引进番茄品种抗晚疫病苗期鉴定及抗性品种筛选

以俄罗斯番茄品种A5、A6、A8、A9、A10、7-1、20、富贵（中国）和日本品种耐运2000为试材进行番茄苗期抗晚疫病鉴定及抗性品种筛选，研究表明：（1）最适的孢子囊悬浮液接种浓度为1×103孢子囊/ml；（2）同一品种幼苗比离体叶片病情指数普遍偏低；（3）耐运2000 、A10抗病性最强（抗病品种），A9、20、7-1、A5和A8中等（感病品种），富贵和A6最差，属于高感品种。因此耐运2000和A10有希望成为抗晚疫病品种或作为进一步培育抗晚疫病品种的亲本。

The Indentification of Introduced Tomato Varieties Phytophthora infestans (Mont.) De Bary in the Detched Sage Sequent and Varieties Selection

Different varieties A5k,A6,A8,A9,A10,7-1,20 of the Russia,Fugui（china）and naiyun 2000 of the Japanese tomato were used as materials for the indentification of Tomato Phytophthora infestans（Mont.）De Bary in detched sage sequent and varieties selection.The results showed that：The optimum spore concentration for inoculation was 1×10^3spores/mL;The disease index of young seedlings was lower than that of the detached leaves;The disease-resistance of Russia tomato variety naiyun 2000 is the best,the disease-resistance of A9,20,7-1,A5 and A8 have the medium resistance,Fuigui and A6 have the lowest resistance.Therefor,varieties naiyun 2000 of the Japanese tomato and A9 of the Russia tomato may be used as the varieties of resistant Phytophthora infestans or parents of resistant Phytophthora infestans.