Abstract:

The progress of research on transferring elite genes from non-AA genome wild rice into Oryza sativa through interspecific hubridization are in three respects,that is,breeding monosomic alien addition lines(MAALs),constructing introgression lines(ILs)and analyzing the heredity of the characters and mapping the relative genes.There are serious reproductive barriers between the interspecific hybridization of O.sativa with non-AA genome wild rice,which mainly show as incrossability and hybrid sterility.This is the "bottleneck" for transferring elite genes from wild rice to O.sativa.Combining traditional crossing method with biotechniques is a reliable way to overcome the reproductive barriers and to improve the utilizing efficiency of non-AA genome wild rice.

Key words: Oryza sativa, non-AA genome wild rice, interspecific hybridization, monosomic alien addition line, introgression line, gene mapping, reproductive barrier

摘要： 利用种间有性杂交向栽培稻转移非AA组野生稻有利基因的研究在三个方面取得进展，即单体异附加系的培育、渗入系的建立以及有利性状的遗传及基因定位。栽培稻与非AA组野生稻种间杂交存在严重的生殖障碍，表现在不可交配性和杂种不育性两个方面，这是限制非AA组野生稻有利基因转移的“瓶颈”。传统的有性杂交手段和生物技术相结合是克服种间生殖障碍，提高非AA组野生稻有利基因育种利用效率的可行途径。

关键词: 栽培稻, 非AA组野生稻, 种间杂交, 单体异附加系, 渗入系, 基因定位, 生殖障碍