Cause and Effect Relationship for Some Biometric Traits in Bread Wheat
Keywords:
bread wheat, biometric traits, grain yield, correlation coefficient, path coefficient analysis, rainfed wheat cropAbstract
Genotypic and phenotypic correlations and path coefficient analyses were conducted for grain yield and some biometric traits in 25 cross-combinations of bread wheat under the rainfed conditions. Significant positive geno- typic and phenotypic association was observed between grain yield per plant, and the yield components, such as productive tillers per plant, spike-length, spikelets per spike, grains per spike and 1000-grain weight. The path coeffi- cient analysis revealed that the number of grains per spike and 1000-grain weight had the maximum direct effect on grain yield. These traits may be considered as the selection criteria for developing high yielding wheat genotypes for
rainfed areas.