Genetic Variability and Correlation Analysis in Indian Mustard [<i>Brassica juncea</i>(L.) Czern &amp; Coss.] under Drought Stress

Meena, Raju Lal; Chauhan, JS; Kk, Singh; Rathore, SS

doi:10.5958/0976-1926.2015.00044.3

Cited by 2 publications

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“…For the most part, the positive relationship among these characteristics suggests the possibility of simultaneously improving these significant yield-contributing characteristics. A similar association in Indian mustard genotypes was also reported by Iqbal et al (2014); Meena et al (2015) and Singh et al (2020). Among the other significant and positive correlations, the days to flower initiation with the days to flower senescence, days to maturity and plant height; the days to flower senescence with the days to maturity and plant height; the days to maturity with the plant height and the plant height with the main raceme length were noticeable.…”

Section: Resultssupporting

confidence: 87%

Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Singh¹,

Singh²,

Singh³

et al. 2023

Czech J. Genet. Plant Breed.

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The present study was conducted to explore the variability generated through recombination breeding for nine economically important traits in Indian mustard (Brassica juncea L. Czern & Coss.). Delineation of the inbred lines to different gene pools, based on genetic diversity, enables their utilisation in hybrid breeding. The unweighted pair group method with arithmetic mean (UPGMA) and a Euclidean distance matrix was used to delineate the inbred lines to clusters. The variability was studied using the range and coefficients of variation of the traits. Significant variability was observed for all studied traits except for oil content and days to maturity. 128 Indian mustard genotypes were grouped into four distinct gene pools based on genetic diversity. A set of 20 most diverse genotype combinations was produced. Promising inbred lines were identified and recommended as donors for the respective trait. The pedigree analysis of the inbred line groups revealed, that recombination breeding caused a large diversity as confirmed by the assignment of inbred lines with the same parentage to specific clusters.

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Section: Resultssupporting

confidence: 87%

Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Singh¹,

Singh²,

Singh³

et al. 2023

Czech J. Genet. Plant Breed.

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“…This implies a high level of genetic variability in both males (testers) and females (lines) parents and their F 1 hybrids, allowing for a more in-depth investigation of genetic variation by combining ability analysis and the measurement of the extent heterosis for these traits. Kaur et al [ 53 ], Meena et al [ 54 , 55 , 56 ], Vaghela et al [ 57 ], Chaudhary et al [ 58 ], and Gupta et al [ 9 ] observed high genetic variability for yield and its component traits in Indian mustard. Godoy et al [ 59 ], Castano et al [ 60 ], Achbani et al [ 61 ], and Grecizes-Besset et al [ 62 ] in sunflower and Ferreira et al [ 63 ] in common bean revealed high genetic variability for resistance/susceptibility to S. sclerotiorum .…”

Section: Discussionmentioning

confidence: 99%

Genetic Analysis for Resistance to Sclerotinia Stem Rot, Yield and Its Component Traits in Indian Mustard [Brassica juncea (L.) Czern & Coss.]

Singh

Avtar

Kumar

et al. 2022

Plants

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Understanding the mode of gene action that controls seed yield and Sclerotinia stem rot resistance in Indian mustard is critical for boosting yield potential. In a line × tester mating design, ten susceptible lines and four resistant testers were used to conduct genetic analysis. The significance of general combining ability (GCA) and specific combining ability (SCA) variances revealed that both additive and non-additive gene actions were involved in the inheritance of Sclerotinia stem rot resistance and yield attributing traits. In addition to 1000-seed weight and number of primary and secondary branches/plant, the genotypes RH 1569 (line) and DRMR 2035 (tester) appeared to be the strongest general combiners for Sclerotinia stem rot resistance. RH 1657 × EC 597317 was the only cross among several that demonstrated a significant desired SCA value for Sclerotinia rot resistance. Regarding SCA effects for yield and component traits, the cross RH 1658 × EC 597328 performed best, with a non-significant but acceptable negative SCA effect for resistance. DRMR 2035, RH 1222-28, RH 1569, RH 1599-41, RH 1657, RH 1658, and EC 597328 are promising genotypes to use as parents in future heterosis breeding and for obtaining populations with high yield potential and greater resistance to Sclerotinia stem rot disease in Indian mustard, based on GCA effects of parents, per se performance, and SCA effects of hybrids. Days to 50% flowering, number of primary branches/plant, main shoot length, and 1000-seed weight all had a high genotypic coefficient of variability (GCV), broad-sense heritability (h2bs), and genetic advance as percent of the mean (GAM) values, as well as significant and desirable correlations and direct effects on seed yield. As a result, these traits have been recognized as the most critical selection criterion for Indian mustard breeding programs.

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Genetic Variability and Correlation Analysis in Indian Mustard [Brassica juncea(L.) Czern & Coss.] under Drought Stress

Cited by 2 publications

References 0 publications

Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Genetic Analysis for Resistance to Sclerotinia Stem Rot, Yield and Its Component Traits in Indian Mustard [Brassica juncea (L.) Czern & Coss.]

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