Komal Shekhawat - Academia.edu (original) (raw)
Papers by Komal Shekhawat
Journal of Pharmacognosy and Phytochemistry, 2019
In this study, thirty genotypes of lentil (Lens culinaris M.) were evaluated in randomized block ... more In this study, thirty genotypes of lentil (Lens culinaris M.) were evaluated in randomized block design with three replications during 2017-18 in laboratory of Department of Plant Breeding and Genetics, SKN college of agriculture, Jobner to determine genetic variability, heritability and genetic advance for seed and seedling characteristics. Observations were recorded on 100 seed weight, seed volume, true density, bulk density, porosity, water absorption capacity, water absorption index germination, seedling length, seedling fresh weight, seedling dry weight and seedling vigour index. The analysis of variance indicated significant difference among genotypes and considerable variability with respect to all the characters except germination percentage. The highest PCV and GCV expressed as percentage was observed for porosity followed by seed volume, seedling length and seedling vigour index, whereas low for bulk density and water absorption index. The estimates of heritability were high for all the characters ranging from 61.39 to 97.37. The estimate of very high heritability with high genetic advance was observed for seed weight, seed volume, water absorption capacity and seedling dry weight whereas high heritability with low genetic advance was recorded for bulk density.
![Research paper thumbnail of In vitro shoot bud induction in Guggul [Commiphora wightii (Arnott)]](https://attachments.academia-assets.com/120226790/thumbnails/1.jpg)
](Shoot apex and nodal segment explants of guggul were placed on Murashige and Skoog Medium (MS med... more Shoot apex and nodal segment explants of guggul were placed on Murashige and Skoog Medium (MS medium, 1962) supplemented with different concentration of cytokinins and auxins alone or in combination for shoot bud induction. In shoot apex explants maximum shoot bud induction was observed on a medium containing 3.5 mg/l BAP with 90 per cent frequency followed by 4.5 mg/l Kn+1.0 mg/l IAA with 70 per cent frequency. Whereas, maximum shoot bud induction from nodal segment explant was observed on a medium containing 3.0 mg/l BAP with 90 per cent frequency followed by 4.5 mg/l BAP+1.0 mg/l IAA with 70 per cent frequency.
Journal of Pharmacognosy and Phytochemistry, 2018
Leaf, Shoot apex and Nodal segment explant of pomegranate were placed on Murashige and Skoog Medi... more Leaf, Shoot apex and Nodal segment explant of pomegranate were placed on Murashige and Skoog Medium (MS medium, 1962) supplemented with different concentration of cytokinins and auxins for callus induction. Maximum callus induction was observed on a medium containing 1.5 mg/l BAP followed by 1.5 mg/l Kn and IAA in leaf explant with 100 per cent frequency. In shoot apex explants, maximum callus induction was observed on 2.0 mg/l BAP followed by 2.0 mg/l Kn with 100 per cent frequency. Maximum callus induction in Nodal segment was observed on 2.0 mg/l BAP followed by 2.0 mg/l IAA with 100 per cent frequency.
International Journal of Plant and Soil Science, May 11, 2022
Present investigation was carried out to study combining ability effects for grain yield and its ... more Present investigation was carried out to study combining ability effects for grain yield and its component traits in 77 hybrids of pearl millet. From the results of GCA effects, it was revealed that a number of parents namely, ICMA 98222, ICMA 93333, ICMA 30199, ICMA 30201 (female parents), and BIB 481-500, BIB 561-570 and BIB 571-581 (male parents) were found to be good general combiner for grain yield and most of its component characters. On the basis of GCA effects, lines ICMA 98222, ICMA 88004, ICMA 93333, ICMA 30199, ICMA 30201 and testes BIB 571-580, BIB 561-570, BIB 511-520, BIB 481-500, BIB 531-540 were good general combiner for more than nine yield contributing characters. The SCA effects of the crosses namely, ICMA 97111
International journal of chemical studies, 2020
Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regi... more Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regions (SCAR) markers had emerged out as authentic reliable tool for easy authenticity of food adulterants. Spices are most subjected to adulteration and even legal bodies are relying on the test conducted via DNA profiling by SCAR marker. Furthermore, research and studies needs to be conducted for other spices adulterants for care of health issues.
Journal of Agrometeorology, Dec 1, 2012
Brinjal (Solanum melongena L.) is a major solanaceous vegetable crop of India. It contributes abo... more Brinjal (Solanum melongena L.) is a major solanaceous vegetable crop of India. It contributes about 12.47 per cent of the total production of vegetables in India. In Rajasthan, it is grown in all districts in an area of 5738 hectares with 37253 metric tonnes production and productivity of 6.49 metric tonnes per hectare (Anonymous, 2007-08). A heavy infection of Alternaria fruit rot of brinjal caused by A. alternata (Fr.) Keissler was observed in the vicinity of Jobner (Jaipur). In India, the disease Alternaria fruit rot of brinjal was first reported from IARI, New Delhi. This disease is severe and appears regularly, causing heavy losses in fruit yield. The disease appear in two phases, leaf spot and fruit rot. The disease first makes its appearance in young seedling during the rainy season (July-August) which is blighted. They give a cherry appearance and finally die out. In September, it attacks on leaves and then spread to fruits which rot and become unfit for consumption. Lesions of fruits are first observed during February. They start as small (above 1/ 2cm in size), concentric, dark brown and sunken spots. Colour of the lesions become olivaceous dark brown due to spore formation. Several lesions may coalesce and cover the entire surface of the fruit (Kapoor and Hingorani, 1958). Fungus produces muriform conidia and usually formed in chains (Fig. 1 & 2). To find out the role of environmental factors such as temperature, relative humidity and light/darkness on the disease development, in vitro studies were conducted at
International Journal of Chemical Studies, 2020
Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regi... more Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regions (SCAR) markers had emerged out as authentic reliable tool for easy authenticity of food adulterants. Spices are most subjected to adulteration and even legal bodies are relying on the test conducted via DNA profiling by SCAR marker. Furthermore, research and studies needs to be conducted for other spices adulterants for care of health issues.
![Research paper thumbnail of A review on Guggulu [Commiphora wightii (Arn.) Bhand.]: In vitro propagation of critical endangered ayurvedic plant](https://attachments.academia-assets.com/107675603/thumbnails/1.jpg)
](International Journal of Chemical Studies, 2020
Guggulu has been a major component in the ancient Indian Ayurvedic system of medicine. Apart from... more Guggulu has been a major component in the ancient Indian Ayurvedic system of medicine. Apart from its use in the medicinal and aromatic industries by Ayurvedic practitioners, it has been used extensively to treat many types of disorders. Guggulu is a gum or resin that is extracted from the plant Commiphora wightii (Arn.) Buffalo. (Syn. Commiphora mukul hook. Ex. Stocks) or Guggulu tree. Guggulu is a shrubby or small tree that belongs to the Bursaceae family. Guggulu contains volatile oils, gum resin, guggulipids, guggulsterones, guggulsterol, mucolol and other steroids. Guggulu is used extensively in Ayurvedic medicine as astringent, antiseptic , expectorant, aphrodisiac, carmenative, anti-spasmodic, emmenagogue. In Ayurveda, Guggulu is the best of the herbs used for Medorroga and Vata disorders. It is widely used for obesity and is also known as a fat burning agent throughout the world. It helps in lowering the levels of cholesterol and triglycerides. Guggulu is very effective in arthritis, gout and sciatica. It is one of the most important chemicals of Ayurveda. In addition it treats sluggish liver, stimulates libido, nervous diseases, bronchial congestion, cardiovascular and circulatory problems, weak digestion, bruises, boils, pimples, fractures, gynecological problems and various skin diseases. Guggulu is a very important and reliable herb in Ayurvedic medicine. Originally it is used in almost every type of disease due to its amazing healing power. This review is an attempt to describe the pharmacological activities of Guggulu and the variable uses of Guggulu.
![Research paper thumbnail of Stability Analysis for Agro-morphological and Physio-biochemical Traits in Mungbean [Vigna radiata (L.) Wilzeck] under Arid Environment](https://a.academia-assets.com/images/blank-paper.jpg)
](LEGUME RESEARCH - AN INTERNATIONAL JOURNAL
Background: Mungbean is an ancient pulse crop widely cultivated under different agro-ecological s... more Background: Mungbean is an ancient pulse crop widely cultivated under different agro-ecological situations in India. It is the potential source of protein, essential minerals and vitamin-B (vitamin-C in sprouting grains). Pulses offer an alternative for diversification of agricultural system but poor yield renders them poor competitors of cereals, oilseeds and cash crops. So it is necessary to screen and identify phenotypically stable genotypes which could perform more or less uniformly under different conditions. The current study aimed to identify the high potential stable genotype and appropriate sowing time for mungbean cultivation in hot arid zone of Rajasthan. Methods: A field experiment was conducted with 35 mungbean genotypes over four environments created by four different dates of sowing in RBD with three replications at SKRAU, Bikaner during summer-2019 and Kharif-2019 using the model of Eberhart and Russell (1966). Result: Stability parameters revealed that genotype IC-3...
International Journal of Plant & Soil Science
The heterosis breeding strategy is one of the most successful technological approaches for improv... more The heterosis breeding strategy is one of the most successful technological approaches for improving Indian mustard varieties for seed yield quality and quantity, as well as other yield contributing character. The present investigation was undertaken ten genetically diverse parents following diallel mating design excluding reciprocals. The resultant 45 F1s and all the ten parents were evaluated in a randomized complete block design with three replications under three different environments. Data on quantitative characters were recorded and heterosis and heterobeltosis were determined that showed sufficient degree of heterosis and heterobeltiosis for all the attributes. The crosses, RGN-13 x RH-406 was identified for days to 50 per cent flowering, days to maturity, number of secondary branches per plant, number of siliquae per plant, 1000-seed weight, oil content, leaf area index and harvest index and the cross RGN-303 x RGN-229 was identified for days to 50 per cent flowering, days ...
![Research paper thumbnail of Genetic Diversity Studies using D2 Statistics in Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes under Aridity](https://attachments.academia-assets.com/96324766/thumbnails/1.jpg)
](International Journal of Environment and Climate Change
The present study was carried out to estimate the genetic diversity for yield and its contributin... more The present study was carried out to estimate the genetic diversity for yield and its contributing traits in pearl millet (Pennisetum glaucum (L.) R. Br.) Genotypes. The experimental material was consisting of 32 pearl millet released genotypes. The experiment was laid out in Randomized Block Design with three replications during Kharif 2021 under rain fed conditions. The observations were recorded on ten randomly selected plants from each genotype in each replication for nine different quantitative traits. Based on D2 values, 32 genotypes were grouped into 3 clusters. Among 3 clusters, cluster I had more number of genotypes (23) followed by cluster II (6), and cluster III (3). The maximum intra cluster distance was observed in cluster III (12.2). The highest inter cluster distance was observed between cluster III and cluster I (18.29) followed by cluster III and cluster II (16.72), and cluster II and cluster I (14.24).The cluster III (49.96) had significant and higher cluster mean ...
Journal of Pharmacognosy and Phytochemistry, 2019
In this study, thirty genotypes of lentil (Lens culinaris M.) were evaluated in randomized block ... more In this study, thirty genotypes of lentil (Lens culinaris M.) were evaluated in randomized block design with three replications during 2017-18 in laboratory of Department of Plant Breeding and Genetics, SKN college of agriculture, Jobner to determine genetic variability, heritability and genetic advance for seed and seedling characteristics. Observations were recorded on 100 seed weight, seed volume, true density, bulk density, porosity, water absorption capacity, water absorption index germination, seedling length, seedling fresh weight, seedling dry weight and seedling vigour index. The analysis of variance indicated significant difference among genotypes and considerable variability with respect to all the characters except germination percentage. The highest PCV and GCV expressed as percentage was observed for porosity followed by seed volume, seedling length and seedling vigour index, whereas low for bulk density and water absorption index. The estimates of heritability were high for all the characters ranging from 61.39 to 97.37. The estimate of very high heritability with high genetic advance was observed for seed weight, seed volume, water absorption capacity and seedling dry weight whereas high heritability with low genetic advance was recorded for bulk density.
Shoot apex and nodal segment explants of guggul were placed on Murashige and Skoog Medium (MS med... more Shoot apex and nodal segment explants of guggul were placed on Murashige and Skoog Medium (MS medium, 1962) supplemented with different concentration of cytokinins and auxins alone or in combination for shoot bud induction. In shoot apex explants maximum shoot bud induction was observed on a medium containing 3.5 mg/l BAP with 90 per cent frequency followed by 4.5 mg/l Kn+1.0 mg/l IAA with 70 per cent frequency. Whereas, maximum shoot bud induction from nodal segment explant was observed on a medium containing 3.0 mg/l BAP with 90 per cent frequency followed by 4.5 mg/l BAP+1.0 mg/l IAA with 70 per cent frequency.
Journal of Pharmacognosy and Phytochemistry, 2018
Leaf, Shoot apex and Nodal segment explant of pomegranate were placed on Murashige and Skoog Medi... more Leaf, Shoot apex and Nodal segment explant of pomegranate were placed on Murashige and Skoog Medium (MS medium, 1962) supplemented with different concentration of cytokinins and auxins for callus induction. Maximum callus induction was observed on a medium containing 1.5 mg/l BAP followed by 1.5 mg/l Kn and IAA in leaf explant with 100 per cent frequency. In shoot apex explants, maximum callus induction was observed on 2.0 mg/l BAP followed by 2.0 mg/l Kn with 100 per cent frequency. Maximum callus induction in Nodal segment was observed on 2.0 mg/l BAP followed by 2.0 mg/l IAA with 100 per cent frequency.
International Journal of Plant and Soil Science, May 11, 2022
Present investigation was carried out to study combining ability effects for grain yield and its ... more Present investigation was carried out to study combining ability effects for grain yield and its component traits in 77 hybrids of pearl millet. From the results of GCA effects, it was revealed that a number of parents namely, ICMA 98222, ICMA 93333, ICMA 30199, ICMA 30201 (female parents), and BIB 481-500, BIB 561-570 and BIB 571-581 (male parents) were found to be good general combiner for grain yield and most of its component characters. On the basis of GCA effects, lines ICMA 98222, ICMA 88004, ICMA 93333, ICMA 30199, ICMA 30201 and testes BIB 571-580, BIB 561-570, BIB 511-520, BIB 481-500, BIB 531-540 were good general combiner for more than nine yield contributing characters. The SCA effects of the crosses namely, ICMA 97111
International journal of chemical studies, 2020
Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regi... more Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regions (SCAR) markers had emerged out as authentic reliable tool for easy authenticity of food adulterants. Spices are most subjected to adulteration and even legal bodies are relying on the test conducted via DNA profiling by SCAR marker. Furthermore, research and studies needs to be conducted for other spices adulterants for care of health issues.
Journal of Agrometeorology, Dec 1, 2012
Brinjal (Solanum melongena L.) is a major solanaceous vegetable crop of India. It contributes abo... more Brinjal (Solanum melongena L.) is a major solanaceous vegetable crop of India. It contributes about 12.47 per cent of the total production of vegetables in India. In Rajasthan, it is grown in all districts in an area of 5738 hectares with 37253 metric tonnes production and productivity of 6.49 metric tonnes per hectare (Anonymous, 2007-08). A heavy infection of Alternaria fruit rot of brinjal caused by A. alternata (Fr.) Keissler was observed in the vicinity of Jobner (Jaipur). In India, the disease Alternaria fruit rot of brinjal was first reported from IARI, New Delhi. This disease is severe and appears regularly, causing heavy losses in fruit yield. The disease appear in two phases, leaf spot and fruit rot. The disease first makes its appearance in young seedling during the rainy season (July-August) which is blighted. They give a cherry appearance and finally die out. In September, it attacks on leaves and then spread to fruits which rot and become unfit for consumption. Lesions of fruits are first observed during February. They start as small (above 1/ 2cm in size), concentric, dark brown and sunken spots. Colour of the lesions become olivaceous dark brown due to spore formation. Several lesions may coalesce and cover the entire surface of the fruit (Kapoor and Hingorani, 1958). Fungus produces muriform conidia and usually formed in chains (Fig. 1 & 2). To find out the role of environmental factors such as temperature, relative humidity and light/darkness on the disease development, in vitro studies were conducted at
International Journal of Chemical Studies, 2020
Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regi... more Nowadays viewing the present scenario of food adulteration Sequenced Characterized Amplified Regions (SCAR) markers had emerged out as authentic reliable tool for easy authenticity of food adulterants. Spices are most subjected to adulteration and even legal bodies are relying on the test conducted via DNA profiling by SCAR marker. Furthermore, research and studies needs to be conducted for other spices adulterants for care of health issues.
International Journal of Chemical Studies, 2020
Guggulu has been a major component in the ancient Indian Ayurvedic system of medicine. Apart from... more Guggulu has been a major component in the ancient Indian Ayurvedic system of medicine. Apart from its use in the medicinal and aromatic industries by Ayurvedic practitioners, it has been used extensively to treat many types of disorders. Guggulu is a gum or resin that is extracted from the plant Commiphora wightii (Arn.) Buffalo. (Syn. Commiphora mukul hook. Ex. Stocks) or Guggulu tree. Guggulu is a shrubby or small tree that belongs to the Bursaceae family. Guggulu contains volatile oils, gum resin, guggulipids, guggulsterones, guggulsterol, mucolol and other steroids. Guggulu is used extensively in Ayurvedic medicine as astringent, antiseptic , expectorant, aphrodisiac, carmenative, anti-spasmodic, emmenagogue. In Ayurveda, Guggulu is the best of the herbs used for Medorroga and Vata disorders. It is widely used for obesity and is also known as a fat burning agent throughout the world. It helps in lowering the levels of cholesterol and triglycerides. Guggulu is very effective in arthritis, gout and sciatica. It is one of the most important chemicals of Ayurveda. In addition it treats sluggish liver, stimulates libido, nervous diseases, bronchial congestion, cardiovascular and circulatory problems, weak digestion, bruises, boils, pimples, fractures, gynecological problems and various skin diseases. Guggulu is a very important and reliable herb in Ayurvedic medicine. Originally it is used in almost every type of disease due to its amazing healing power. This review is an attempt to describe the pharmacological activities of Guggulu and the variable uses of Guggulu.
LEGUME RESEARCH - AN INTERNATIONAL JOURNAL
Background: Mungbean is an ancient pulse crop widely cultivated under different agro-ecological s... more Background: Mungbean is an ancient pulse crop widely cultivated under different agro-ecological situations in India. It is the potential source of protein, essential minerals and vitamin-B (vitamin-C in sprouting grains). Pulses offer an alternative for diversification of agricultural system but poor yield renders them poor competitors of cereals, oilseeds and cash crops. So it is necessary to screen and identify phenotypically stable genotypes which could perform more or less uniformly under different conditions. The current study aimed to identify the high potential stable genotype and appropriate sowing time for mungbean cultivation in hot arid zone of Rajasthan. Methods: A field experiment was conducted with 35 mungbean genotypes over four environments created by four different dates of sowing in RBD with three replications at SKRAU, Bikaner during summer-2019 and Kharif-2019 using the model of Eberhart and Russell (1966). Result: Stability parameters revealed that genotype IC-3...
International Journal of Plant & Soil Science
The heterosis breeding strategy is one of the most successful technological approaches for improv... more The heterosis breeding strategy is one of the most successful technological approaches for improving Indian mustard varieties for seed yield quality and quantity, as well as other yield contributing character. The present investigation was undertaken ten genetically diverse parents following diallel mating design excluding reciprocals. The resultant 45 F1s and all the ten parents were evaluated in a randomized complete block design with three replications under three different environments. Data on quantitative characters were recorded and heterosis and heterobeltosis were determined that showed sufficient degree of heterosis and heterobeltiosis for all the attributes. The crosses, RGN-13 x RH-406 was identified for days to 50 per cent flowering, days to maturity, number of secondary branches per plant, number of siliquae per plant, 1000-seed weight, oil content, leaf area index and harvest index and the cross RGN-303 x RGN-229 was identified for days to 50 per cent flowering, days ...
International Journal of Environment and Climate Change
The present study was carried out to estimate the genetic diversity for yield and its contributin... more The present study was carried out to estimate the genetic diversity for yield and its contributing traits in pearl millet (Pennisetum glaucum (L.) R. Br.) Genotypes. The experimental material was consisting of 32 pearl millet released genotypes. The experiment was laid out in Randomized Block Design with three replications during Kharif 2021 under rain fed conditions. The observations were recorded on ten randomly selected plants from each genotype in each replication for nine different quantitative traits. Based on D2 values, 32 genotypes were grouped into 3 clusters. Among 3 clusters, cluster I had more number of genotypes (23) followed by cluster II (6), and cluster III (3). The maximum intra cluster distance was observed in cluster III (12.2). The highest inter cluster distance was observed between cluster III and cluster I (18.29) followed by cluster III and cluster II (16.72), and cluster II and cluster I (14.24).The cluster III (49.96) had significant and higher cluster mean ...