It is further testified that the genetic basis of popularized short-seasoned cotton cultivars in China is rather narrow and it is essen-sial to find some new germplasms for the development of new cultivars.

• 主要从来自美国的金字棉中选育而成,它再次反映了我国现在推广的短季棉品种遗传基础比较狭窄,亟待发掘新的早熟棉基因资源。