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本文研究表明 ,彩色杂种棉具有以下优势表现特征 :1 )在植株与棉铃性状方面 ,彩色杂种棉的单铃重、每囊粒数、籽指皆具有比较明显的杂种优势 ;衣分与衣指多具有正向中亲优势 ,但竞争优势皆为负值。 2 )在产量上 ,彩色杂种棉产量多具有明显的杂种优势 ,而皮棉产量多表现负向杂种优势。但通过优选亲本、合理配组 ,仍可以筛选出在皮棉产量上具有优势的组合。另外 ,彩色杂种棉霜前花中亲优势与竞争优势皆为正值 ,表明彩色杂种棉的早熟性的普遍较好。 3)在纤维品质方面 ,彩色杂种棉的纤维长度、纤维比强度具有明显的正向中亲优势 ,但竞争优势取决于配组亲本的品质水平。马克隆值中亲优势的表现没有明显规律 ,但马克隆值的竞争优势皆为负值 ,即与当前推广品种相比 ,彩色杂种棉的马克隆值相对较低 ,纤维相对较细。文章最后建议 ,在亲本选配上最好选择比强度在 2 5cN/tex以上、绒长在 31mm以上的高品质白色棉作为配组的杂交亲本 ,这样容易选育出在品质上具有竞争优势的彩色杂种棉组合
The results of this study show that color hybrid cotton has the following advantages: 1) The color cotton hybrids have more obvious heterosis in the bolls weight, More positive pro-dominant advantage, but the competitive advantage is negative. 2) In terms of yield, the yield of color hybrid cotton had obvious heterosis, while that of lint yield showed negative heterosis. However, by optimizing the parents and rationing the combination, the combination with superiority in lint yield can still be screened out. In addition, the pro-dominant and competitive advantages of the color hybrid cotton frost before the flower are all positive, indicating that the color hybrid cotton is generally better premature. 3) In terms of fiber quality, the fiber length and the specific fiber strength of color hybrid cotton have obvious positive pro-dominant advantages, but the competitive advantages depend on the quality level of the parents. Micronaire value of the pro-dominant performance of no obvious regularity, but the competitive advantage of micronaire values are negative, that is, compared with the current promotion of varieties, color micronaire cotton micronaire value is relatively low, the fiber is relatively thin. Finally, the article suggests that high-quality white cotton with a specific strength of more than 25cN / tex and a cashmere length of 31mm or more should be selected as the best hybrid parent in the parental selection so as to be competitive in quality Color hybrid cotton combination