【摘要】 <正> 植物雄性不育的发现,为作物杂种优势利用开辟了新的更广阔的前景。在小麦方面,目前国内外研究最广泛的提型雄性不育系,其不育性受质核互作控制,但恢复系少,恢复力和配合力也往往不够理想,在应用上还存在不少问题。所以,一些科研工作者正在寻找其他新型小麦不育系,细胞核型的雄性不育是其中之一。更多还原

【Abstract】 The new VE-type male-sterile line of wheat has been selected from the hybrid progenies of a cross between an octoploid of Triticum vulgare-Agropyron elongatum iritergeneric cross and common wheat. This male-sterility is controlled by nuclear genes. Generally, in isolated field, there are about three-forths of male-sterile plants and one-forth of heterozygous fertile plants segregated from the progenies of the male-sterile line. Hence they possess both functions of the male-sterile line and its maintainers,. so that the male-sterile plants can be produced in large amounts by natural crossing among the sister plants of the same line. Before producing hybrid wheat, the male-sterile plants must be selfed in an isolated field, by doing so, we can get a progeny with all of the plants being male-sterile, this progeny is used as the maternal parent for producing hybrid seeds. Almost all of the common wheat varieties possess good restoring ability for the VE-type male-sterile line. The yields of some hybrid wheat combinations are much better than the conventional variety used as check in yield test. The genetic analysis of this VE-type male-sterile line is underway.更多还原