Interrelationships between quantitatively inherited plant traits and their direct and indirect effects on grain yield are very important in plant breeding. To generate such information, a field experiment was conducted in 2014 cropping season at Ofla District, Northern Ethiopia. Twenty six bread wheat genotypes were planted in Randomized Complete Block Design with 3 replications. Twelve quantitative traits were subjected to analysis of variance and genetic analyses. There were significant differences (P<0.05) among genotypes for 10 quantitative traits including grain yield which ranged from 2.96 (Digalu) to 6.35 t ha-1(ETBW7888). Grain yield was positively correlated with number of productive tillers, number of kernels per spike and biomass yield. Biomass yield had strong and positive direct effect on grain yield, but number of productive tillers per plant and number of kernels per spike had low direct effect. Positive and strong genotypic and phenotypic indirect effect on grain yield via biomass yield suggested that selection on biomass yield would lead to increment of grain yield directly and selection on number of productive tillers per plant and number of kernels per spike indirectly via biomass yield. As this result is based on one location trial for a year, Confirmation across locations and over years is important.
Keywords: Bread wheat, Correlation, Path Coefficient