小麦及其近缘种间杂交的不亲和性及其F_1籽粒性状研究  

Interspecific Cross-incompatibility between Triticum aestivum and Its Related Species and Their F_1 Kernel Characters

作　　者：陈军营[1] 冯林剑[1] 舒文涛[1] 台国琴[1] 

机构地区：[1]河南农业大学农学院,河南郑州450002

出　　处：《河南农业科学》2006年第12期16-19,共4页Journal of Henan Agricultural Sciences

基　　金：国家转基因植物研究与产业化开发专项(JY03-B-19)

摘　　要：采用人工去雄和授粉的方法研究了普通小麦、硬粒小麦、小黑麦、黑麦间不同杂交组合的结实率及其F1籽粒的形态差异。结果表明:不同亲本间杂交的不亲和性表现在授粉、受精及合子或种子发育的不同阶段,从而导致受精困难或杂种胚过早败育,或形成正常的杂交种子,但籽粒变小,表现为远缘杂交结实率的高低及籽粒形态差别很大。并讨论了远缘杂交的重要性和复杂性,提出了远缘杂交不亲和性分子机理的研究方法。Study on the seed setting and kernel characters of F1 derived from the crosses between Triticum aestivum and its related species such as Triticum durum, Triticale and Secale cereale was carried out by the means of artificial emasculation and pollination. The result showed that the cross-incompatibility between different parents occurred at different stages such as pollination, fertilizing,zygotes and seed development, resulting in fertilizing obstacle, or hybrid abortion at early stage,or forming small seeds in size. The seed setting,kernel shape and size of the hybrids differed significantly. The importance and complexity of distant hybridization were discussed and a method investigating the molecular mechanism of distant cros-incompatibility was presented.

关 键 词：小麦近缘种 远缘杂交 不亲和性 F1籽粒性状 

分 类 号：S512.1[农业科学—作物学]