Study of correlation and path coefficient analysis for yield attributing traits in selected rils of diverse wheat (Triticum aestivum L.) genotypes for heat tolerance

Abstract

Rising temperature has adversely affected wheat production globally. In this realm we studied various morpho-physiological traits governing heat tolerance using thirty bread wheat RILs developed via crossing LOK-1 x HUW- 468, LOK 1 x HUW 234 and Raj-4014 x PBN-51. Correlation studies reflected that traits like number of tillers per plant, plant height, and chlorophyll content were significantly positive correlated with grain yield per plant, on the other hand, path coefficient analysis revealed that the chlorophyll content (0.362) and tillers per plant (0.222) showed a significant positive correlation with grain yield per plant, whereas significant negative correlation for grain yield was exhibited with relative water loss (-0.392) and canopy temperature (-0.402) at genotypic level.

Estimate of Genotypic and Phenotypic Correlation and Path Coefficients in Bread Wheat (Triticum aestivum L.)

“…Amin et al [18] also supported the direct effect of physiological maturity for grain yield per plant. Similar results were found by Khanal et al [19] for flag leaf width Sapi et al [20], Meena et al [21], Oliveira et al [22], Rohith et al [23], Abo-Elwafa et al [24], Kumar et al [25], Santhoshini et al [26] and Singh et al [27] for number of grain per plant, flag leaf width, physiological maturity and yield per plot. Selection focusing on these traits may result in yield improvement.…”