【摘要】 <正> 一、前言自1948年开始在疏菜上利用自交不亲和系杂种以来,目前国内外十字花科疏菜杂种优势利用的主要途径仍然是自交不亲和系杂种。日本学者治田辰夫(1958)分析了甘兰和大白菜一些品种中一对不亲和基因问的四种遗传类型,进一步推动了自交不亲和性遗传的研究。饲用甘兰型油菜(B.napus·L·)自交不亲和性对自交亲和性通常是显性(Mackay,1976、1977)。在油用甘兰型油菜中,瑞典Olsson(1960),从欧洲油菜(B.napus,L.)分离出自交不亲和后代。在籽用油菜中,要育成隐性的自交不亲和系以及解决剥蕾繁殖自交不亲和系费工较多的问题,是当前国内外对甘兰型自交不亲和系研究的重点问题之一。更多还原

【Abstract】 From the artificial crosses between sevcral self-incompatibe lines andinbred lines, We get the results showing that the self-incompatibility maybe maintained by some self-incompatible lines with each other such as 211and 271, and also by some inbred lines such as Wan-11. So we may producethe three-way hybrids of B. napus from the crosses between such self-in-compatible lines or inbred lines with some strong restoring lines such as75-53 and Yi-1. These experimental results show that such program willbe practiced by futher studies. It may be possible to restrict the use ofthe artificial budding pollination in the minimum cxtent got the propagationof self-incompatible lines, so we may quite easily use the three-way hybridesinstead of original two-way hybrids on the produclion of rapeseed hybrid.更多还原