| 油梨苗期黑茎病病原菌的鉴定 |
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| 引用本文： | 仇芳,徐刚,谢昌平,李希,郑妃庆,缪卫国.油梨苗期黑茎病病原菌的鉴定[J].植物病理学报,2020,50(4):489-493. |
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| 作者姓名： | 仇芳 徐刚 谢昌平 李希 郑妃庆 缪卫国 |
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| 作者单位： | 海南大学植物保护学院,热带农林生物灾害绿色防控教育部重点实验室,海口 570228 |
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| 基金项目： | 海南大学植物保护学院学生学术科技创新支持项目(Hys2019-97) |
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| 摘 要： | 正油梨(Persea americana Mill.)又名鳄梨、牛油果和樟梨等,为樟科、鳄梨属,原产中美洲,属热带、亚热带名贵果树之一~1],具有营养价值高、风味好,其消费遍及全球,经济潜力巨大~2]。目前关于国内外病害的报道,主要有根腐病、炭疽病~3]、蒂腐病~4]和褐斑病~5]等。2017年5月,作者在海南省儋州市附近的苗圃中发现一种为害油梨苗茎基部的病害,发病率在15%～20%,严重时导致整株植物死亡。本研究对该病进行症状描述和
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| 收稿时间： | 2019-12-09 |
Identification of the pathogen causing black-stem on avocado(Persea americana)seedling |
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| QIU Fang,XU Gang,XIE Chang-ping,LI Xi,ZHENG Fei-qing,MIAO Wei-guo.Identification of the pathogen causing black-stem on avocado(Persea americana)seedling[J].Acta Phytopathologica Sinica,2020,50(4):489-493. |
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| Authors: | QIU Fang XU Gang XIE Chang-ping LI Xi ZHENG Fei-qing MIAO Wei-guo |
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| Institution: | Institute of Plant Protection, Hainan University; Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Haikou 570228, China |
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| Abstract: | In May 2017, a new black-stem disease, which caused brownish black streaks in the field at early stages, black necrosis and yellowing leaves at later stages, and wilting leaves death at final stage, was found in avocado plantations in Danzhou, Hainan province. The pathogen causing black stem of avocado was identified as Phytophthora palmivora from the isolates, based on pathogenicity test, morphological characteristics of the colony, chlamydospores, sporangia on different media, sequences alignment of COX Ⅰ, COX Ⅱ, ITS, TEF1-α and TUB2 and phylogenetic tree clustering analysis. This is the first report of P. palmivora causing black-stem on avocado seedling in China. The result could provide a reference for the control of avocado black-stem disease at seedling stage. |
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| Keywords: | avocado seedling black-stem disease Phytophthora palmivora |
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