水稻细菌性基腐病菌侵染规律研究

Infection characteristics of Erwinia chrysanthemi pv. zeae on rice

通过抗利富平水稻基腐病菌株Ech7,研究了病菌在水稻不同生育阶段的侵染和对产量的影响.结果表明:水稻基腐病菌可以在种子萌发阶段侵入,造成烂种和烂芽,而且病菌在水稻的不同生育期,均可侵入,其中以水稻生长的前期侵入更为重要,对产量的损失较大.研究还发现,水稻基腐病菌具有潜伏侵染现象.

The studies of infection characteristics of Erwinia chrysanthemi pv. zeae, the causal of rice bacterial foot rot, were conducted by the rifampin-resistant strain Ech7. The results showed that the pathogen could infect rice seeds during the seed germination, which made seeds and seedlings rotten. E. chrysanthemi pv. zeae could highly inhibit rice roots to grow. In addtion, the pathogen could also infect rice plant in different stages of rice. It was also found that the pathogen infected in the early stage of rice when the pathogen could cause greater damage in rice yield, and that E. chrysanthemi pv. zeae had the latent infection.