我国甘薯新病害-茎腐病的研究初报

被引:28
作者
黄立飞
罗忠霞
房伯平
陈景益
张雄坚
王章英
机构
[1] 广东省农业科学院作物研究所
关键词
甘薯; 茎腐病; 菊欧文氏菌;
D O I
10.13926/j.cnki.apps.2011.01.003
中图分类号
S435.31 [甘薯病虫害];
学科分类号
090401 ; 090402 ;
摘要
2006年以来广东省主要甘薯产区发现1种甘薯新病害,主要症状表现为叶片变黄,茎基部呈黑色水浸状腐烂,并逐渐沿茎枝向顶端腐烂,后整株倒伏、死亡。从甘薯病茎部分离得到了病菌,经柯赫法则验证为致病病原菌。根据病原菌的形态特征、培养性状、生理生化及16S rDNA序列分析,鉴定其为菊欧文氏菌(Erwinia chrysanthemi)。采用茎枝、菌液共培养法接种8个甘薯品种,结果表明8个品种均无抗病性,病原菌致病性较强。这是我国首次发现该病害。
引用
收藏
页码:18 / 23
页数:6
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