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首页> 外文期刊>Tropical Science >Relative pathogenicity of different entomopathogenic fungi to Sitotroga cerealella in stored sorghum.
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Relative pathogenicity of different entomopathogenic fungi to Sitotroga cerealella in stored sorghum.

机译：贮藏高粱中不同昆虫病原真菌对谷类烟草的致病力。

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摘要

The pathogenicity of three isolates of Metarhizium anisopliae, three of Beauveria bassiana and one of Nomuraea rileyi to adult Sitotroga cerealella was evaluated in the laboratory. All the isolates were pathogenic to the moth at three concentrationsof conidia but pathogenicity varied. The most pathogenic isolates were M. anisopliae CPD 6 (89-100% mortality) followed by M. anisopliae CPD 5 (42-94%), B. bassiana CPD 3 (48-96%) and N. rileyi CPD 1 (33-95%) at 7 days after treatment. The mortalities caused by all these isolates at the highest concentration of 2.6 x 109 conidia 50 g-1 of sorghum did not differ significantly from mortality caused by pirimiphos-methyl at 10 ppm. At the same concentration of conidia, M. anisopliae CPD 6 had a more rapidaction than the other isolates with an LT50 of 2.1 days at 7 days after treatment. All isolates reduced the number of F1 progeny of S. cerealella.
机译：在实验室中，评估了三种分离的异化假单胞菌，三种球孢白僵菌和一种野蔷薇对成年种麦粉的致病性。在三个分生孢子浓度下，所有分离株均对蛾有致病性，但致病性却有所不同。致病性最高的分离株是分枝杆菌CPD 6（死亡率89-100％），其次是分枝杆菌CPD 5（42-94％），球芽孢杆菌CPD 3（48-96％）和里氏猪笼草CPD 1（33 -95％）在治疗后7天。所有这些分离物在最高浓度为2.6 x 109分生孢子50 g-1的高粱中所致的死亡率与在10 ppm时的甲基吡咯磷磷所致的死亡率没有显着差异。在分生孢子浓度相同的情况下，M。anisopliae CPD 6在处理后7天的LT50为2.1天时比其他分离物具有更快的反应性。所有分离株均减少了谷类链球菌F1后代的数量。

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