Estimating of inheritance of fiber traits in cotton by diallel cross analysis

Abstract

This study was conducted to investigate the genetic parameters, general and specific combining abilities in terms of fiber properties in 10x10 half diallel hybrid cotton populations including 45 F1 hybrids and their 10 parental lines. The experiment was conducted in randomized complete blocks design with three replications at Antakya conditions in 2013 year. According to variance analysis, all characteristics among the genotypes were found significant. According to the results of the genetic parameters, fiber elongation and yellowness were controlled by additive and dominance gene effects; fiber strength, fiber fineness and reflectance degree exhibited additive gene effects and significant dominance variance were detected for fiber length, short fiber ratio and uniformity index. Over dominance effects were found in fiber length, short fiber ratio, uniformity index and fiber elongation, while partial dominance occurred for fiber strength, fiber fineness, yellowness and reflectance degree. General and specific combining abilities were found significant for all characters investigated in the study.

Keywords

• Cotton
• Fiber quality
• Diallel analysis
• Inheritance