Department of Plant Breeding, Haryana Agricultural University, Hissar-125 004
*Present address: Regl. Res. Stn., Bawal (M. Garh), 123 501, Haryana, India.
Forty genotypes of wheat including Mexican, Indian wheats and their derivatives, were evaluated with respect to grain yield and its components under three locations. Significant genotype-environment interactions were observed in the material under investigation. For grain yield, both linear and non-linear components of genotype-environment interaction were significant and the prediction of performance across environments appeared to be difficult for this trait. Stability in grain yield appeared to have been imparted by the stability for the yield components. The linear component accounted for most of the genotype-environment interaction in case of yield components. The high yielding strains like ‘HD 1981’, ‘C 306’, ‘Raj 857’, ‘WH 114’ and ‘HD 2009’ were found to be responsive to improved environmental conditions. Out of these ‘C 306’, ‘HD 2009’ and ‘Raj 857’ were stable. The non-linear component of ‘HD 1981’ was significant but it was less than the linear component and so the prediction of performance of these genotypes was still possible.
