National Bureau of Plant Genetic Resources, Regional Station, Phagli, Shimla 171 004 (Himachal Pradesh).
* Part of Ph.D Thesis of the first author submitted to Kumaon University, Nainital (U. P.).
Forty two varieties of french bean, studied for their phenotypic stability in five environments (i.e., 3 Kharif and 2 spring seasons), indicated presence of significant genotype-environment interactions for all the eleven characters including seed yield. Most of the genotype-environment interactions were attributed to linear component except in case of plant height, numbr of leaves, number of seeds, 100-seed weight, days to flower and days to maturity in which both linear and non-linear components were significant. Keeping in view all the three parameters of adaptability, EC 44624, EC 109975, PLB14-1, EC 43893, and PLB-256 proved to be the best adaptables and cah be utilised in breeding as parents for yield stability in french bean.
Frenchbean, adaptability,joint regression, G x E interaction, genetic stability
