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《Crop Research》 1990-03
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STUDIES ON POLIMA CYTOPLASMIC MALE STERILITY OF BRESSICA NAPUS L ·AND ITS UTILIZATION

Fu Tingdong,Yang Guangsheng,Yang Xiaoniu (Department of Agronomy, Huazhong Agricultural University, Wuhan, China)  
For enriching the restoring genes pool, 49 varieties of B.campestris and B.juncea were used as the pollinators to testcross with pol CMS line during 1988-1989,3 restorers (two of B.campestris, one of B. juncea ) were found.Po-lima CMS has no negative effect on the growth peroid,index of disease severity of sclerotinia sclerotiorum and economical characters of F1 hybrid. It is more difficult to develop winter rapeseed sterile lines than the spring.The relationship between the origin and evolution of rapeseed and the development of CMS "three lines" was discussed in this paper.
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