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对田间和室内分别筛选的抗噻枯唑的水稻白叶枯病菌菌株性质研究发现:室内筛选的抗药菌株在水稻上失去致病性,而田间抗药菌株在离体下则不表现抗药性;抗噻枯唑的菌株对敌枯唑表现交互抗性,对叶枯净不表现交互抗性;抗性菌株与敏感菌株混合接种于无药水稻上发现,抗性菌株的竞争力稍低于敏感菌株;供试的抗性菌株在无药平板上转移6代后,抗性仍很稳定,但在无药的水稻上反复接种、分离4代后,抗性水平有所下降。
Studies on the properties of isolates of thiophene-resistant rice bacterial leaf blight found in the field and indoors showed that the antibiotic-resistant strains screened indoors lost their pathogenicity in rice, while the resistant strains in the field did not show resistance in vitro ; The anti-thiophene-resistant strains exhibited cross-resistance to dipyrazole and no reciprocal resistance to leaf chlorophyll; the resistant strains were mixed with the susceptible strains and inoculated on the drug-free rice showed that the competitiveness of the resistant strains was slightly lower than The resistant strains were tested. After six generations of resistant strains were transferred on the drug-free plates, the resistance was still stable, but repeatedly inoculated on drug-free rice, the resistance level decreased after 4 generations.