Species and physiological race identification of melon powdery mildew fungus in Jiangsu,Zhejiang and Shanghai areas
LI Pingfang
ZHU Lingli
YANG Xingping
XU Jinhua
LIU Guang
YAO Xiefeng
NIU Xujiang
Abstract：To identify the species and physiological races of melon powdery mildew fungus from Jiangsu,Zhejiang and Shanghai areas,nine powdery mildew fungus were collected from melon plants grown in plastic tunnels in southeast China in?lcuding Sucheng Suqian,Huai’an,Luhe Nanjing,Xuanwu Nanjing,Wuzhong Suzhou,Haimen Nantong in Jiangsu province, Jiading and Fengxian in Shanghai and Ningbo in Zhejiang province during autumn in 2014. Microscopic observation of the conidia and Coomassie brilliant blue staining of the hyphae identified them as Podosphaera xanthii. The rDNA internal tran?scribed space(ITS)sequence analysis of the fungus from Nanjing Xuanwu confirmed it as Podosphaera xanthii. When these pathogens were inoculated onto the 13 international standard differential host,they were classified as P. xanthii Race 1 ac?cording to their susceptible/resistant reactions,no other races were found. This study characterized the species and pre?dominate physiological races of melon powdery mildew fungus collected in Jiangsu,Zhejiang and Shanghai areas,which laid fundamental basis for melon powdery mildew resistant breeding.
Keywords：MelonPowdery mildewPhysiological raceJiangsuShanghaiNingbo
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 16-20 )