王芳芳,王仁才,石浩,周倩,王琰.湖南衡阳地区冬枣病害调查及主要病害病原鉴定[J].湖南农业大学学报:自然科学版,2019,45(4):.
湖南衡阳地区冬枣病害调查及主要病害病原鉴定
  
DOI:
中文关键词:  冬枣  缩果病  枣果褐斑病  病原鉴定  湖南衡阳地区
英文关键词:winter jujube  jujube witches’ broom disease  jujube brown spot  pathogen identification  Hengyang area Hunan
基金项目:湖南省科学技术厅重点研发项目(2017NK2071,2018NK2013);湖南农业大学与衡山紫冠生态农业有限公司合作项目(502640103 17024)
作者单位
王芳芳,王仁才,石浩,周倩,王琰 1.湖南农业大学园艺园林学院湖南 长沙 4101282.湖南农业大学植物保护学院湖南 长沙 4101283.湖南农业大学东方科技学院湖南 长沙 410128 
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中文摘要:
      2017年5月至2018年9月,对湖南衡阳地区4个冬枣生产基地进行病害调查,采集发病率较高的病害样品进行病原鉴定。调查结果显示,衡阳地区冬枣病害主要有灰霉病、疮痂病、褐头病、炭疽病、枣疯病、缩果病、白绢病、枣果褐斑病,其中,缩果病、枣果褐斑病发病率较高,分别为9.2%和20.8%,其他病害发病率低于5%。缩果病多发于果实膨大期,一般从果实腰部开始出现皱纹,病部变红皱缩,后期扩展到果柄至整果;枣果褐斑病多发于果实膨大期,果面有褐色斑点,圆形,后期病斑中央渐灰白色,不影响果肉品质。鉴定冬枣缩果病、枣果褐斑病病原菌分别为链格孢菌(Alternaria alternata)和极细枝孢霉(Cladosporium tenuissimum)。
英文摘要:
      From May 2017 to September 2018, disease investigation was carried out on 4 winter jujube production bases in Hengyang area of Hunan province, and the disease samples with higher incidence rate were collected for pathogen identification. The results of the survey showed that the winter jujube diseases include gray mold, scab, brown head, anthracnose, jujube witches’ broom disease, shrinkage, chalk, and jujube brown spot in Hengyang area. Among them, the incidence of shrinkage disease and jujube brown spot disease is high, which is 9.2% and 20.8%, respectively, and the incidence of other diseases are less than or equal to 5%. Shrinking disease occurs mostly in the fruit expansion period, generally wrinkles appear from the waist, the diseased part becomes red and shrink, and later extends to the fruit stalk to the whole fruit; jujube fruit brown spot disease occurs mostly in the fruit expansion period, and the fruit surface has round brown spots, later the center of the lesions become grayish white, which does not affect the quality of pulp. The pathogens of shrinkage disease and jujube brown spot disease were identified to be Alternaria alternata and Cladosporium tenuissimum, respectively.
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