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园艺学报 ›› 2004, Vol. 31 ›› Issue (6): 758-761.

• 研究论文 • 上一篇    下一篇

中国18 省市番茄晚疫病菌生理小种的鉴定

冯兰香;杨宇红;谢丙炎;冯东昕;杨翠荣

  

  1. (中国农业科学院蔬菜花卉研究所, 北京100081)
  • 收稿日期:2004-07-30 修回日期:2004-11-30 出版日期:2004-12-25 发布日期:2004-12-25

Identification of Physiological Races of Phytophthora infestans on Tomato inEighteen Provinces of China

Feng Lanxiang ;Yang Yuhong; Xie Bingyan; Feng Dongxin;Yang Cuirong
  

  1. ( Institute of Vegetables and Flowers , Chinese Academy of Agricultural Sciences , Beijing 100081 , China)
  • Received:2004-07-30 Revised:2004-11-30 Online:2004-12-25 Published:2004-12-25

摘要: 利用5 个含有不同单显性抗番茄晚疫病基因的番茄材料Ts19、Ts33、W1Va700、LA1033 和L3708为鉴别寄主, 对我国18 省、市、自治区的番茄晚疫病菌201 个纯化分离物进行了生理小种鉴定。结果共鉴定出8 个小种, 即生理小种T0、T1、T1 ,2 、T1 ,2 ,3 、T1 ,2 ,3 ,4 、T1 ,4 、T1 ,2 ,4 和T3。其中, 小种T1 和T1 , 2是主流小种, 地理分布最广和发生频率最高, 分别在13 和11 个省市出现, 占样本总数的28.8 %和28.4 %;其次是小种T0 和T1 ,2 ,3 , 分别在8 和7 个省市出现, 分别占1819 %和819 %; 再其次是小1 ,2 ,3 ,4 , 在4个省市有发生, 占710 %; 小种T1 ,2 ,4 、T1 ,4 和T3 分布均少, 仅在1~2 个省市发生, 分别占3.0 %、2.5 %和2.5 %。这是我国的首次报道, 为番茄晚疫病的抗源材料筛选和抗病育种提供了病理学依据。

关键词: 番茄晚疫病, 生理小种, 鉴别寄主, 鉴定

Abstract: Two hundred and one isolates of Phytophthora infestans on tomato from eighteen provinces , cities and autonomous regions were identified by using five differential tomato lines containing different resistance genes ,
which were Ts19 , Ts33 , W1Va 700 , LA1033 and L3708. The result indicated that the eight different physiological races were found out . Race T1 and T1 ,2 were widely distributed in 13 and 11 provinces with high frequencies of
28.8 % and 28.4 % respectively. Followed by T0 and T1 ,2 ,3 occurred in eight and seven provinces with frequencies of 1819 % and 819 % respectively. Then race T1 ,2 ,3 ,4 occurred in four provinces with 7 % frequency. The race T1 ,2 ,4 , T1 ,4 and T3 were narrowly distributed only in one or two provinces with 3.0 % , 2.5 % and 2.5 % respectively. This is the first report in China.

Key words: Tomato late blight, Physiological race, Differential host, Identification

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