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通过对陆海BC4F3、BC4F3:4及BC4F3:5(安阳,库尔勒)的3个世代材料纤维产量与品质表型数据的分析结果显示:各群体性状平均表现均与对照中棉所45相近,纤维上半部平均长度和断裂比强度超轮回亲本比例均高于78.00%,铃重、衣分的超轮回亲本比例在22.59%~53.61%之间;相关分析表明4个群体间主要产量性状和纤维品质性状呈极显著正相关。结果表明通过高代回交并自交得到的染色体片段代换系材料遗传背景大部分已得到恢复并且存在丰富的遗传变异,含有大量产量性状较好、纤维品质优异的代换系。本研究为棉花数量性状遗传、基因聚合、基因功能分析等研究储备了大量的基础材料,也为棉花育种提供了优异亲本材料。
The results of fiber yield and quality phenotype data of three generations of landraces BC4F3, BC4F3: 4 and BC4F3: 5 (Anyang, Korla) showed that the average performance of each group of traits was similar to that of control cotton, The proportion of super-reincarnated parents with the average length of the first half and the strength of the first reincarnation was higher than 78.00%, and the percentage of super-reincarnated parents with boll weight and the lint percentage was between 22.59% -53.61%. The correlation analysis showed that the main yield characters and fiber Quality traits were significantly and positively correlated. The results showed that most of the genetic backgrounds of chromosome segment substitution lines obtained through backcrossing and selfing of high generation have been restored and have abundant genetic variation, including a large number of substitution lines with good yield traits and excellent fiber quality. This study reserves a large number of basic materials for cotton quantitative trait inheritance, gene polymerization, gene function analysis and other research, but also provides excellent parental material for cotton breeding.