CLUSTER ANALYSIS, GENOTYPIC AND PHENOTYPIC CORRELATION AMONG YIELD CONTRIBUTING TRAITS IN BREAD WHEAT (Triticum aestivum L.) GERMPLASM
DOI:
https://doi.org/10.17762/ijma.v4i1.55Abstract
Wheat is the worlds second main source of food energy and nutrition. Sixty different genotypes and two bread wheat cultivars i.e. Gomal-08 and Hasham-08 were used in this study. Randomized complete block design (RCBD) with three replications were used. Results showed that Grain yield plant-1 has highly significant positive correlation with days to maturity, number of tillers plant-1, peduncle length, number of grains spike-1 and 1000grains weight, while spikelets spike-1 had significant positive correlation with grain yield plant-1 at both phenotypic and genotypic levels. Significant positive correlation were observed between flag leaf area and grain yield plant-1 at phenotypic level. Grain yield plant-1 showed significant negative correlation with days to 50 % heading and spike density at phenotypic level while the same two parameters had highly significant negative association with grain yield plant-1 at genotypic level. The 60 genotypes were separated into six distinct cluster by keeping 10 as linkage distance. According to this comparison, Cluster-III is important for number of tillers plant-1, plant height, number of spikelets spike-1, grain yield plant-1 and 1000-grain weight because these characters showed their highest value in this cluster. Number of grains spike-1 and spike length showed their highest values in cluster-VI and hence can be preferred for the given parameter. Such study can be helpful in breeding programs for wheat improvement.