Genetic studies of durum wheat (Triticum durum L.) genotypes for yield and its attributing traits under restricted irrigation condition

Abstract

Genetic variability, correlation and path analysis was studied for yield and its attributing traits in forty diverse durum wheat genotypes under restricted irrigation conditions in north Gujarat conditions and studied 11 morphological, 3 physiological and 2 biochemical traits which contributes for yield in durum wheat. The analysis of variance revealed that the significance difference among the genotypes for all the studied traits except canopy temperature after 5 days and 15 days of anthesis. Traits viz., grain yield per plot, number of grains per spike, spike length, peduncle length, 1000 grains weight, harvest index and chlorophyll content showed moderate GCV and PCV values. High heritability with high genetic advance recorded in five traits. Under restricted irrigation conditions number of grains per spike, spike length, peduncle length, 1000 grains weight, biological yield per plot was positive correlated with grain yield per plot. Harvest index showed highest direct effect towards the grain yield per plot followed by biological yield per plot and number of grains per spike. For selection of yield contributing traits number of grains per spike, spike length, 1000 grains weight, harvest index and biological yield per plot are important for future breeding strategies.