【摘要】 测试了分离自我国8个省市马铃薯青枯病株的43个细菌菌株的致病性,并研究了它们对3种双糖和3种己醇的氧化能力。人工接种表明,所有菌株对马铃薯、番茄和茄子均具有微弱到很强的致病力。试验证明,供试的绝大部分菌株(38/43)属生化型Ⅱ,基本上来自一些马铃薯主要产区,有少数菌株(5/43)属生化型Ⅲ和Ⅳ,主要来自城市近郊蔬菜区。这一研究对马铃薯抗青枯病品种的培育以及设计综合防治技术措施提供了有用的资料。更多还原

【Abstract】 Forty three isolates of Pseudomonas solanacearum obtained from diseasedpotatoes in different provinces or areas were examed for pathogenicity onsome solanaceous plants and oxidation of three disaccharides(maltose,lac-tose and cellobiose)and three hexose alcohols(mannitol,dulcitol andsorbitol).Results indicated that all isolates caused weak to severe infec-tion on potato(Sotanum tuberosum L.cv.“zhongzhaihuangpi”and“Jing-feng No 1”),tomato(Lycopersicon esculentum Mill,cv.“Mangsi”)andeggplant(Solannm melongena L.cv.“Six Leaves”).According to oxi-dation of above described carbohydrides most isolates(38/43)were identi-fied to blong to Biotype Ⅱ,four—Biotype Ⅲ,and one—Biotype Ⅳ.更多还原