球孢白僵菌、秘鲁白僵菌和绿僵菌对汉氏拟虫的体外生物活性研究

IF 1.5 Q2 AGRONOMY
Beimer Chuquibala-Checan, Magdiel Torres-de la Cruz, Santos Leiva, Elgar Hernandez-Diaz, Karol Rubio, Malluri Goñas, Marielita Arce-Inga, Manuel Oliva-Cruz
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引用次数: 0

摘要

咖啡(Coffea arabica)是秘鲁的主要商品,是成千上万小农的经济支柱。然而,咖啡生产受到咖啡浆果蛀虫(hampei)的影响。目前,hampei是秘鲁整个咖啡种植区最重要的害虫。本研究通过两种不同时间的试验,评价了球孢白僵菌、秘鲁白僵菌和绿僵菌对汉贝次肠杆菌的体外生物活性。在1 × 105、1 × 107和1 × 109分生孢子/mL−1的浓度下,研究了分生孢子产量、分生孢子活力和对汉蓓病原菌的致病性。并计算致死时间(LT50、LT90)和致死浓度(LC50、LC90)。分生孢子产量差异显著(P <0.001)和分生孢子活力(P <0.041)。球孢白僵菌和秘鲁白僵菌的分生孢子产量最高,分生孢子活力最高。同样,两种试验中菌株的致病性也存在差异(试验1:P <0.0009和检验2:P <0.0001)。以球孢白僵菌1 × 109分生孢子/mL - 1、球孢白僵菌1 × 107分生孢子/mL - 1和秘鲁白僵菌1 × 109分生孢子/mL - 1处理死亡率最高。LT50和LT90较低的处理分别为球孢白僵菌1 × 109分生孢子/mL−1和秘鲁芽孢白僵菌1 × 109分生孢子/mL−1,LC50和LC90最低的处理分别为秘鲁芽孢白僵菌和球孢白僵菌。球孢白僵菌和秘鲁白僵菌条件所显示的离体特征表明,应在田间对它们进行评估,以确定这些菌株减少汉贝氏僵菌种群的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
In Vitro Biological Activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei (Coleoptera: Curculionidae)
Coffee (Coffea arabica) is the main commodity in Peru and is the economic support for thousands of small farmers. However, coffee production is affected by the coffee berry borer (Hypothenemus hampei). Currently, H. hampei is the most important pest in whole coffee-growing regions in Peru. This study aimed to evaluate in vitro biological activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei in two trials at different times. Conidia production, Conidia viability, and pathogenicity against H. hampei were evaluated at three concentrations (1 × 105, 1 × 107, and 1 × 109 conidia/mL−1). In addition, lethal times (LT50 and LT90) and lethal concentrations (LC50 and LC90) were calculated. There were significant differences in conidia production ( P < 0.001) and conidia viability ( P < 0.041). The highest conidia production and conidia viability were reached by B. bassiana and B. peruviensis, respectively. Likewise, there were differences in the pathogenicity of the strains in the two tests carried out (test 1: P < 0.0009 and test 2: P < 0.0001). The highest mortality occurred in the treatments of B. bassiana 1 × 109 conidia/mL−1, B. bassiana 1 × 107 conidia/mL−1, and B. peruviensis 1 × 109 conidia/mL−1. The treatments with lower LT50 and LT90 were B. bassiana 1 × 109 conidia/mL−1 and B. peruviensis 1 × 109 conidia/mL−1, and the strains with the lowest LC50 and LC90 were B. peruviensis and B. bassiana. The in vitro characteristics shown by B. bassiana and B. peruviensis conditions suggest they should be evaluated in the field to determine the capability of these strains to reduce populations of H. hampei.
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来源期刊
CiteScore
3.60
自引率
5.30%
发文量
66
审稿时长
16 weeks
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