Studies on the varietal resistance of rice to bacterial foot rot (Erwinia chrysanthemi pv. zeae) and the differentiation on virulence of the pathogen
1989
Wang Jinsheng | Yao Ge | Fang Zhongda (Nanjing Agricultural Univ. (China))
A total of 622 varieties from China and abroad were tested for their resistance to bacterial foot rot (Erwinia chrysanthemi pv. zeae) by method of dipping roots. The results indicated that of the varieties tested 127 were highly resistant, 210 were moderate resistant, 189 were moderate susceptible and 96 were highly susceptible. 10 isolates of rice pathogen and 2 isolates of corn pathogen were used to inoculate 20 rice varieties to detect their differentiation of virulence. The statistical data showed no differentiation within rice isolates from different regions in their virulence but the resistance of rice varieties to the pathogen was significantly different. The corn isolates had weak virulence in comparison with rice isolates
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