ANALYSIS OF GENOTYPE - ENVIRONMENT INTERACTION IN PEARL MILLET GENERATIONS

Abstract

Six generations (parents, Ft, F2, BCt and BC:t) of three crosses, i.e. 78/614 X77n44, 77/273 X 78/705 and 77/170 X 78/791 between two inbred lines of pearl millet were studied for estimation ofgene effects. The material was grown at two locations: at Hisar under irrigated and at Bawal under rainfed conditions. The performance of the generations of the crosses was better at Hisar than at Bawal. The crosses and their generations showed significant interaction with environment. The least square estimates of the parameters of m, (d), (h), el, (gdt) and (ghd revealed inadequacy of the additive - dominance model for plant height, ear length, ear weight, grain and dry fodder yield, indicating the role of genotype environment interaction, epistasis and/or linkage.