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Evaluating multiple resistance to major diseases in a core set of inbred lines of Brassica rapa at seedling stage

文献类型： 外文期刊

作者： Su, Tongbing 1 ; Yu, Shuancang 1 ; Gong, Zhenping 2 ; Zhang, Fenglan 1 ; Yu, Yangjun 1 ; Zhang, Deshuang 1 ; Zhao, Xiu 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr, Beijing 100097, Peoples R China

2.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China

关键词： Brassica rapa; Chinese cabbage; Pak choi; Turnip; Inbred lines; Disease resistance

期刊名称：JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.729； 五年影响因子：1.681 ）

ISSN： 1125-4653

年卷期： 2018 年 100 卷 3 期

页码：

收录情况： SCI

摘要： Years of continuous cropping of Brassica rapa crops in main producing areas in China lead to the outbreak of some diseases, such as downy mildew (DM), turnip mosaic virus (TuMV), black rot (BR), verticillium wilt (VW), and club root (CR), causing severe loss in yield and quality. Resistance to the aforementioned diseases of 302 inbred lines of Brassica rapa to DM, TuMV, BR, VW, and CR were evaluated under controlled conditions at seedling stage. Forty lines were identified to be highly resistant to DM, 13 to TuMV, 0 to BR, 30 to VW, and 24 to CR. Among the 302 lines, 121 exhibited high resistance to two diseases, 70 to three diseases, and eight to four diseases, but none of these lines showed comprehensive resistance to all the five diseases. Chinese cabbage lines XDYFX, 536S, 536Q, DYxT, and CR-C, and Pak choi lines DFAKxSH, NB, and SYHTC showed high resistance to four diseases and therefore represent elite materials in multiple-disease resistance breeding. In addition, different disease resistance tendencies were discovered in diverse Chinese cabbage groups which were classified in different ways, such as the ecotype, heading-type, and geographical origin.

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