植物检疫产品与昆虫病原真菌联合防治害虫的效果

Anahi Musso, Claudia Cristina Lopez Lastra, Susana Beatriz Padin, Graciela Monica Minardi, Jose Eduardo Marcondes Almeida
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摘要

植物检疫产品(PPs)与昆虫病原真菌(EF)的结合可用于害虫综合治理(IPM)计划。本研究的目的是在实验室和半田间条件下,研究阿根廷和巴西常用的PPs与球孢白僵菌、绿僵菌和烟孢虫草联合施用对小麦收获后害虫的防治效果。体外相容性采用基于真菌营养生长、产孢和萌发百分比的生物指数(BI)进行评估。在半田间条件下对菌落形成单位(cfu)数量进行了评价。在所有情况下,与对照相比,施用PPs降低了平均发芽率。根据BI,除了L7的Lambdacialotrine对球孢白僵菌有中等毒性外,所有评估的处理都与三种分离株中的任何一种都不相容。与对照相比,经评估的PPs对球孢白僵菌和烟孢白僵菌的cfu数量没有影响。而PPs对绿僵菌cfu数量的影响与真菌在籽粒上的停留时间无关。在半野外条件下,PPs和EF应分别应用,但在野外条件下,应进行进一步的研究,以确认在IPM策略内的兼容性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of the combination of phytosanitary products and entomopathogenic fungi for the control of insect pests
The combination of phytosanitary products (PPs) and entomopathogenic fungi (EF) can be used in integrated pest management (IPM) programs. The aim of the present work was to study the effects of PPs, commonly used in Argentina and Brazil, combined with Beauveria bassiana, Metarhizium anisopliae and Cordyceps (Isaria) fumosorosea, for the control of insect pests in the post-harvest of wheat, under laboratory and semi-field conditions. In vitro compatibility was assessed using the biological index (BI) based on the percentages of fungal vegetative growth, sporulation, and germination. The number of colony-forming units (CFUs) was evaluated under semi-field conditions. In all cases, PPs evaluated reduced the mean germination percentages as compared with the control. According to the BI, none of the treatments evaluated were compatible with any of the three isolates, except for the treatment L7 of Lambdacialotrine, which was moderately toxic on B. bassiana. Evaluated PPs did not affect the number of CFUs of B. bassiana or C. fumosorosea with respect to the control. In contrast, PPs affected the number of CFUs of M. anisopliae, independently of the persistence time of fungi on the grains. PPs and EF should be applied separately under semi-field conditions, however, further research under field conditions should be conducted to confirm the compatibility within an IPM strategy.
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