Resistance to Plasmodiophora brassicae in Brassica rapa and Brassica juncea genotypes From China

文献类型： 外文期刊

第一作者： Zhang, Hui

作者： Zhang, Hui;Zhang, Shujiang;Zhang, Shifan;Li, Fei;Sun, Rifei;Zhang, Hui;Strelkov, Stephen E.;Feng, Jie;Hwang, Sheau-Fang

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期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）

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收录情况： SCI

摘要： Clubroot disease, caused by Plasmodiophora brassicae Woronin, has become a major problem in cruciferous crops worldwide. Chinese cabbage (Brassica rapa), pakchoi (B. rapa), and mustard (B.juncea) are important vegetable crops in China. Development ofclubroot-resistant cultivars of these crops is urgently needed. In this study, 71 B. rapa and B.juncea genotypes from China, including cultivars and inbred lines, were evaluated for resistance to three P. brassicae pathotypes. A significant interaction was observed between the P. brassicae pathotypes and the Brassica genotypes. Pathotype 3, as defined on the differentials of Williams, exhibited theweakest virulence on all plant material. By contrast, pathotypes 5 and 6 were both highly pathogenic on most of the tested genotypes. In all, 10 of the 14 Chinese cabbage cultivars were resistant to all three pathotypes, while 4 were resistant only to aspecific pathotype. Seven of eight progenies obtained from the selfing of Chinese cabbage cultivars were resistant to pathotype 3 but most were susceptible to pathotypes 5 and 6. Most inbred lines of Chinese cabbage and all inbred lines of pak choi and mustard were susceptible to all three pathotypes but their susceptibility was lower to pathotype 3 than to pathotypes 5 and 6.

分类号： S4

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