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

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (6): 758-761.

• 研究论文 • Previous Articles Next Articles

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

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

( 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

Abstract

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

CLC Number:

Feng Lanxiang;Yang Yuhong;Xie Bingyan;Feng Dongxin;Yang Cuirong. Identification of Physiological Races of Phytophthora infestans on Tomato inEighteen Provinces of China[J]. ACTA HORTICULTURAE SINICA, 2004, 31(6): 758-761.

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

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