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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (4): 126-131.doi: 10.11924/j.issn.1000-6850.casb2023-0107

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Identification and Evaluation of Resistance of Flue-Cured Tobacco with Different Genotypes to Fusarium Root Rot

LI Xuejun1(), GUO Jing1, SUN Jiping1, SUN Huan1, LI Fangfang2, PING Wenli1, LI Jianhua3, ZU Huanxin1, LI Xuhui1, HOU Yong1, GENG Shengna1   

  1. 1 Tobacco Research Institute of Henan Academy of Agricultural Sciences/Key Laboratory of Green Prevention and Control of Tobacco Diseases and Pests in Huanghuai Tobacco Area of Tobacco Industry, Xuchang, Henan 461000
    2 Henan Province Tobacco Company, Zhengzhou 450018
    3 Henan Xuchang Tobacco Company, Xuchang, Henan 461000
  • Received:2023-02-15 Revised:2023-04-30 Online:2024-02-05 Published:2024-01-29

Abstract:

In order to clarify the resistance of flue-cured tobacco with different genotypes to Fusarium tobacco root, the resistance was identified by crude toxin stress culture, inoculation of grain culture with fungi, and spore suspension culture. The results showed that the test varieties showed significant differences in resistance, ‘Y2001’, ‘Y2002’, ‘Changbohuang’, and ‘664-01’ showed resistance to Fusarium oxysporum, and ‘7710’, ‘7713’, ‘Y2007’, ‘Y2008’, ‘Zhongyan 100’ and ‘Xiaohuangjin 1025’ showed susceptibility to F. oxysporum. The identification results of the three inoculation methods were basically consistent, and a total of 4 resistant varieties (lines) were screened.

Key words: tobacco, Fusarium oxysporium, tobacco root rot, resistance, disease index