ANALYSIS OF GENOTYPE-ENVIRONMENT INTERACTION IN PEARL MILLET GENERATIONS

Abstract

Six generations (parents, Fl, F2, BCI and BC2) of three crosses, i.e. 78/614 x 77/144, 77/273 x 781705 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 Hisarunderirrigated and at Bawal under rainfed conditions. The performance of the generations of the crosses was better at Hisar than at BawaI. The crosses and their generations showed significant interaction with environment. The least square estimates of the parameters of m, (d), (h), el, (gdl) and (ghl) revealed inadequacy of the additive-dominance model fot plant height, ear length, ear weight, grain and dry fodder yield, indicating the role of genotypeenvironment interaction, epistasis and/or linkage.