Wnafstu棉花雄性不育系遗传类型研究  

Characterization of Inheritance on Fertility of a New Male-sterile Line Wnafstu of Cotton

作　　者：范万发[1] 邢宏宜[1] 贺道华[1] 杨安民[1] 左田夫[1] 

机构地区：[1]西北农林科技大学农学院棉花所,陕西杨凌712100

出　　处：《棉花学报》2008年第2期137-140,共4页Cotton Science

基　　金：农业部"948"项目[991025(A)]

摘　　要：以中棉所41、陕7359(系)、陕2089(系)、陕2234、陕024(系)5个陆地棉种质和8046-1、8046-2、8046-3三个与不育系具相同遗传背景的可育种质为测试父本,采用连续多代和多父本分别株对株测交,对西北农林科技大学发现的暂定名Wnafstu的雄性不育系进行研究。结果表明,5个陆地棉种质父本与不育系测交后,子代均为100%不育株;3个与不育株具相同遗传背景的可育株分别与不育株测交后,子代有不育和可育株两种类型,分离没有规律。据此认为,该不育系属细胞质雄性不育类型。一般陆地棉种质与其杂交,都可保持其不育性。与其具相同遗传背景的可育种质对不育系育性有恢复功能。提出了对该不育系下一步研究的方向。The male sterile line, temporarily designated as Wnafstu developed by NWSUAF, was characterized through several successive backcrossing（plant to plant）using five accessions of G. hirsutum Cv. CCRI 41, Shaan 7359, Shaan 2089, Shaan 2234 and Shaan 204 as recurrent male parents, and crossed with three male-fertile lines （8046-1,8046-2 and 8046-3） with the same genetic background as Wnafstu. The progenies of Wnafstu backcrossed with five accessions were stable in male sterility with 100K plants; but the F1 population of crosses with 8046 was partially fertile with irregular segregation ratio. It inferred that the male sterility was controlled by cytoplasmic genetic factor（s）.

关 键 词：棉花 Wnafstu胞质不育系 杂种优势 

分 类 号：S562[农业科学—作物学]