陆地棉主要产量性状相关及遗传参数分析

对29个陆地棉(Gossypium hirsutum L.)常规品种的主要产量性状进行了简单相关、偏相关、遗传相关及遗传参数分析.结果表明,株铃数、单铃重、表分是影响皮棉产量的三要素,其中株铃数最为重要.陆地棉产量性状受环境变异系数影响较大,皮棉产量易受栽培条件等因素的影响.在选择育种中一定要协调好株铃数、单铃重与表分三者之间的关系,同时也应重视栽培管理.

Interrelation and Genetic Parameters Analysis on the Main Yield Traits of Upland Cotton

Yield traits of 29 conventional varieties of upland cotton(Gossypium hirsutum L.)were studied by simple correlation analysis,partial correlation analysis,genetic correlation analysis and genetic parameters analysis.The results showed that the number of bolls per plant,single boll weight and lint percentage were the 3 elements that affected lint yield among which the number of bolls per plant was the most important one.Cotton yield traits were influenced by the environmental variation coefficients while lint yield was influenced by cultivation conditions.During selection breeding,the relationships among number of bolls per plant,single boll weight and lint percentage should be well coordinated.Meanwhile,the cultivation management should be paid attention to.