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本研究根据加性─显性与环境互作的遗传模型，分析了陆地棉１０个杂交亲本和２０个Ｆ１五个纤维品质性状的两年试验资料，估算各项遗传方差分量和成对性状间各项遗传效应的相关，预测了不同年份Ｆ２杂种优势的遗传表现。各纤维品质性状主要受加性效应的影响。其中纤维长度、纤维强度和麦克隆值３个性状还受到基因型×环境互作效应的影响。基因型×环境互作效应对纤维整齐度和纤维伸长率两个性状影响均不显著。遗传相关分析表明，杂交后代皮棉产量与纤维长度、纤维整齐度、纤维伸长率和纤维细度间可进行同步改良，皮棉产量与纤维强度同步改良较为困难。杂种早代皮棉产量高的组合其纤维强度也较好。Ｆ２纤维品质性状杂种优势的均值一般较小。此外还分析了组合纤维长度、纤维强度和麦克隆值杂种优势在不同环境中的表现。
Based on the genetic model of additive-dominance and environmental interaction, this study analyzed the two-year experimental data of 10 hybrid cottons and 20 F1 five fiber quality traits of upland cotton, and estimated the genetic variance components and the paired traits The correlation of genetic effects predicted the genetic performance of F2 heterosis in different years. The fiber quality traits are mainly affected by the additive effect. The three traits of fiber length, fiber strength and micronaire were also affected by genotype × environment interaction. Genotype × environment interaction effect on fiber uniformity and fiber elongation of two traits have no significant effect. Genetic correlation analysis showed that the lint yield and fiber length, fiber uniformity, fiber elongation and fiber fineness of hybrids could be improved synchronously, and it was more difficult to simultaneously improve the lint yield and fiber strength. Hybrid early lint yield combination of its fiber strength is better. F2 fiber quality traits heterosis average is generally small. In addition, the performance of combined fiber length, fiber strength and wheat clonal heterosis in different environments were analyzed.