Analysis of yield components and their association for enhancing grain yield in bread wheat (Triticum aestivum L. em Thell.) under saline-sodicity reclaimed condition

Abstract

Experiment was conducted to assess direction, magnitude of association of different characters and contributionof various traits on yield for 143 wheat genotypes in which grain yield was assumed as dependent character.The variation due to checks was significant for all the character except for peduncle length and plant heightwhile mean squares due to blocks were non-significant for all the characters except plant height and grainyield which indicated that the experimental site was heterogeneous. Highly significant and positive correlationswere exerted in case of biological yield followed by productive tillers per plant, grains per spike, test weight,spike length while significant and positive association was observed for flag leaf area, harvest index and plantheight. Path-coefficient analysis revealed that biological yield has high order of direct positive effect followedby harvest index, test weight, spike length, plant height, Productive tillers plant-1 and flag leaf area while othertraits exhibited very low or negative direct effect on grain yield. The characters identified above can practicedfor obtaining high yielding cultivar.