首页|烟粉虱对甘薯种薯带毒率及病毒病发生的影响

烟粉虱对甘薯种薯带毒率及病毒病发生的影响

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病毒病是影响甘薯产量和品质的重要限制因素.甘薯褪绿矮化病毒(sweet potato chlorotic stunt virus,SPCSV)和甘薯羽状斑驳病毒(sweet potato feathery mottle virus,SPFMV)是危害我国甘薯的主要病毒.甘薯种薯感染SPCSV是甘薯苗期病毒病严重发生的关键因素.本研究分析了甘薯田烟粉虱发生量和带毒率对种薯带毒率及病毒病发生的影响,建立了甘薯种薯感染病毒风险和苗期病毒病发生风险的早期预警方法.结果表明,甘薯田烟粉虱发生量和SPCSV带毒率与种薯SPCSV带毒率密切相关,在田间烟粉虱发生量和带毒率较高的情况下,即使种植不含任何病毒的脱毒试管苗,也会引起较高的种薯带毒率,但不会引起甘薯地上部植株的严重显症.甘薯种薯SPCSV带毒率以及SPCSV和SPFMV复合带毒率与苗期病毒病显症率呈极显著正相关关系,可以利用种薯带毒率预测甘薯苗期病毒病显症率.
Impact of whitefly(Bemisia tabaci)on viruliferous rate of sweet potato storage root and viral disease occurrence
Virus disease is a main constraint that influences sweet potato yield and quality.The most important viruses for sweet potato are the sweet potato chlorotic stunt virus(SPCSV)of the genus Crinivirus and sweet potato feathery mottle virus(SPFMV)of the genus Potyvirus.SPCSV-infected sweet potato storage roots incline to develop severe viral disease at the seedling stage.However,the effect of whitefly(Bemisia tabaci)in sweet potato fields on the proportion of SPCSV-viruliferous storage roots and viral disease occurrence remains largely unknown.Here,we report that the amount of whitefly and the rate of SPCSV-viruliferous whiteflies in sweet po-tato fields were closely related to the viruliferous rate of storage roots.When there was a high number of virulif-erous whiteflies in sweet potato fields,a high rate of viruliferous storage roots were triggered,even though virus-free sweet potato cuttings that would not induce severe symptoms in above ground plants had been planted.The SPCSV infection rate and double infection of storage roots with SPCSV and SPFMV presented significant posi-tive correlations with the virus-like symptom rate in sprouts generated from the storage roots.The symptom rate in sprouts can be predicted by the viruliferous rate of storage roots.

whitefly(Bemisia tabaci)sweet potato chlorotic stunt virussweet potato feathery mottle virusrate of viruliferous whitefliesrate of viruliferous storage roots

王爽、赵付枚、田雨婷、乔奇、张德胜、王永江、张振臣

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河南省农业科学院植物保护研究所,郑州 450002

农业农村部华北南部作物有害生物综合治理重点实验室,郑州 450002

甘薯田烟粉虱 甘薯褪绿矮化病毒 甘薯羽状斑驳病毒 烟粉虱带毒率 种薯带毒率

国家甘薯产业技术体系建设项目河南省优势学科培育联合基金重点项目河南省农科院自主创新基金河南省农科院自主创新基金

CARS-10-B152223014200292022ZC392024ZC058

2024

10.13926/j.cnki.apps.001314

植物病理学报
中国植物病理学会

植物病理学报

CSTPCD北大核心
影响因子：0.865
ISSN：0412-0914
年,卷(期)：2024.54(1)
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