论文部分内容阅读
近20多年来,国外对苜蓿雄性不育系开展了大量的研究,获得了很大的进展。现就作者所能收集到的资料,将国外对苜蓿细胞质雄性不育系研究和利用的概况综述如下: 1958年,加拿大学者首先发现了苜蓿雄性不育系植株,加拿大农业部给此不育系植株命名为20DRC。但20DRC不是细胞质遗传的雄性不育系,也未找到保持系,不能用种子进行繁殖,只能用无性繁殖的办法进行繁殖和保存。用20DRC不育系,要在生产上大面积制种是有困难的。
In the recent 20 years, lots of researches on alfalfa male sterile lines abroad have been carried out and great progress has been made. Now on the author can collect the data, the foreign alfalfa cytoplasmic male sterile line research and utilization of the overview is summarized as follows: In 1958, Canadian scholar first discovered alfalfa male sterile line plants, the Canadian Department of Agriculture to this sterile line The plant is named 20DRC. However, 20DRC is not a cytoplasmic male sterile line, also did not find the maintainer line, can not multiply with seeds, can only reproduce and save by asexual reproduction. With 20DRC sterile lines, to produce a large area of seed production is difficult.