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RELATIONSHIP BETWEEN THE ORIGIN AND EVOLUTION OF RAPESEEDS AND THE DEVELOPMENT OF CYTOPLASMIC MALESTERILE "THREE LINES"

Fu Tingdong (Huazhong Agricultural University,Wuhan,China)  
The CMS three lines in B.napus,B.campestris and B'.juncea in the world were analysised heve.It was concluded that;(1)It 's easy to find CMS and its restorers in cultivar populations with lower degree of evolution and primary species in the canters of origin and n,arby.(2)It's easy to find maintainers in the area far away from the centers and higher evolved cultivar populations The similar conclusions were gained by auther in analysisin other crops(Rice ate.).These view points might be valuable to the development of the CMS three lines in.rapeseed and other crops.
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