Genetic Divergence Among Post-rainy Season-Grown Sorghum Local Landraces and Varieties for Morphological and Yield Traits

Badigannavar, A. and Girish, G. and Ganapathi, T.R. (2017) Genetic Divergence Among Post-rainy Season-Grown Sorghum Local Landraces and Varieties for Morphological and Yield Traits. Agricultural Research, 6 (3). pp. 227-234.

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Abstract

Post-rainy season-cultivated sorghum lines are local landraces, known for their grain quality and used exclusively for human consumption. Because of their importance, the present study was undertaken to estimate genetic diversity for morphological and yield-contributing traits at two locations. The ANOVA for days to flower, stem diameter, panicle width, yield per plant and 100 seed weight showed significant differences among 85 sorghum landraces and 15 popular varieties. Mean squares for all the traits were significantly affected by genotypes (G), environments (E) and G 9 E interaction. Relatively high broad-sense heritability was observed for grain yield at BARC, Mumbai (E1), and panicle length at ARS, Gulbarga (E2) locations, respectively. Significant positive correlations between panicle width and grain yield (0.23**) and between seed weight and grain yield (0.22**) were observed. Cluster analysis based on Euclidean distance grouped all the genotypes into five clusters with PC-6 emerging as a distinct variety. Promising landraces identified in this study would serve as genetic resources for recombination breeding.

Item Type: Article
Uncontrolled Keywords: Cluster analysis, Genetic diversity, G 9 E interaction, Genetic correlation, Heritability
Author Affiliation: Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India
Subjects: Plant Production
Crop Improvement > Genetics/Genomics
Divisions: Sorghum
Depositing User: Mr B Krishnamurthy
Date Deposited: 30 Aug 2017 06:21
Last Modified: 30 Aug 2017 06:21
Official URL: http://dx.doi.org/10.1007/s40003-017-0268-4
URI: http://eprints.icrisat.ac.in/id/eprint/14983

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