大樱桃黑斑病病原鉴定及其致病性研究  

Studies on Identification and Pathogenicity of Cherry Black Spot Caused by Alternaria alternata

作　　者：赵远征[1] 刘志恒[1] 李俞涛[1] 周思[1] 黄欣阳[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110866

出　　处：《园艺学报》2013年第8期1560-1566,共7页Acta Horticulturae Sinica

摘　　要：针对大樱桃黑斑病进行了病原菌鉴定及致病性测定,通过形态学鉴定和rDNA-ITS序列分析,确定其病原菌为链格孢(Alternaria a lternata)。致病性测定结果表明:该菌可以直接侵染或通过自然孔口和伤口侵染大樱桃果实,伤口接种的果实发病较重;病原菌对有伤叶片具有一定的致病能力,不侵染无伤叶片;该菌对梨、杏、李等果实致病性较强,对山楂果实的致病能力相对较弱。The test was based on the pathogen’s identification and pathogenicity of cherry black spot. And it was identified as Alternaria alternata by morphological identification and rDNA-ITS sequence analysis. Pathogenic test showed that it infected the cherry fruits directly or by wound and natural ostiole, and disease on the fruits inoculated by the pathogen through wound was more serious. The pathogen showed some pathogenicity on the wound leaves,but had no effect on the intact ones. The pathogen effected on pear,apricot and plum fruits with high pathogenicity,while it infected hawthorn fruits with a relatively low pathogenicity.

关 键 词：大樱桃 黑斑病 链格孢 鉴定 致病性 

分 类 号：S662.5[农业科学—果树学]