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园艺学报 ›› 2010, Vol. 37 ›› Issue (11): 1745-1750.

• 果树 • 上一篇    下一篇

我国桃树新病害——叶枯病的病原菌鉴定及生物学特性研究

张 勇*,李晓军,曲健禄,范 昆,杨建明   

  1. (山东省果树研究所,山东泰安 271000)
  • 收稿日期:2010-05-20 修回日期:2010-09-30 出版日期:2010-11-25 发布日期:2010-11-25
  • 通讯作者: 张 勇

Pathogen Identification and Biological Characteristic of Leaf Blight — A New Peach Disease in China

ZHANG Yong*,LI Xiao-jun,QU Jian-lu,FAN Kun,and YANG Jian-ming   

  1. (Shandong Institute of Pomology,Tai’an,Shandong 271000,China)
  • Received:2010-05-20 Revised:2010-09-30 Online:2010-11-25 Published:2010-11-25
  • Contact: ZHANG Yong

摘要: 对我国桃树上发生的一种新病害进行了病原鉴定及生物学特性研究。通过形态特征观察、致病性测定、rDNA-ITS序列测定及分析,确定该病害为立枯丝核菌(Rhizoctonia solani Kühn)引起的叶枯病,病原菌rDNA-ITS区序列已在GenBank上登录(GenBank登录号:GU270581)。病原菌生长的适宜温度为25 ~ 30 ℃,适宜pH 5 ~ 7,适宜碳源为蔗糖,适宜氮源为酵母。

关键词: 桃树, 叶枯病, 立枯丝核菌, 生物学特性

Abstract: The pathogen causing leaf blight on peach was isolated from diseased leaf. Based on morphological characteristics,pathogenicity test,the sequence of ribosomal DNA-ITS,the pathogen was identified as Rhizoctonia solani Kühn,the rDNA-ITS sequence data of the pathogenic fungus has been submitted to GenBank(GenBank accession number:GU270581). The temperature for mycelial growth of the pathogen ranged from 10 ℃ to 35 ℃,with the optimum temperature 25–30 ℃. The pH ranged from 4–10 with the optimum pH 5–7. For mycelial growth,the optimum carbon and nitrogen source were sucrose and yeast,respectively.

Key words: peach, leaf blight, Rhizoctonia solani Kühn, biological characteristics

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