文献类型： 会议论文

第一作者： Wen Yancheng

作者： Wen Yancheng ¹ ; Zhang Shufen; Tian Baoming; Wang Jianping; Zhu Jiacheng; Liu Jianmin;

作者机构： 1.Institute of Cotton and Oil Crops, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China

关键词： rapeseed;cultivar resources;cytoplasm;cell nucleus;fertility type;genotype

会议名称： International Symposium on Rapeseed Science

主办单位：

页码： 100-104

摘要： Forty-nine B. napus varieties with some available agronomic characters were crossed with Zheng 32A (as maternal) and Zheng 32B (as paternal), respectively. The cytoplasmic fertility types and nucleic fertility genotypes of the variety resources were determined by the results of fertility investigation of F_1 and F_2. The results showed that there were 17 varieties with pure restoring genotype (RR), which was 34.69% to total variety number. In the 17 varieties, 13 varieties had sterile cytoplasm (S) and 4 varieties had fertile cytoplasm (N). There were 24 varieties with pure sterile nucleic fertility genotype (rr), which was 48.98% to total variety number. The result indicated there were less restorer materials than maintainer materials in the present rapeseed varieties. Eight varieties had nucleic fertility genotype of (Rr), in which there were 5 varieties with sterile cytoplasm (S) and 3 varieties with fertile cytoplasm (N). It was more efficient to determine the cytoplasmic fertility types and nucleic fertility genotypes with both the cytoplasmic male sterile lines and maintainers than just with the maintainers.

分类号： S5