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桃苗炭疽病危害症状及病原菌的生物学特性

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针对桃树育苗工作中桃苗炭疽病发生严重的现状,对桃苗炭疽病的危害进行了田间观察,并对其病原茵进行室内分离、培养及其生物学特性的观测研究,从而为该病的防治提供科学依据.研究结果表明:桃苗炭疽病的病原菌为Colletotrichum gloeosporioides,主要发生在1年生桃苗的茎上,造成桃苗倒伏或枯萎;发病期为4-7月,发病盛期为5月,病害潜育期为10 d;室内生物学特性测定结果表明:病原茵分生孢子萌发的适宜温度为23~30℃,最适湿度为95%以上.
Symptoms and Pathogenic Biological Characteristics of Anthracnose Caused by Colletotrichum gloeosporioides on Peach Seedling
The injury of anthracnose on peach seedling in the field was investigated, isolation,incubation, and biological characteristics observation of the pathogen were carried out to solve the serious occurrence problem of anthracnose on peach seedling, and provide basis for its prevention. The results showed that the pathogen was Colletotrichum gloeosporioides, which mainly infected one-year-old peach seedlings, and resulted damping-off or wilting. It broke out from April to July, reached peak in May, and with 10 days of latent period. Results of biological characteristics in lab indicated that the suitable temperature was 20~30℃, and humidity above 95 % for the germination of the pathogen conidia.

peach seedinganthracnosesymptombiological characteristics

杨春华、李新贵、梁挺

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贵州省林业科学研究院,贵州贵阳550005

贵州省林业学校,贵州修文550201

桃苗 炭疽菌 症状 生物学特性

2011

贵州农业科学
贵州省农业科学院

贵州农业科学

CSTPCD北大核心
影响因子:0.642
ISSN:1001-3601
年,卷(期):2011.39(5)
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