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首页> 外文期刊>Plant Protection Science >Pathogenicity of Beauveria bassiana Strain 202 against Sap-sucking Insect Pests
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Pathogenicity of Beauveria bassiana Strain 202 against Sap-sucking Insect Pests

机译：Beauveria Bassiana菌株202对吸吮虫害虫害的致病性

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摘要

An experimental trial was conducted to determine the pathogenicity of Beauveria bassiana strain 202 (Bb-202) against multiple targeted sucking insect species that are serious pests of crops and ornamental plants. The insect species, Myzus persicae Sulzer (Hemiptera: Aphididae), Jacobiasca formosana Paoli (Hemiptera: Cicadellidae), Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), and Stephanitis nashi (Hemiptera: Tingidae) were exposed to conidia of B. bassiana at rates of 1.0 x 10(2), 3.5 x 10(3), 5 x 10(4), and 6.75 x 10(5) conidia/mm(2) to determine the pathogenicity of B. bassiana. The fungal strain Bb-202 showed the highest pathogenicity to M. persicae and 100% corrected mortality observed in the treatments over 1.0 x 10(2) conidia/mm(2), followed by the J. formosana with the final corrected mortality of 86.6, 94.4, and 97.4% after 10 days of fungal inoculation with 3.5 x 10(3), 5 x 10(4), and 6.75 x 10(5) conidia/mm(2), respectively. The strain Bb-202 also showed good pathogenicity to B. tabaci and corrected mortalities of 77.9 and 81.1% were recorded when exposed to 5 x 10(4) and 6.75 x 10(5) conidia/mm(2). Relatively weak pathogenicity was observed in S. nashi, in which the highest corrected mortality of 63.7% occurred at 6.75 x 10(5) conidia/mm(2). Accordingly, the LC50 and LT50 values of concentrations 1 x 10(5), 1 x 10(6), 1 x 10(7), and 1 x 10(8) conidia/ml were calculated for M. persicae, J. formosana, B. tabaci, and S. nashi that were determined as 6.7 x 10(4), 1.3 x 10(6), 3.6 x 10(6), and 1.2 x 10(7) conidia/ml and LT50 was observed as 5.2 similar to 8.24, 5.1 similar to 6.6, 7.2 similar to 9.0, and 7.9 similar to 9.6 in days, respectively.
机译：进行了实验试验以确定Beauveria Bassiana菌株202（BB-202）对多目标吸吮昆虫物种的致病性，这是严重的作物和观赏植物。昆虫物种，Myzus persicae苏尔寿（血针：蚜虫），jacobiasca formosana paoli（hemiptera：cicadellidae），Bemisia tabaci Gennadius（Hemiptera：Aleyrodidae）和斯蒂赤藓炎（Hemiptera：Tingidae）暴露于B.Bassiana的Conidia 1.0×10（2），3.5×10（3），5×10（4）和6.75×10（5）分析/ mm（2），以确定B.Bassiana的致病性。真菌菌株BB-202显示出对M. Persicae的最高致病性，并且在0×10（2）个分析蛋白/ mm（2）的治疗中观察到的100％矫正死亡率，然后是J. Formosana，最终纠正的死亡率为86.6 94.4，94.4和97.4％在真菌接种后10天，分别为3.5×10（3），5×10（4）和6.75×10（5）分析/ mm（2）。菌株BB-202还显示出Babaci的良好致病性，并且在暴露于5×10（4）和6.75×10（5）分析/ mm（2）时，记录77.9和81.1％的校正死亡率。在纳什观察到相对较弱的致病性，其中最高的校正死亡率为63.7％，发生在6.75×10（5）分析/ mm（2）。因此，对M.Spericae，J. Formosana计算了LC50和LT50浓度的浓度1×10（5），1×10（6），1×10（7）和1×10（8）分属植物/ mL的值。 ，B. tabaci和S. Nashi确定为6.7×10（4），1.3×10（6），3.6×10（6）和1.2×10（7）分析蛋白/ ml，LT50为5.2类似于8.24,5.1，类似于6.6,7.2，同样与9.0和7.9类似，分别为9.6天内。

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