研究表明，柱头外露种质系与陆地棉亲本的主要差异表现在产量上，而引起差异的主要原因是单株铃数降低造成的，柱头外露种质系纤维长度不低于参试的陆地棉亲本；籽、皮棉产量和单株铃数间相关性极为密切，衣分、铃重和衣指子指间存在复杂的相关性，子指在性状相关中具有桥梁作用，值得深入研究；主成分分析筛选出了１１份综合性较好的材料；２４份亲本在遗传上可分成５个遗传类群，柱头外露种质系间及它们与陆地棉亲本间有较大的遗传差异 The results showed that the main difference between stigma germplasm and G. hirsutum showed that the main difference was caused by the decrease of the number of bolls per plant. The length of stigma exposed germplasm was no less than that of the tested upland cotton The correlation between seed yield, boll weight and intercalary finger interdependence was complex, and the sub-index had a bridge function in trait correlation, which deserved further study. The main component The results showed that there were 11 highly integrated materials in the analysis. 24 parents were genetically divided into 5 genetic groups, and there was a large genetic difference between the germplasm of stigma and their parents.