Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (26): 14-21.doi: 10.11924/j.issn.1000-6850.casb20200300260

Special Issue: 资源与环境 园艺

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Disease Resistance of Major Beta vulgaris Germplasms in China: Identification and Evaluation

Chen Li1,2,3(), Zhao Chunlei1,2,3, Li Yanli1,2,3, Wang Ronghua4, E Yuanyuan5, Wang Xi1,2,3, Li Cuifang6, Cui Ping1,2,3   

  1. 1College of Advanced Agriculture and Ecological Environment of Heilongjiang University/Sugar Beet Research Institute of Chinese Academy of Agricultural Sciences, Harbin 150080
    2The Key Laboratory of Sugar Beet Genetic Breeding, Colleges of Heilongjiang Province, Harbin 150080
    3Key Laboratory of North Sugar Crop Resource and Utilization, Chinese Academy of Agricultural Sciences, Harbin 150080
    4Xinjiang Shihezi Academy of Agricultural Sciences, Shihezi Xinjiang 832000
    5Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031
    6Cash Crop Institute, Xinjiang Academy of Agricultural Sciences, Urumqi 830091
  • Received:2020-03-26 Revised:2020-05-17 Online:2020-09-15 Published:2020-09-14

Abstract:

The study aims at detecting and evaluating the disease resistance of the major Beta vulgaris (sugar beet) germplasm sources in different ecological regions in China, and providing suggestions for their scientific and effective application in sugar beet anti-disease breeding studies. 313 germplasm sources from three ecological regions were collected as test materials. Under natural disease condition, according to the official standard for beet, the data of symptom grade were investigated, disease index was calculated and resistance levels were divided, respectively. 85 highly-resistant germplasms and 89 resistant germplasms to cercospora leaf spot were identified. 11 germplasms resistant to root rot, 3 germplasms resistant to rhizomania, 28 germplasms resistant to powdery mildew were identified. Meanwhile, germplasms with complex resistance to two diseases were identified. 5 germplasms highly-resistant to both leaf spot and root rot, 5 germplasms resistant to both leaf spot and root rot, 2 germplasms resistant to both leaf spot and rhizomania, 20 germplasms highly-resistant to leaf spot and resistant to powdery mildew were identified. The results suggest that the resistant germplasm sources in China are inadequate. Except the germplasm resources resistant to leaf spot, the germplasm resources resistant to root rot, rhizomania and powdery mildew are rare and have low resistant level.

Key words: Beta vulgaris (sugar beet), germplasm, disease resistance, evaluation

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