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一种新的党参根腐病害镰孢菌鉴定

Gansu Science and Technology(2021)

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Abstract
为了明确一种新的党参根腐病害的发病症状、病原、致病性和优势病原种类,采用组织分离法进行了病原菌分离,并根据其培养性状、形态学和分子生物学特征进行鉴定.结果 表明,该病害的病原为尖孢镰孢菌(Fusarium oxysporum、茄病镰孢菌(Fusarium sonali)、三线镰孢菌(Fusarium tricinctum)和锐顶镰孢菌(Fusarium acuminatum),其中尖孢镰孢菌为优势种.室内致病性测试结果表明,4种镰孢菌均可引起党参根腐病害,其中尖孢镰孢菌的致病性最强.本研究为党参根腐病害的防治提供理论依据.
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