Diallel Analysis for Lint Yield per Plant, Lint Index and Staple Length in Upland Cotton

摘要

A half diallel model using Qalandri, Acala-P3, Sarmast, DPL-7340-424 and DPL-25were used to investigate the gene action for lint yield per plant, lint index and staple length. Randomized Complete Block Design with four replications was applied during kharif season of 2004. Qalandri proved to be the best general combiner for Lint yield per plant while DPL-7340-424 for staple length and lint index. Cross Qalandri×Sarmast was the best combination for lint yield per plant and Acala-P3×DPL-7340-424 was best specific combination for staple length and lint index. Lint yield per plant and lint index were controlled by dominant type of gene action while staple length was controlled by recessive genes. Lint index was controlled by one set of genes; staple length was controlled by two whereas lint yield per plant was controlled by three sets of genes. Narrow sense heritability was high for lint yield per plant and staple length but low for lint index.