当前在棉花育种工作中,要选育出品质、产量以及抗病、抗逆性能比现有当家品种有较大突破的新品种,必须冲破陆地棉种内遗传规范的局限性,运用远缘杂交及其他新的育种手段,扩大和丰富陆地棉的遗传基础,创造新的遗传类型和开展杂种优势利用。然而棉属种间远缘杂交的不亲和性及后代雌雄性的不育性,是进行棉花远缘杂交育种经常 At present, in the cotton breeding work, breeding new varieties with better quality, yield, disease-resistance and anti-retrogradation performance than current monarch varieties must break through the limitations of the genetic code of upland cotton and use distant hybridization And other new breeding methods to expand and enrich the genetic basis of upland cotton, create new genetic types and exploit heterosis. However, the incompatibility of distant crosses between cotton genus and male and female offspring of offspring is often carried out by cotton distant hybridization breeding