论文部分内容阅读
目前我区高粱“三系”的混杂退化现象比较严重,特别是不育系,严重地影响了高粱产量的提高。因此必须重视和做好“三系”的防杂保纯和提纯复壮工作,不断提高其种性。现简要介绍提纯复壮的一些常用方法。一、不育系和保持系的提纯复壮(一)、混合选择法:在不育系混杂不太严重的情况下,采用这种方法。在不育系繁殖田里,于开花前,根据原系的特征特性,选择典型的不育系和保持系单穗各若干个,套袋隔离,开花时,对套袋的单
At present, the mixed degeneration phenomenon of sorghum “three lines” in our district is serious, especially the sterile lines, seriously affecting the yield increase of sorghum. Therefore, we must attach importance to and do a good job in preventing and curing impurities, purifying and rejuvenating the “three lines” and continuously improve their character. Now briefly introduce some common methods of purification and rejuvenation. First, the sterile line and maintain the Department of purification and rejuvenation (A), mixed selection method: Mixed less sterile line in the case of this method. In sterile breeding field, before flowering, according to the characteristics of the original line, choose a typical sterile line and the maintainer of a single number of each, bagging isolation, flowering, bagging single