characters. Among the genotypes, RMT-1 recorded maximum plant height (46.27 cm), number of branches plan−1 (5.59) and number of leaves plan−1 (59.81), length of pods (11.40 cm), number of pods plant−1 (16.13), number of seeds pod−1 (16.27), test weight (20.33 g), seed yield plant−1 (8.69 g) and seed yield hectare−1 (19.32 q). Whereas protein content in seed was r...
International journal of Bio-resource and Stress Management, 2010
Component analysis indicated importance of both additive and dominance gene action for the charac... more Component analysis indicated importance of both additive and dominance gene action for the characters days to 50% flowering, 50% flowering to maturity, plant height, panicle length, grain filling percentage and length-breadth ratio, while only the dominance component was important for the characters like effective tillers per plant, panicle weight, grains panicle−1, 1000 grains weight and yield plant−1. Dominant genes were more frequent in the parents than the recessive genes for the characters days to 50% flowering, 50% flowering to maturity, plant height, panicle length and length-breadth ratio. Unequal gene frequencies for positive and negative alleles in the parents were observed for all the characters except grains panicle−1 for which equal gene frequencies were evident. The estimates of degree of dominance were more than unity for all the characters including yield plant−1, which indicated prevalence of over-dominance.
International Journal of Current Microbiology and Applied Sciences, 2017
International Journal of Agriculture Innovations and Research, 2013
An experiment was laid out in randomized block design with three replications during kharif, 2015... more An experiment was laid out in randomized block design with three replications during kharif, 2015 at the experimental farm of School of Agricultural Sciences and Rural Development, Medziphema campus, Nagaland University to study character association and path analysis among twelve genotypes of soybean under foot hill condition of Nagaland. Studies were done on nine characters viz., days to 50 percent flowering, plant height, number of primary branches, number of secondary branches, number of pods per plant, number of seeds per pod, days to 80 percent maturity, 100 seed weight and seed yield per plant. At genotypic level seed yield showed strong positive correlation with days to 50% flowering, number of pods per plant, number of secondary branches per plant, number of primary branches per plant and plant height. In general, magnitude of genotypic correlation was higher than the phenotypic correlation. This suggested a strong genetic association between the traits and the phenotypic expression was suppressed due to environmental influence. The Path analysis showed that number of pods per plant has the highest positive direct effect followed by plant height at genotypic level. Thus, direct selection for number of pods per plant and plant height would likely be effective in increasing yield.
Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental o... more Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental open field condition of Genetics and Plant Breeding Department NU: SASRD for various genetic parameters, under Randomized Block Design. Fruit yield per plant was found to be positively and significantly correlated with days to first flowering, fruit length, fruit width, fresh fruit weight and dry fruit weight. Study revealed that fresh fruit weight contributed maximum positive direct effect on fruit yield per plant followed by plant height and 1000 seed weight. Fresh fruit weight exerted positive direct effect and also exhibited significant positive correlation with yield indicating a true relationship between the traits.
![Research paper thumbnail of Genetic Diversity Studies in Soybean [Glycine max (L.)Merrill] Genotypes](https://attachments.academia-assets.com/63834256/thumbnails/1.jpg)
](Genetic diversity among 20 soybean genotypes was worked out using Mahalanobis D 2 statistic. On t... more Genetic diversity among 20 soybean genotypes was worked out using Mahalanobis D 2 statistic. On the basis of genetic distance, the twenty genotypes were grouped into 5 clusters. Out of the 20 genotypes cluster II has the highest genotypes (9) followed by cluster III (4), cluster I and cluster IV (3 each) and cluster V had 1 genotype. The inter cluster divergence was observed to be highest between Cluster I and Cluster IV indicating that these two clusters were genetically diverse. Hence, the genotypes of Cluster I and Cluster IV could be utilized in hybridization program to achieve greater variability in the segregating generations. Among the different characters studied test weight followed by plant height, number of pods per plant and days to 50% flowering contributed maximum towards divergence.
![Research paper thumbnail of Ricebean [Vigna umbellata (Thunb.) Ohwi and Ohashi] landraces of Nagaland in Different Environments](https://attachments.academia-assets.com/63834220/thumbnails/1.jpg)
](in a plot size of 3m x 1m with 1m row-to-row spacing and 50cm plant to plant spacing. Observation... more in a plot size of 3m x 1m with 1m row-to-row spacing and 50cm plant to plant spacing. Observations were recorded on five randomly selected plants from each genotype in all the three replications for days to 50% flowering, primary branches, pods per cluster, number of pods per plant, pod length, number of seeds per pod, plant height,80% maturity, 100 seed weight and seed yield per plant. The data were statistically analyzed and the genotypes were assessed for their stability of performance across environments following the method [3]. This method was followed to estimate the three parameters of stability namely mean, regression coefficient (bi) and mean squared deviation (s2di) for each genotype, using SPAR-2 (Statistical Abstract: Stability of yield and its attributes were assessed for 13 landraces genotypes of Rice bean over six environments during Kharif season 2016 and 2017, on six different growing seasons, to determine the quantitative responses of different Rice bean genotypes at six different environments. The combined analysis of variance revealed highly significant differences among Genotypes (G), Environment (E) and interactions of Genotypes and environments(G x E) for most of the studied traits. The joined regression analyses of variances due to environment (linear) were highly significant for characters like Days to 50% flowering, number of pods per plant, 80%maturity, 100 seed weight and seed yield per plant under study, which indicated the genetic control of response to the environment. The variance due to GxE (linear) was significantly different for 50% flowering, pod length, number of seeds per pod and 100 seed weight and non-significant for days to primary branches, pods per cluster, number of pods per plant, plant height, number of primary branches per plant, number of pods per plant, number of seeds per pod, 80% maturity and seed yield per plant. It indicated the differential response of varieties to various growing season. Varieties RbnG3, RbnG5, RbnG8, RbnG9 and RbnG12 showed higher seed yield, regression coefficient equivalent to unity and deviation from regression equivalent to zero. It indicated that these varieties were suitable for cultivation on a wide range of environments as these had greater stability along with high yield.
Indian journal of agricultural biochemistry/Indian Journal of Agricultural Biochemistry, 2024
Journal of agriculture and ecology research international, Apr 2, 2024
The Pharma Innovation Journal, 2020
The nature and magnitude of genetic divergence were assessed in 16 sesame genotypes. Based on the... more The nature and magnitude of genetic divergence were assessed in 16 sesame genotypes. Based on the relative magnitude of D2 values all the 16 genotypes were grouped in to 5 different clusters. Cluster I had 12 genotypes while remaining clusters II, III, IV and V had one genotype each. The average inter cluster distance was found to be highest between cluster III and IV (79.94) followed by cluster III and V (63.87) and cluster IV and V (62.64) whereas the lowest inter cluster distance was observed between cluster I and II (29.21). The higher inter cluster distance indicated the presence of more diversity among the genotypes included in these clusters. Thus the genotypes of cluster III and IV could be utilized as potential parents and crossing between these genotypes would result in heterotic expression for yield component traits. The relative contribution of different plant characters to the total genetic divergence estimated by D2 analysis indicated that capsule length contributed th...
Journal of Pharmacognosy and Phytochemistry, 2019
The study was carried out to estimate different genetic parameters in rice bean landraces of Naga... more The study was carried out to estimate different genetic parameters in rice bean landraces of Nagaland. Thirteen genotypes of rice bean were evaluated for yield and its components in the cropping seasons of 2016-2017 across six environments represented by different sowing dates. In each cropping season the genotypes were arranged in Randomized Block Design (RBD) with three sowing dates. The study revealed that phenotypic coefficient variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the traits in all the six environments. High PCV and GCV was observed for number of pods per plant, number of seeds per pod, plant height,100 seed weight and seed yield/plant, indicating the role of these characters for effective selection. The study also revealed that heritability in broad sense was high for days to flowering, pod length, number of pods per plant, number of seeds per pod, plant height, 80% maturity and100 seed weight indicating that the variation observed was mostly under genetic control and less influenced by environment. Overall high to moderate heritability with high genetic advance was observed for pod length, number of seeds per pod and 100 seed weight indicating additive gene control of these traits across the six environments and thus there is better scope for improvement of these traits through direct selection. On the basis of mean performance of all the genotypes, RbnG1, RbnG3, RbnG4, Rbng5, RbnG8, RbnG10 and RbnG13 was found promising among all the genotypes. The genotype RbnG8 was observed to be earliest genotype among all the genotypes studied. The best environment studied was Env4 and Env6.
Indian Research Journal Of Genetics and Biotechnology, May 25, 2014
Journal of Pharmacognosy and Phytochemistry, 2019
Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental o... more Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental open field condition of Genetics and Plant Breeding Department NU: SASRD for various genetic parameters, under Randomized Block Design. Fruit yield per plant was found to be positively and significantly correlated with days to first flowering, fruit length, fruit width, fresh fruit weight and dry fruit weight. Study revealed that fresh fruit weight contributed maximum positive direct effect on fruit yield per plant followed by plant height and 1000 seed weight. Fresh fruit weight exerted positive direct effect and also exhibited significant positive correlation with yield indicating a true relationship between the traits.
Perilla is an underutilized crop which comes under the category of minor oil seed crop. A field e... more Perilla is an underutilized crop which comes under the category of minor oil seed crop. A field experiment was conducted during the Kharif season (April-November) of the year 2016 at the experimental farm of Genetics and Plant Breeding under School of Agricultural Sciences and Rural Development (SASRD), Medziphema, Nagaland to study the nature and magnitude of genetic divergence in 15 Perilla genotypes and observations on 13 traits were recorded. Analysis of variance revealed significant differences among the different genotypes for all the traits under study. Based on relative magnitude of D 2 values 15 genotypes were grouped into six clusters. Cluster IV had highest landraces (4) followed by Cluster I (3) and the remaining clusters with two landraces each. Maximum genetic divergence was observed between Cluster V and Cluster VI and minimum genetic divergence was observed between Cluster I and Cluster II. Hence, the genotypes of cluster V and cluster VI could be utilized in hybridization program to achieve greater variability in the segregating generations. The analysis revealed maximum contribution of seed yield per plant followed by test weight, oil content and length of main inflorescence towards genetic divergence.
Journal of Pharmacognosy and Phytochemistry, 2020
The analysis of variance revealed significant differences among genotypes indicating high degree ... more The analysis of variance revealed significant differences among genotypes indicating high degree of variability in the material taken into account for the investigation. Highest PCV and GCV were recorded for no of capsules per plant, seed yield and test weight and no of primary branches indicating the presence of ample variations for these traits. High estimates of heritability with genetic advance was accounted for 50% flowering, no of primary branches, no of capsules per plant, test weight, oil content and seed yield. Therefore, selection of these traits is likely to accumulate more additive genes leading to further improvements of their performance and these traits maybe used as selection criteria in sesame breeding programme. For seed yield significant positive correlation were observed between, no of primary branches, no of capsules per plant, test weight and oil content indicating relative utility of these traits for selection. Path coefficient analysis revealed that test weig...
Environment and Ecology, 2010
В обществе, где остро ощущается нехватка товаров, главной задачей является их производство. В общ... more В обществе, где остро ощущается нехватка товаров, главной задачей является их производство. В обществе, где товаров производится намного больше, чем население может их потребить, а уровень конкуренции достаточно высок, проблема сбыта становится центральной. Потребитель занимает центральное место, за ним начинают в буквальном смысле слова охотиться, навязывая, убеждая, заставляя купить товар именно этой торговой марки. На смену традиционному подходу к экономике приходит новое понимание потребления. Потребление рассматривается уже не как процесс удовлетворения базисных человеческих потребностей, а новый социально-обусловленный процесс, который имеет свои истоки в культуре целого народа, поколения. Ключевые слова: поведенческая экономика, маркетинг, поведение потребителей, лояльность, доверие. In a society where shortage of goods is acutely felt, the main task is to manufacture them. In a society where the goods produced outnumber, what the population can consume, and competition level is high enough, the problem of sales becomes central. The consumer takes the central place; he is literally being hunted for by foisting, convincing, forcing to buy the goods of the given trade mark. The new understanding of consumption changes the traditional approach to economics. Consumption is not considered as a process of satisfying basic human wants any more, but as a new socially-caused process instead, which has its sources in the culture of the whole nation or generation.
Presence of sufficient variation among the genotypes was evident from the analysis of variance. P... more Presence of sufficient variation among the genotypes was evident from the analysis of variance. Prevalence of additive as well as non- additive gene action was indicated, for all the characters, by the analysis of variance for combining ability. Bahadur and Teke were found to be the best general combiners with respect to grain yield per plant. These two parents were good general combiners for atleast four other desirable traits also. In the present study good x good combiners like Teke x Bahadur and Teke x Ranjit and good x poor combiners like Malong x Bahadur, Mehuru x Ranjit, Mehuru x Bahadur and Teke x Piolee were among the best specific combiners.
Genetic variability, correlation and path coefficient analysis was studied in thirteen tomato (Ly... more Genetic variability, correlation and path coefficient analysis was studied in thirteen tomato (Lycopersicon esculentum Mill.) genotypes for yield and its attributing characters. The analysis of variance revealed significant differences among the genotypes for all the characters studied indicating a high degree of variability in the material. The highest PCV and GCV were recorded for number of fruits, yield/plant, fresh weight, vitamin C and number of branches indicating presence of ample variation for these traits in the present material. In the present study, high estimates of heritability and genetic advance as per cent of mean were obtained for fresh weight and fruit diameter. Thus, selection of these traits is likely to accumulate more additive genes leading to further improvement of their performance and these traits may be used as selection criteria in tomato breeding program. The yield/ha exhibited significant positive correlation with plant height, number of branches, number...
Annals of Horticulture, 2014
Experiment was conducted during 2011–2012 at the Experimental Farm of School of Agricultural Scie... more Experiment was conducted during 2011–2012 at the Experimental Farm of School of Agricultural Sciences and Rural Development, Medziphema Campus, Nagaland University to evaluate the performance of fenugreek genotypes under foothill condition of Nagaland. Seven genotypes viz., RMT-1, RMT-305, AFG-2, AFG-3, AFG-4, AM-317 and Hisar Sonali were evaluated for their growth, seed yield and quality characters in the experiment. The experiment was laid out in randomized block design with three replications. Results revealed that all the genotypes exhibited significant variation in their performance in term of growth, yield and quality characters. Among the genotypes, RMT-1 recorded maximum plant height (46.27 cm), number of branches plan−1 (5.59) and number of leaves plan−1 (59.81), length of pods (11.40 cm), number of pods plant−1 (16.13), number of seeds pod−1 (16.27), test weight (20.33 g), seed yield plant−1 (8.69 g) and seed yield hectare−1 (19.32 q). Whereas protein content in seed was r...
International journal of Bio-resource and Stress Management, 2010
Component analysis indicated importance of both additive and dominance gene action for the charac... more Component analysis indicated importance of both additive and dominance gene action for the characters days to 50% flowering, 50% flowering to maturity, plant height, panicle length, grain filling percentage and length-breadth ratio, while only the dominance component was important for the characters like effective tillers per plant, panicle weight, grains panicle−1, 1000 grains weight and yield plant−1. Dominant genes were more frequent in the parents than the recessive genes for the characters days to 50% flowering, 50% flowering to maturity, plant height, panicle length and length-breadth ratio. Unequal gene frequencies for positive and negative alleles in the parents were observed for all the characters except grains panicle−1 for which equal gene frequencies were evident. The estimates of degree of dominance were more than unity for all the characters including yield plant−1, which indicated prevalence of over-dominance.
International Journal of Current Microbiology and Applied Sciences, 2017
International Journal of Agriculture Innovations and Research, 2013
An experiment was laid out in randomized block design with three replications during kharif, 2015... more An experiment was laid out in randomized block design with three replications during kharif, 2015 at the experimental farm of School of Agricultural Sciences and Rural Development, Medziphema campus, Nagaland University to study character association and path analysis among twelve genotypes of soybean under foot hill condition of Nagaland. Studies were done on nine characters viz., days to 50 percent flowering, plant height, number of primary branches, number of secondary branches, number of pods per plant, number of seeds per pod, days to 80 percent maturity, 100 seed weight and seed yield per plant. At genotypic level seed yield showed strong positive correlation with days to 50% flowering, number of pods per plant, number of secondary branches per plant, number of primary branches per plant and plant height. In general, magnitude of genotypic correlation was higher than the phenotypic correlation. This suggested a strong genetic association between the traits and the phenotypic expression was suppressed due to environmental influence. The Path analysis showed that number of pods per plant has the highest positive direct effect followed by plant height at genotypic level. Thus, direct selection for number of pods per plant and plant height would likely be effective in increasing yield.
Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental o... more Eight landraces of Naga King Chilli (Capsicum chinense Jacq.) were evaluated under experimental open field condition of Genetics and Plant Breeding Department NU: SASRD for various genetic parameters, under Randomized Block Design. Fruit yield per plant was found to be positively and significantly correlated with days to first flowering, fruit length, fruit width, fresh fruit weight and dry fruit weight. Study revealed that fresh fruit weight contributed maximum positive direct effect on fruit yield per plant followed by plant height and 1000 seed weight. Fresh fruit weight exerted positive direct effect and also exhibited significant positive correlation with yield indicating a true relationship between the traits.
Genetic diversity among 20 soybean genotypes was worked out using Mahalanobis D 2 statistic. On t... more Genetic diversity among 20 soybean genotypes was worked out using Mahalanobis D 2 statistic. On the basis of genetic distance, the twenty genotypes were grouped into 5 clusters. Out of the 20 genotypes cluster II has the highest genotypes (9) followed by cluster III (4), cluster I and cluster IV (3 each) and cluster V had 1 genotype. The inter cluster divergence was observed to be highest between Cluster I and Cluster IV indicating that these two clusters were genetically diverse. Hence, the genotypes of Cluster I and Cluster IV could be utilized in hybridization program to achieve greater variability in the segregating generations. Among the different characters studied test weight followed by plant height, number of pods per plant and days to 50% flowering contributed maximum towards divergence.
in a plot size of 3m x 1m with 1m row-to-row spacing and 50cm plant to plant spacing. Observation... more in a plot size of 3m x 1m with 1m row-to-row spacing and 50cm plant to plant spacing. Observations were recorded on five randomly selected plants from each genotype in all the three replications for days to 50% flowering, primary branches, pods per cluster, number of pods per plant, pod length, number of seeds per pod, plant height,80% maturity, 100 seed weight and seed yield per plant. The data were statistically analyzed and the genotypes were assessed for their stability of performance across environments following the method [3]. This method was followed to estimate the three parameters of stability namely mean, regression coefficient (bi) and mean squared deviation (s2di) for each genotype, using SPAR-2 (Statistical Abstract: Stability of yield and its attributes were assessed for 13 landraces genotypes of Rice bean over six environments during Kharif season 2016 and 2017, on six different growing seasons, to determine the quantitative responses of different Rice bean genotypes at six different environments. The combined analysis of variance revealed highly significant differences among Genotypes (G), Environment (E) and interactions of Genotypes and environments(G x E) for most of the studied traits. The joined regression analyses of variances due to environment (linear) were highly significant for characters like Days to 50% flowering, number of pods per plant, 80%maturity, 100 seed weight and seed yield per plant under study, which indicated the genetic control of response to the environment. The variance due to GxE (linear) was significantly different for 50% flowering, pod length, number of seeds per pod and 100 seed weight and non-significant for days to primary branches, pods per cluster, number of pods per plant, plant height, number of primary branches per plant, number of pods per plant, number of seeds per pod, 80% maturity and seed yield per plant. It indicated the differential response of varieties to various growing season. Varieties RbnG3, RbnG5, RbnG8, RbnG9 and RbnG12 showed higher seed yield, regression coefficient equivalent to unity and deviation from regression equivalent to zero. It indicated that these varieties were suitable for cultivation on a wide range of environments as these had greater stability along with high yield.