Genotype-Environment Interaction and Heritability Estimates For Some Quantitative, Characters in Triticale

The biparental progenies and F2 lines from F2 of a triticale cross were studied for genotype environment interaction and genetic components of variance and heritabilities. Observations were recorded for eight quantitative characters, viz., days to heading, tiller number, plant height, ear length, number of spikelets/spike, number of grains per ear, 100-grain weight and grain yield. It was found that grain yield is highly influenced by g × e interaction in both the generations. The other characters like tiller number and number of grains were also sufficiently influenced by the interaction. The days to heading, plant height, ear length, number of spikelets and seed size were less influenced by change in environments. The two populations, in general, did not differ much in their g × e interaction. The heritability in narrow sense was moderate for plant height, ear length, number of spikelets and seed size under both the environments, whereas it was very low for tiller number, number of grains and grain yied under both the environments.