摘要
由普通小麦品种间杂交后代分离出的７６０３Ａ核不育类型，主要由两对独立遗传的显性非等位基因控制。两对基因间存在抑制互作效应，可产生多种持有的育性分离比例。在普通小麦品种中，广泛存在着恢复系和“一次保持系”。人工制造保持系无效。不育株有纯合和杂合两种基因型。纯合型与“一次保持系”杂交，后代可获得１００％的不育株；杂合型与“一次保持系”杂交，后代产生１：１育性分离。
A isolated from the hybrid offsprings among common Wheat culti-vars belongs to nuclear sterile type mainly controlled by two pairs of dominant non-allelegenes of the independent inheritance.There exists the inter inhibiting effect between twopairs of genes,thus,producing the multi-special fertile isolation percentage.In commonwheat cultivars,there are the restoring lines and “temporary maintenance lines”.The ar-tificial maintenance lines are invalid.The sterile plants have two kinds of genes──isozygoty and heterozygote.When isozygoty type was crossed with“the temporary main-tenance line”,a 100%of sterile plants was obtained from the offsprings. When heterozy-gote type was crossed with“the temporary maintenance line”,its generation could pro-duce 1:1 fertile isolations.
出处
《西北农业大学学报》
CSCD
1994年第1期67-73,共7页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
关键词
核不育
显性
基因互作
小麦
nuclear sterile,dominant,gene interaction
