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1989年3月,我们在油菜甘白种间杂交(81008X托品)F_4代白菜型油菜品系中,发现了雄性不育株。经过两年多的观察研究,其测交和回交后代无育性分离,现有白菜型油菜品仲中存在着保持和恢复基因。初步认为,该不育材料属于核质互作的细胞质不育类型。该不育材料在盛花前总不育率为98.76%,盛花后育性有变化。与波里马不育系高温敏感型相比,其育生变化除高温因素外,对光照长度是否也有一定的诱导作用,或需要一定的积温后才能导致育性发生变化进行了讨论。后期可育株自交和兄妹交结实指数分别为0.044和0.090,低于自交不亲和结实指数1.0的标准,剥蕾自交结实指数也仅5.133。根据其雄性不育和自交不亲和双重性质、作者认为,该不育材料用于配制杂种,纯度可能优于白菜型油菜自交迟钝系和标志性状杂种。
In March 1989, we found a male sterile line in the rapeseed cross between the rapeseed crosses (81008X). After more than two years of observational studies, the testis and backcross progenies were sterilely segregated. The existing genes for the maintenance and recovery of the existing Chinese cabbage rapeseed Zhongyou were present. It is preliminarily believed that the CMS material belongs to the type of cytoplasmic male sterility (CMS). The sterile material before the full flowering of the total sterile rate was 98.76%, full bloom fertility changes. Compared with the high temperature-sensitive type of Polima CMS, its fertility change in addition to high temperature factors, whether the light length is also a certain induction, or require a certain amount of accumulated temperature before it can lead to fertility changes are discussed. The selfing and sibling cross-fertility indices of late-fertile plants were 0.044 and 0.090, respectively, lower than the standard of self-incompatibility and solidity index of 1.0. According to its male sterility and self-incompatibility, the author believes that the sterile material may be used for the preparation of hybrids, and the purity may be better than the self-fertile and trait hybrids of Brassica campestris.