新疆喀什地区设施番茄晚疫病调查及品种抗病性鉴定

Survey of Tomato Late Blight and Identification of Resistance of Cultivars in Greenhouse in Kashi Region of Xinjiang

[目的]了解喀什地区设施番茄晚疫病发生和新引进番茄品种对番茄晚疫病的抗性情况.[方法]在番茄晚疫病发生时期,调查喀什地区疏勒县、英吉沙县、莎车县和叶城县温室番茄晚疫病发生情况,并采用室内苗期人工接种的方法鉴定新引进品种对番茄晚疫病的抗性.[结果]番茄晚疫病病叶率为15.6％～100％,病果率为3.4％～57.3％,病情指数为14.1～100.不同番茄品种抗病性鉴定中,909、新粉7号、俄毕德、DBE-1、KY-2、新粉8号、ZBO-2和8500-4病级指数分别为1.09、3.4、1.24、4.5、5.25、5.04、4.17和4.43.[结论]9月至第二年3月,番茄晚疫病可在喀什地区温室中发生并流行.品种909、新粉7号和俄毕德表现为抗番茄晚疫病,其他5个供试品种表现为感病.

[ Objective] In order to understand the occurrence of tomato late blight in greenhouse in Kashi area of Xinjiang and resistance of new tomato varieties to tomato late blight. [ Method] In the late blight occur- ring period, the occurrence of tomato late blight in greenhouse in Shule, Yingjisha, Shache and Yecheng of Kashi Prefecture was investigated and the resistance of new varieties to tomato late blight by indoor inoculation in seedling stage was identified. [ Result]The results showed that diseased leaf rate was 15.6% -100% , dis- eased fruit rate was 3.4% -57.3% , and disease index was 14. ｜ -100. Identification of disease resistance of different tomato varieties were ： disease index of 909, Xinfen 7, Ebide, DBE - 1, KY - 2, Xinfen 8, ZBO - 2 and 8500 -4 were respectively I. 09, 3.4, 1.24, 4.5, 5.25, 5.04, 4.17 and 4.43. [ Conclusion] Occur- rence and prevalence of tomato late blight happened from September to the second year in March in greenhouse in Kashi. Varieties 909, Xinfen 7 and Ebide were resistance to tomato late blight, but other five varieties were susceptible.