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【目的】为指导优质陆地棉常规育种提供科学参考。【方法】对63个高品质陆地棉资源(即纤维长度30 mm、以上比强度31 cN/tex以上、马克隆值3.7～4.2)的14个数量性状进行因子分析并聚类,对其纤维品质进行稳定性评价。【结果】前5个公因子的累积贡献率达到90.0%,分别代表籽指、铃重、比强度、铃数、纤维整齐度、纤维细度等陆地棉的主要特征,并根据这63个品种(系)的前5个公因子的得分值,采用离差平方和法将其聚为9类,其中大铃优质、早熟性、高衣分上表现好的分别是Ⅸ、Ⅷ、Ⅵ类。【结论】通过因子分析聚类以及稳定性评价后最终预测出12个较理想的亲本,即贝尔斯诺、Acala1517-77、Acala1517-70、巴州5628、SI2、霍皮卡尔、MO-78-344、117169-6、新陆中9号、巴州6501、长绒67-12和新培育品系。
【Objective】 The aim of this study is to provide scientific reference for the conventional breeding of highland cotton. 【Method】 The 14 quantitative traits of 63 high-quality upland cotton resources (ie, the fiber length of 30 mm, the specific strength above 31 cN / tex and the micronaire value of 3.7 to 4.2) were clustered and clustered. Their fiber quality Stability evaluation was performed. 【Result】 The cumulative contribution rate of the first five common factors reached 90.0%, representing the main characteristics of upland cotton, such as seed index, boll weight, specific intensity, boll number, fiber uniformity and fiber fineness respectively. According to the 63 varieties (Lines) scores of the first five common factors, using the sum of squares method to be clustered into nine categories, including bell high quality, precocious, high clothing points on the good performance are Ⅸ, Ⅷ, Ⅵ . 【Conclusion】 Twelve optimal parents were predicted after factor analysis of clustering and stability evaluation, namely Bersinol, Acala1517-77, Acala1517-70, Bazhou 5628, SI2, Hopikar, MO-78- 344, 117169-6, Xinluzhong 9, Bazhou 6501, Changlu 67-12 and newly cultivated lines.