Department of Plant Breeding and Genetics, Raja Balwant Singh College, Bichpuri, Agra-283105, India.
*Corresponding author & address: 555, Krishi Kunj, New Delhi - 110012.
1Department of Genetics and Plant Breeding, Banaras Hindu University, Varanasi-221005.
Twenty genotypes of French bean selected on the basis of ecogeographic and genetic divergence were assessed for stability of yield and its components under three nitrogen fertility regimes viz. N1 (80 kg/ha), N2 (120 kg/ha) and N3 (160 kg/ha). Heterogeneity among regression coefficients accounted for a significant portion of the genotype-environment interaction. The environment N3was found to be beneficial for realization of full genetic potential of genotypes. Significant G × E (linear) for all the traits except number of branches per plant, pod length and number of seeds per pod revealed that differences among regression coefficient pertaining to various genotypes on the environmental mean were real. According to stability criteria (high mean performance, b=1 and S2d=0), four genotypes viz. HUR 137, CH 812, IIHR 909 and Arka Komal were found to be desirable and stable for pod yield per plot overthe different fertility environments.
