Assessing genetic variability, heritability and genetic advance for yield and yield components in common wheat

Özet

The present investigation was carried out to study some genetic diversity parameters i.e. the coefficient of variance, heritability and genetic advance for sixteen traits in common wheat. The trial included ten varieties used as phytogenetic material and parents of F1 individuals, whereas F2 individuals are obtained from self – fertilization of F1. The experimentation was conducted in randomized bloc design (RBD) with four replications. Measurements and data notations focused globally on direct and indirect yield components. Analysis of variance revealed significant differences among genotypes for all considered traits. The study showed wide amount of variability for all studied characters. We recorded high magnitude of both PCV and GCV for all the traits except of number of spikelets, spike length and number of grains in linear meter. Moreover, ECV had feeble values except of number of tillers and fertile tillers per plant and number of grains per plant. High values of broad sense heritability associated with high to medium magnitude of genetic advance as per cent of medium were recorded for all traits provided number of grains per plant and per linear meter.