Identification of a Cytoplasmic Male Sterile Line NEA in Brassica napus L. and Its Genetic Studies |
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Authors: | JIANG Liang-cai PU Xiao-bin ZHANG Qi-xing CHEN Fang Zhang Jin-fang |
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Affiliation: | 1. The Crop Institute of the Sichuan Academy of Agricultural Sciences, Chengdu 610066, P. R. China 2. Sichuan University, Chengdu 610064, P. R. China |
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Abstract: | Male sterile NEA plants were identified in progenies of the radiated 92P×Aggregate-silique in Brassica napus L. In 1993. Their progeny plants from test crossing and open pollination were 100% male sterile. The double-low male sterile lines JL-4 and JL-18 were bred through successive backcrossing of the double -low variety No. 4 and No. 18 in Brassica napus L. To NEA. Restorer lines 6720 and 6722 with significant heterosis in F1 were developed. The results from investigating the restoring-maintaining relationship and inheritance of the restorer gene indicated that JL-4 and JL-18 were different from both PolCMS and Shan 2A type,and their restorer gene was controlled by a pair of dominant genic genes. |
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Keywords: | Brassica napus L. Male sterile line Restorer line Heredity |
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