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

ACTA HORTICULTURAE SINICA ›› 2010, Vol. 37 ›› Issue (11): 1745-1750.

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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

（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

Abstract

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

CLC Number:

S 662.1

ZHANG Yong;LI Xiao-jun;QU Jian-lu;FAN Kun;and YANG Jian-ming. Pathogen Identification and Biological Characteristic of Leaf Blight — A New Peach Disease in China[J]. ACTA HORTICULTURAE SINICA, 2010, 37(11): 1745-1750.

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

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