摘要
现在发现的广亲和品种不是万能的,池桥宏的 S<sub>5</sub><sup>n</sup> 模型由于不能解释籼粳杂交所产生的不育到可育连续分布的复杂现象,因而其局限性。我们根据栽培稻分类进化与起源中的研究结果,认为广亲和基因与地理分布相联系,广亲和品种主要分布在起源演化的中心地区,它们很可能是籼粳没有完全分化,栽培稻进化初级阶段的产物。广亲和酯酶谱的特征是7A10A,7A11A 和7A13A。
The wide compatibility varieties(WCVs)discovered are not flawless.The S-5~n model of Ike- hashi and Araki also has its limitation,because it could not explain the complicated phenomenon of fertility- sterility of cross between indica and japonica.Based on studies on the origin,evolution and taxonomy of culti- vated rice,we suggest wide compatibility is a characteristics realted to geographical locations,for WCVs were distributed mainly in the centers of origin and differentiation of rice.It is very likely that they were evolved from the original Asian cultivated rice during the early stages of evolution,when indica and japonica were not yet completely differentiated from each other.Their Est isozyme markers of WCVs contain 7A10A、7A11A. and 7A13A.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1993年第S3期1-5,共5页
Journal of China Agricultural University
基金
国家自然科学基金
国家教委博士点基金
关键词
水稻
广亲和品种
局限性
rice
wide compatibility varieties(WCVs)
Limitation
