Stability Analysis for Seed Yield Trait in Indian Mustard (Brassica juncea L. Czern & Coss.)
Ajay Pal Yadav *
Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, India.
Gaibriyal M. Lal
Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, India.
*Author to whom correspondence should be addressed.
Abstract
Present study was undertaken to estimate the magnitude of genotype × environment interaction (GEI) and to identify stability of improved and high-yielding varieties of Indian mustard (Brassica juncea L. Czerns & coss.). The 57 Indian mustard genotypes were evaluated in RBD along with three replications during Rabi crop seasons in three environments. Analysis of variance on 14 traits was carried out individually as well as pooled over environments. Yield stability was analysed employing Eberhart and Russell’s model [1] which revealed highly significant differences among genotypes and environments. Mean squares due to environment + genotype x environment interactions (E + G x E) indicated that genotypes interacted considerably with environmental conditions. Further, partitioning of E+G x E effects indicated that E (linear), G x E (linear) components were highly significant for grain yield. Genotypes RH-749, DRMR 1165-40 X RH-406, DRMR IJ-31 X RH-749 had high mean than general mean coupled with regression coefficient close to unity bi = 1 and S2di = 0 and are identified as most stable and desirable Indian mustard genotypes.
Keywords: Stability, G X E interaction, stability Indian mustard genotypes
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References
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