轮纹镰孢菌(Fusarium concentricum)引起滇黄精根茎腐病的首次报道
First report of rhizome rot on Polygonatum kingianum caused by Fusarium concentricum
查看参考文献15篇
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文摘
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滇黄精(Polygonatum kingianum Coll.et Hemsl.)为百合科(Liliaceae)黄精属(Polygonatum)草本植物,产于中国云南、四川和贵州省,是一种药食两用的大宗中药材。随着云南高原特色农业的深入实施,滇黄精产业已发展成为云南中药的重要支柱产业之一,种植滇黄精也成为云南农民脱贫致富的有效途径。近年来,随着种植年份增加以及种植面积扩大,滇黄精主产区根茎腐病常有发生,田间发病率普遍在10% ~ 20%之间,连作年限较长的重病田发病率超过70%,已成为云南滇黄精产业发展的重要制约因素。病害发生后,地上部初期症状不明显,发病中期叶片由下而上逐渐变黄,后期整株枯萎直至死亡。病原可随着土壤移动和水流进行传播,在田间先形成中心病株,然后逐渐向四周扩散,重病田可导致严重减产甚至绝收,最终土地遭弃用。滇黄精根茎腐病主要侵染植株根部,病程长,初期很难发现,一旦地上部出现症状再进行药剂防治往往为时过晚,常造成严重的经济损失。 |
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其他语种文摘
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Polygonatum kingianum Coll.et Hemsl.,a perennial herbaceous plant belonging to the family Liliaceae,has special medicinal and dietary values.Rhizome rot,usually leading to the decrease of yield and quality,is a frequently occurred disease on P.kingianum in Yunnan Province.In this study,diseased P.kingianum samples with typical symptoms of rhizome rot were collected,and a representative fungal strain 19-1 was obtained by tissue isolation and single spore purification.The pathogenicity of strain 19-1 to P.kingianum was tested and confirmed by irrigating inoculation of plant seedlings with spore suspension (1×10~6 spores·mL~(-1)).According to morphological characteristics and multigene-based phylogenetic analysis results,strain 19-1 was identified as Fusarium concentricum.This is the first report of F.concentricum causing rhizome rot on P.kingianum.Our results provide a theoretical basis for further investigation of the epidemiology and integrated control of the disease. |
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来源
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植物病理学报
,2025,55(1):149-152 【核心库】
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DOI
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10.13926/j.cnki.apps.001642
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关键词
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黄精
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根茎腐烂
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同心镰刀菌
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病原菌鉴定
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地址
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1.
云南农业大学植物保护学院, 云南, 650201
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云南省农业科学院农业环境资源研究所, 云南, 652025
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0412-0914 |
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学科
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植物保护 |
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基金
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云南省重大科技专项计划
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文献收藏号
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CSCD:7901732
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