TAILIEUCHUNG - Effective selection criteria for genotype of winged bean based on comparative study of stability and sustainability

Comparative studies on stability parameters and proposed Genotypic selection index for selecting stable genotypes in wingedbean (Psophocarpus tetragonolobus) was carried out according to Eberthart and Russel model with sustainability index model. In stability analysis was carried out on 10 genotypes for seed yield, pod yield, days to flowering, maturity and plant height on 3 year multi location data viz., 2005, 2006 and 2007. The based on linear component (bi), and non-linear response (S 2 di) and high mean performance X , EC038955 and Mysore Local for seed yield; EC178331 for pod yield in favourable environment. While based on sustainability index and best performance, the genotypes EC038955 and NBRI-Sel were found to be stable. The similarly, for 100 seed weight (g) deviation from regression was non-significant for genotypes EC178313. Whereas on the basis of sustainability index, mean performance selection index were found stable. For maturity the genotypes recorded very high sustainability index, which indicated that this character is least influenced by the environmental factor. it could be concluded that the genotypes‘EC038955’, NBRI-Sel were the most suitable variety for all the environments for seed yield and pod yield. Thus, there is ample scope of improvement in yields by use of stable and high yielding genotypes. | Effective selection criteria for genotype of winged bean based on comparative study of stability and sustainability

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