抗根肿病甘蓝型油菜新品种华油杂62R的选育 |
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基金项目: | National Key Research and Development Program of China(2016YFD0101300);China Agriculture Research System(CARS-12) |
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摘 要: |
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收稿时间: | 2020-04-02 |
Breeding of a novel clubroot disease-resistant Brassica napus variety Huayouza 62R |
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Authors: | LI Qian Nadil Shah ZHOU Yuan-Wei HOU Zhao-Ke GONG Jian-Fang LIU Jue SHANG Zheng-Wei ZHANG Lei ZHAN Zong-Xiang CHANG Hai-Bin FU Ting-Dong PIAO Zhong-Yun ZHANG Chun-Yu |
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Institution: | 1.College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China;2.Yichang Academy of Agricultural Sciences, Yichang 443000, Hubei, China;3.Dehong Dai Jingpo Autonomous Prefecture Agricultural Technology Extension Center, Dehong 678400, Yunnan, China;4.Huanggang Academy of Agricultural Sciences, Huanggang 438000, Hubei, China;5.College of Horticulture, Shenyang Agricultural University, Shenyang 110000, Liaoning, China |
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Abstract: | The rapeseed clubroot disease incidence in China is about 0.67 million hectare, accounting for 10% of the canola production area, which become a serious threat for the safety of Brassica napus industry. Based on this, we used CR Shinki, a Chinese cabbage material containing CRb clubroot disease resistance locus, as the donor parent, and Pol.CMS restorer line Bing409, the parent of Brassica napus national approved varieties Huayouza 62, as the recipient parent, and the CRb resistance locus was introduced into Bing409 by breeding programs such as crossing, backcrossing, self-cross with the foreground and genetic background selection. In the BC3F2 generation, a new restorer line Bing409R with a genetic background close to Bing409 containing CRb resistance locus was obtained, and Huayouza 62R, the first rapeseed hybrid resistant to clubroot disease in China was successfully developed. The results were as follows: CRb disease resistance locus appeared as a dominant single-gene inheritance in B. napus background, and the genetic improvement of resistance to clubroot disease did not at the expense of yield and quality losses for new restorer line Bing409R and its hybrid Huayouza 62R. Bing409R and Huayouza 62R were showed immune-resistance to physiological races of Plasmodiophora brassicae in Sichuan, Hubei, and Anhui provinces in China. This study will provide valuable resources for the breeding of rapeseed in China, and supplemented important support to overcome the threat of rapeseed clubroot disease. |
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Keywords: | Brassica napus clubroot disease CRb resistance locus restorer line genetic improvement Huayouza 62R |
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