Working as an Assistant Professor at the Department of Genetics and plant Breeding, Institute of Agriculture, Palli Siksha Bhavana, Visva-Bharati, Santiniketan. Research interest on mainly Mutation Breeding.
The agronomic performance of 18 M4 generation mutants of aromatic rice (Oryza sativa L.) was eval... more The agronomic performance of 18 M4 generation mutants of aromatic rice (Oryza sativa L.) was evaluated along with their two mother genotypes, IET 14142 and IET 14143. IET 1412 and IET14143 were developed from Tulaipanja, an aromatic non-basmati rice cultivar, popularly grown in northern parts of West Bengal - an important rice growing province of India. The results indicate that there is a considerable amount of genetic variability among mutants with respect to thirteen quantitative characters. Some of the mutants had a combination of both positive and negative forms of important yield contributing characters. The performance of four mutants (T1m1, T1m6, T2m4 and T2m8) indicated considerable improvement in grain yield over their respective control. The increased grain yield per plant in the above high yielding mutants is primarily due to increase in panicle number per plant, spikelet number per panicle, grain number per panicle and test weight. These mutants need further evaluation ...
Induction of mutation in two aromatic rice genotypes (Pigmented Mutant and IET 13541), which were... more Induction of mutation in two aromatic rice genotypes (Pigmented Mutant and IET 13541), which were developed from Gobindabhog, a short grain aromatic non-basmati rice cultivar of West Bengal, led to isolation of a number of morphologically distinct mutants, retaining the characteristic aroma of mother genotype. Genetic divergence among 18 promising mutant families in M4 generation and their two mother genotypes was assessed on the basis of 11 quantitative characters following Mahalanobis D2 statistics. Mutants and their mother lines were grouped into six clusters, of which two were solitary clusters, each containing mutant form Pigmented Mutant. The remaining four clusters contained mutants from both the mother genotypes. Distribution of the mutants derived from Pigmented Mutant into six clusters, compared with that of four clusters for mutants of IET 13541 is an indication of greater divergence among mutants of Pigmented Mutant. Mutants having prominent effects on flowering time for...
Exploration of heterosis is a strategy for enhancing sunflower yield and productivity. In India, ... more Exploration of heterosis is a strategy for enhancing sunflower yield and productivity. In India, the greatest constraints on sunflower production are stagnant and inconsistent yields. By raising them in a variety of ecological conditions, stable per-se performance with the highest yielding potential sunflower hybrids were selected. Sustainable agriculture requires the use of desirable hybrids with high seed yields and oil content too. By making three distinct crossing sets from 32 sunflower genotypes, 11 cytoplasmic male sterility (CMS), and 21 restorer lines, a total of 124 hybrids were developed (comprising both lines and tester). After extensive field evaluation of all hybrids, only eight superior F1s belonging to all three sets, as well as the three national control hybrids KBSH-53, LSFH-171, and DRSH-1, were selected for stability analysis in four agro-ecological regions of West Bengal, India viz., Nimpith, Baruipur, Bankura, and Berhapore. The genetic stability of several phen...
The aromatic rice represents a smaller but independent rice collection, the quality of which is c... more The aromatic rice represents a smaller but independent rice collection, the quality of which is considered to be highly acceptable. Farmers are interested in growing aromatic rice due to high premium market price. The prime objective of this study was to enhance genetic improvement of aromatic rice. Combining ability analysis (GCA and SCA) and gene action are studied in a set of 7 × 7 half-diallel crosses. Twenty-one hybrids along with their seven parents were assessed in randomized complete block design. Different quantitative characters were used to estimate the magnitude of heterosis. GCA and SCA significance for all traits revealed the importance of both additive and nonadditive genetic components. Several genes determine quantitative traits, with each gene having very little impacts and being easily influenced by environmental factors. Pusa Basmati-1 and Govindobhog were the best combiners among the seven parents. In terms of per se performance, heterosis, and SCA effects on se...
Induction of various types of chlorophyll and morphological mutations by three doses (250, 350 an... more Induction of various types of chlorophyll and morphological mutations by three doses (250, 350 and, 450Gy) of gamma rays in two genotypes, developed from Gobindabhog and Tulaipanja was studied. Segregation of chlorophyll and morphological mutants in M2generation from normal looking M1plants indicated recessive nature of mutations. Frequency of different chlorophyll and morphological mutations was higher in Tulaipanja group. The highest frequency of chlorophyll and morphological mutations was observed in the genotype IET, 14143, developed from Tulaipanja, at, 450Gy. Among different chlorophyll mutations albina was the most predominant group. In general, higher mutagenic effectiveness and mutagenic efficiency were found at, 450Gy. Various morphological mutants like grassy leaf, rolled leaf, striped leaf, and broom stick leaf and several other mutants like sterile, early flowering, late flowering, non-flowering, tall, dwarf, semi-dwarf and high yielding mutants were induced with variab...
Journal of Experimental Biology and Agricultural Sciences, 2020
Non-basmati aromatic rice is very popular for its excellent grain quality with an inbuilt aroma. ... more Non-basmati aromatic rice is very popular for its excellent grain quality with an inbuilt aroma. But these cultivars have been ignored in the mainstream industrial agriculture due to low yielder. It is a serious matter that most of these cultivars are fast disappearing from cultivation in the locality. Therefore, there is an urgent need to improve these cultivars. Mutation breeding is one of the options to improve/rectify of specific traits of these cultivars within a very short period without altering the in-built quality traits viz. aroma. The prime objectives of the experiment were to determine radiation effects and to estimate the optimal dose which was necessary for any mutagenesis-based breeding programme. Popular cultivars namely Badshabhog, Bahadurbhog and Blackjoha were taken for gamma irradiation ranging from 200Gy to 400Gy with an interval of 50Gy and unexposed treatment used as control. The experiment was designed at in vitro and in vivo condition in a randomized block d...
Key messageVariability in traits of 15, diverse 6-year-old candidate plus trees ofJatropha curcas... more Key messageVariability in traits of 15, diverse 6-year-old candidate plus trees ofJatropha curcaswas determined to identify the best gain heritable traits correlating with oil yield forJatrophaimprovement.AbstractStudy was carried out on 15 6-year-old candidate plus trees of Jatropha curcas adapted on semi-arid wasteland with an objective to assess variation in morphological, physiological and oil quality characters. Heritable and non-heritable components of the total variability of the characters were determined by genotypic (GCV) and phenotypic (PCV) co-efficient of variation, heritability and genetic advance (GA) and the best gain traits for Jatropha improvement through selection and breeding were assessed. Further, association among the traits were assessed and germplasm were separated into different clusters. Significant variation was found among the different genotypes for all the characters. The photosynthetic and transpiration rate correlated with oil content, seed and oil yield. The chlorophyll pigments correlated positively with the photosynthetic rate and oil content. The seed oil content varied considerably from 27.68 % (JCN01) to 37.49 % (JCN14) and had high heritability, but it had low PCV and GCV and moderate GA. The oil yield plant−1 had high genetic variability and varied significantly from 0.07 (JCN15) to 0.47 kg plant−1 (JCN09/IC 565733). Though the different fatty acids differed significantly with different germplasm and also had high heritability, they had low PCV, GCV and GA. Seed weight, fruit weight, seed weight fruit−1 and seed yield plant−1 strongly correlated with oil yield and had moderate to high GCV, PCV, coupled with high heritability and GA. Germplasm were separated into four distinct clusters with a maximum inter distance found between cluster II and IV, and minimum between cluster I and III. The study helped to identify the superior germplasm among diverse genotypes of J. curcas that can serve as parents with desirable characters like high oil yield, low stomatal conductance and high water use efficiency for further breeding purposes.
Immediate mutagenic effects of 250Gy, 350Gy and 450Gy gamma rays were studied on four genotypes o... more Immediate mutagenic effects of 250Gy, 350Gy and 450Gy gamma rays were studied on four genotypes of aromatic rice, derived from two popular aromatic landraces of West Bengal, Gobindabhog and Tulaipanja. In general, germination percentage, root length, shoot length, seedling vigour index, plant height, spikelet number per panicle, spikelet fertility (%), grain yield per plant and survival at maturity decreased with increase in dose at variable rate due to negative effect of mutation. Panicle number was increased in all the irradiated population over control, which might be due to stimulatory effect of mutagen. Panicle length remained almost unaffected. The results indicated the differential sensitivity of the genotypes and characters to radiation treatment.
Under the present study, assessment of genetic variability of 60 numbers of rice landraces was ca... more Under the present study, assessment of genetic variability of 60 numbers of rice landraces was carried out under morphological and molecular level for selection of promising drought tolerant genotypes under upland ecosystem of North East India. Predominance of additive gene action on characters like leaf rolling index, root: culm ratio, grain yield and other yield contributing traits like plant height came out as effective parameters for selection of drought stress tolerant landraces. Molecular analysis revealed moderate genetic diversity with average Polymorphic Information Content values of 0.44 across the rice landraces. No specific clustering patterns of landraces against some morphological traits numbers of productive tillers per plant, numbers of filled grains per plant etc were found. This signifies the polygenic nature of the quantitative characters and influence of environment on them. Precise correlation between the morphological performance of the landraces and their clu...
Badshah Bhog is a non basmati aromatic traditional rice cultivar. which is not widely cultivated ... more Badshah Bhog is a non basmati aromatic traditional rice cultivar. which is not widely cultivated due to some unfavourable traits which were relatively high plant height, late maturity and low average yield. By the utilization of gamma ray irradiation in plant breeding attempted to overcome such problems in crops. The objective of this research is to observe and select M2 mutants of Badshah Bhog from gamma ray irradiation and obtain early maturing short stature plants. The research was conducted by Line sowing method. Established experimental plots for every irradiation doses and comparing the treatment result with the control to identify the effect of irradiation on the growth of Badshah Bhog. The result showed that there have been several plants with potential mutant traits supported the positive and negative character of every individual. The irradiated dose of 300 Grays has the shortest maturity duration of 131 days with the highest productive tiller of 6.67 but very low as compa...
International Journal of Current Microbiology and Applied Sciences, 2020
Indian mustard (B. juncea (Linn) Czern and Coss) popularly known as rai, raya or laha is one of t... more Indian mustard (B. juncea (Linn) Czern and Coss) popularly known as rai, raya or laha is one of the most important oil seed crops of the country and it occupies considerably large acerage among the Brassica group of oil seed crops. It is estimated the total production of mustard seed in India about more than 72.82 lakh tones significantly. Rapeseed–mustard group of crops is the major oilseed crop of India. India holds the premier position in rapeseed-mustard economy of the world with 2 nd and 3 rd rank in area and production respectively. Rapeseed-mustard oil is used primarily for edible purposes and is the International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 10 (2020) Journal homepage: http://www.ijcmas.com
Domestication is a long term process and continues today. Crop domestication can be considered a ... more Domestication is a long term process and continues today. Crop domestication can be considered a model system of plant evolution. The origin of cultivated rice is related to complex evolutionary dynamics in rice cultivars and wild progenitors, particularly rapid adaptive differentiation and continuous gene flow within and between cultivated and wild rice. A growing body of phylogenetic evidence suggested that the diverged genetic background of indica and japonica rice cultivars were derived independently from genetically distinct wild populations. Many genes such as sh4, Wx, G1F1 etc contributed to rice domestication process. The wild species of the genus Oryza offered enormous potential to make a significant impact on agricultural productivity. The domestication-selected gene can be used for further crop improvement. Genes for resistance to diseases, insects and abiotic stresses have also been introgressed across crossability barriers from distantly related species into cultivated ...
The agronomic performance of 18 M4 generation mutants of aromatic rice (Oryza sativa L.) was eval... more The agronomic performance of 18 M4 generation mutants of aromatic rice (Oryza sativa L.) was evaluated along with their two mother genotypes, IET 14142 and IET 14143. IET 1412 and IET14143 were developed from Tulaipanja, an aromatic non-basmati rice cultivar, popularly grown in northern parts of West Bengal - an important rice growing province of India. The results indicate that there is a considerable amount of genetic variability among mutants with respect to thirteen quantitative characters. Some of the mutants had a combination of both positive and negative forms of important yield contributing characters. The performance of four mutants (T1m1, T1m6, T2m4 and T2m8) indicated considerable improvement in grain yield over their respective control. The increased grain yield per plant in the above high yielding mutants is primarily due to increase in panicle number per plant, spikelet number per panicle, grain number per panicle and test weight. These mutants need further evaluation ...
Induction of mutation in two aromatic rice genotypes (Pigmented Mutant and IET 13541), which were... more Induction of mutation in two aromatic rice genotypes (Pigmented Mutant and IET 13541), which were developed from Gobindabhog, a short grain aromatic non-basmati rice cultivar of West Bengal, led to isolation of a number of morphologically distinct mutants, retaining the characteristic aroma of mother genotype. Genetic divergence among 18 promising mutant families in M4 generation and their two mother genotypes was assessed on the basis of 11 quantitative characters following Mahalanobis D2 statistics. Mutants and their mother lines were grouped into six clusters, of which two were solitary clusters, each containing mutant form Pigmented Mutant. The remaining four clusters contained mutants from both the mother genotypes. Distribution of the mutants derived from Pigmented Mutant into six clusters, compared with that of four clusters for mutants of IET 13541 is an indication of greater divergence among mutants of Pigmented Mutant. Mutants having prominent effects on flowering time for...
Exploration of heterosis is a strategy for enhancing sunflower yield and productivity. In India, ... more Exploration of heterosis is a strategy for enhancing sunflower yield and productivity. In India, the greatest constraints on sunflower production are stagnant and inconsistent yields. By raising them in a variety of ecological conditions, stable per-se performance with the highest yielding potential sunflower hybrids were selected. Sustainable agriculture requires the use of desirable hybrids with high seed yields and oil content too. By making three distinct crossing sets from 32 sunflower genotypes, 11 cytoplasmic male sterility (CMS), and 21 restorer lines, a total of 124 hybrids were developed (comprising both lines and tester). After extensive field evaluation of all hybrids, only eight superior F1s belonging to all three sets, as well as the three national control hybrids KBSH-53, LSFH-171, and DRSH-1, were selected for stability analysis in four agro-ecological regions of West Bengal, India viz., Nimpith, Baruipur, Bankura, and Berhapore. The genetic stability of several phen...
The aromatic rice represents a smaller but independent rice collection, the quality of which is c... more The aromatic rice represents a smaller but independent rice collection, the quality of which is considered to be highly acceptable. Farmers are interested in growing aromatic rice due to high premium market price. The prime objective of this study was to enhance genetic improvement of aromatic rice. Combining ability analysis (GCA and SCA) and gene action are studied in a set of 7 × 7 half-diallel crosses. Twenty-one hybrids along with their seven parents were assessed in randomized complete block design. Different quantitative characters were used to estimate the magnitude of heterosis. GCA and SCA significance for all traits revealed the importance of both additive and nonadditive genetic components. Several genes determine quantitative traits, with each gene having very little impacts and being easily influenced by environmental factors. Pusa Basmati-1 and Govindobhog were the best combiners among the seven parents. In terms of per se performance, heterosis, and SCA effects on se...
Induction of various types of chlorophyll and morphological mutations by three doses (250, 350 an... more Induction of various types of chlorophyll and morphological mutations by three doses (250, 350 and, 450Gy) of gamma rays in two genotypes, developed from Gobindabhog and Tulaipanja was studied. Segregation of chlorophyll and morphological mutants in M2generation from normal looking M1plants indicated recessive nature of mutations. Frequency of different chlorophyll and morphological mutations was higher in Tulaipanja group. The highest frequency of chlorophyll and morphological mutations was observed in the genotype IET, 14143, developed from Tulaipanja, at, 450Gy. Among different chlorophyll mutations albina was the most predominant group. In general, higher mutagenic effectiveness and mutagenic efficiency were found at, 450Gy. Various morphological mutants like grassy leaf, rolled leaf, striped leaf, and broom stick leaf and several other mutants like sterile, early flowering, late flowering, non-flowering, tall, dwarf, semi-dwarf and high yielding mutants were induced with variab...
Journal of Experimental Biology and Agricultural Sciences, 2020
Non-basmati aromatic rice is very popular for its excellent grain quality with an inbuilt aroma. ... more Non-basmati aromatic rice is very popular for its excellent grain quality with an inbuilt aroma. But these cultivars have been ignored in the mainstream industrial agriculture due to low yielder. It is a serious matter that most of these cultivars are fast disappearing from cultivation in the locality. Therefore, there is an urgent need to improve these cultivars. Mutation breeding is one of the options to improve/rectify of specific traits of these cultivars within a very short period without altering the in-built quality traits viz. aroma. The prime objectives of the experiment were to determine radiation effects and to estimate the optimal dose which was necessary for any mutagenesis-based breeding programme. Popular cultivars namely Badshabhog, Bahadurbhog and Blackjoha were taken for gamma irradiation ranging from 200Gy to 400Gy with an interval of 50Gy and unexposed treatment used as control. The experiment was designed at in vitro and in vivo condition in a randomized block d...
Key messageVariability in traits of 15, diverse 6-year-old candidate plus trees ofJatropha curcas... more Key messageVariability in traits of 15, diverse 6-year-old candidate plus trees ofJatropha curcaswas determined to identify the best gain heritable traits correlating with oil yield forJatrophaimprovement.AbstractStudy was carried out on 15 6-year-old candidate plus trees of Jatropha curcas adapted on semi-arid wasteland with an objective to assess variation in morphological, physiological and oil quality characters. Heritable and non-heritable components of the total variability of the characters were determined by genotypic (GCV) and phenotypic (PCV) co-efficient of variation, heritability and genetic advance (GA) and the best gain traits for Jatropha improvement through selection and breeding were assessed. Further, association among the traits were assessed and germplasm were separated into different clusters. Significant variation was found among the different genotypes for all the characters. The photosynthetic and transpiration rate correlated with oil content, seed and oil yield. The chlorophyll pigments correlated positively with the photosynthetic rate and oil content. The seed oil content varied considerably from 27.68 % (JCN01) to 37.49 % (JCN14) and had high heritability, but it had low PCV and GCV and moderate GA. The oil yield plant−1 had high genetic variability and varied significantly from 0.07 (JCN15) to 0.47 kg plant−1 (JCN09/IC 565733). Though the different fatty acids differed significantly with different germplasm and also had high heritability, they had low PCV, GCV and GA. Seed weight, fruit weight, seed weight fruit−1 and seed yield plant−1 strongly correlated with oil yield and had moderate to high GCV, PCV, coupled with high heritability and GA. Germplasm were separated into four distinct clusters with a maximum inter distance found between cluster II and IV, and minimum between cluster I and III. The study helped to identify the superior germplasm among diverse genotypes of J. curcas that can serve as parents with desirable characters like high oil yield, low stomatal conductance and high water use efficiency for further breeding purposes.
Immediate mutagenic effects of 250Gy, 350Gy and 450Gy gamma rays were studied on four genotypes o... more Immediate mutagenic effects of 250Gy, 350Gy and 450Gy gamma rays were studied on four genotypes of aromatic rice, derived from two popular aromatic landraces of West Bengal, Gobindabhog and Tulaipanja. In general, germination percentage, root length, shoot length, seedling vigour index, plant height, spikelet number per panicle, spikelet fertility (%), grain yield per plant and survival at maturity decreased with increase in dose at variable rate due to negative effect of mutation. Panicle number was increased in all the irradiated population over control, which might be due to stimulatory effect of mutagen. Panicle length remained almost unaffected. The results indicated the differential sensitivity of the genotypes and characters to radiation treatment.
Under the present study, assessment of genetic variability of 60 numbers of rice landraces was ca... more Under the present study, assessment of genetic variability of 60 numbers of rice landraces was carried out under morphological and molecular level for selection of promising drought tolerant genotypes under upland ecosystem of North East India. Predominance of additive gene action on characters like leaf rolling index, root: culm ratio, grain yield and other yield contributing traits like plant height came out as effective parameters for selection of drought stress tolerant landraces. Molecular analysis revealed moderate genetic diversity with average Polymorphic Information Content values of 0.44 across the rice landraces. No specific clustering patterns of landraces against some morphological traits numbers of productive tillers per plant, numbers of filled grains per plant etc were found. This signifies the polygenic nature of the quantitative characters and influence of environment on them. Precise correlation between the morphological performance of the landraces and their clu...
Badshah Bhog is a non basmati aromatic traditional rice cultivar. which is not widely cultivated ... more Badshah Bhog is a non basmati aromatic traditional rice cultivar. which is not widely cultivated due to some unfavourable traits which were relatively high plant height, late maturity and low average yield. By the utilization of gamma ray irradiation in plant breeding attempted to overcome such problems in crops. The objective of this research is to observe and select M2 mutants of Badshah Bhog from gamma ray irradiation and obtain early maturing short stature plants. The research was conducted by Line sowing method. Established experimental plots for every irradiation doses and comparing the treatment result with the control to identify the effect of irradiation on the growth of Badshah Bhog. The result showed that there have been several plants with potential mutant traits supported the positive and negative character of every individual. The irradiated dose of 300 Grays has the shortest maturity duration of 131 days with the highest productive tiller of 6.67 but very low as compa...
International Journal of Current Microbiology and Applied Sciences, 2020
Indian mustard (B. juncea (Linn) Czern and Coss) popularly known as rai, raya or laha is one of t... more Indian mustard (B. juncea (Linn) Czern and Coss) popularly known as rai, raya or laha is one of the most important oil seed crops of the country and it occupies considerably large acerage among the Brassica group of oil seed crops. It is estimated the total production of mustard seed in India about more than 72.82 lakh tones significantly. Rapeseed–mustard group of crops is the major oilseed crop of India. India holds the premier position in rapeseed-mustard economy of the world with 2 nd and 3 rd rank in area and production respectively. Rapeseed-mustard oil is used primarily for edible purposes and is the International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 10 (2020) Journal homepage: http://www.ijcmas.com
Domestication is a long term process and continues today. Crop domestication can be considered a ... more Domestication is a long term process and continues today. Crop domestication can be considered a model system of plant evolution. The origin of cultivated rice is related to complex evolutionary dynamics in rice cultivars and wild progenitors, particularly rapid adaptive differentiation and continuous gene flow within and between cultivated and wild rice. A growing body of phylogenetic evidence suggested that the diverged genetic background of indica and japonica rice cultivars were derived independently from genetically distinct wild populations. Many genes such as sh4, Wx, G1F1 etc contributed to rice domestication process. The wild species of the genus Oryza offered enormous potential to make a significant impact on agricultural productivity. The domestication-selected gene can be used for further crop improvement. Genes for resistance to diseases, insects and abiotic stresses have also been introgressed across crossability barriers from distantly related species into cultivated ...
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Papers by Nihar Ranjan Chakraborty