The determination of physiological race of Fusarium oxysporum f. sp. lycopersici of tomato in Zhejiang, China |
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| Authors: | Zhihao Xu Kaimay Huang Weiling Shou Sengjiu Zhou Guojing Li Liping Chen Zhihui Xu Hongxia Wang Xiuchu Xiu Guangliang Xu Baishen Jin |
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| Institution: | (1) Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, 310021 Hangzhou, China;(2) Hangzhou Seed Company, Hangzhou, Zhejiang, P. R. of China;(3) Ningbo Institute of Agricultural Sciences, 315040 Ningbo, Zhejiang, P. R. of China;(4) Dongguang Agriculture service station, 312352 Shangyu, Zhejiang, P. R. of China |
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| Abstract: | A group of differential tomato lines was used to identify the races of Fusarium oxysporum f. sp. lycopersici in Zhejiang, China. Marmande verte carries no resistant genes and Marporum carries gene I-1. Both lines Motelle and Mogeor
have Gene I-1 and I-2. Tomato seedlings of eighteen days after sowing were inoculated with an isolate of Fusarium oxysporum f. sp. lycopersici, No. 98-2 and kept in a growth chamber. The seedlings were evaluated at fourteen days after inoculation. Results showed that
Marmande verte and Marporum were severely infected by the pathogen and established as susceptible. Motelle and Mogeor were
not infected and established as resistant. These results indicated that the isolate No. 98-2 represented the race 2 of Fusarium oxysporum f. sp. lycopersici and gene I-2 is necessary for obtaining resistance to this pathogen in the Zhejiang region. |
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| Keywords: | Fusarium oxysporum f sp lycopersici genotype Lycopersicon esculentum physiological race virulence |
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