油菜雄性不育的利用,以前都是研究三系配套,并已取得一定成绩。如白菜型油菜,四川农科院的三天A已实现了三系配套;甘兰型油菜,湖南农科院的湘矮A也初步达到三系配套。但甘兰型油菜是异源四倍体,遗传基础非常复杂,故由它产生出来的雄性不育的类型也是多种多样的,育性的表现更是千差万别。要使所有的雄性不育类型都按照三系配套的形式才能利用,看来也不尽符合客观实际。如宜三A、川七A这种雄性不育类型,我们经过五年七代的研究,觉得要使它实现三系全配套是很困难的,特别是保持系很难找,故不育系的保持和稳定很困难。其他单位的研究也遇到同样的问题。为了使 The use of male sterility of rapeseed was previously studied in three lines and has achieved some success. Such as cabbage rape, Sichuan Academy of Agricultural Sciences for three days has achieved a three-A supporting; Brassica napus, hunan Academy of Agricultural Sciences Xiang short A also reached the initial three-line package. However, Brassica napus is allotetraploid and its genetic basis is very complicated. Therefore, the type of male sterility produced by it is also diverse, and the performance of fertility is even more varied. To make all types of male sterility in accordance with the form of three-line support can be used, it seems not always in line with the objective reality. Such as the three A, Sichuan seven A male sterile type, we have after five years of seven generations of research, that it is difficult to achieve full support of the three lines, in particular, to maintain the Department is difficult to find, so sterile lines It is difficult to maintain and stabilize. Other units of the study also encountered the same problem. because