|Table of Contents|

Study on Fitness of Beauveria bassiana Strain Bb170428 With 12 Low-toxic Insecticides

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年18
Page:
29-36
Research Field:
Publishing date:

Info

Title:
Study on Fitness of Beauveria bassiana Strain Bb170428 With 12 Low-toxic Insecticides
Author(s):
REN Zhongjie; WANG Yu; PEI Haiying; YU Hongchun
(College of Agriculture，Northeast Agricultural University，Harbin，Heilongjiang 150030)
Keywords:
Beauveria bassiana; low-toxic pesticide; mixing; fitness
PACS:
-
DOI:
10.11937/bfyy.20221114
Abstract:
Taking 12 new low-toxic insecticides as test materials and Beauveria bassiana Bb170428 as test strain，the effects of new low-toxic insecticides on Beauveria bassiana Bb170428 were evaluated by measuring spore germination，colony growth diameter and spore yield on the plate，so as to clarify the fitness of the mixture of insecticides and Beauveria bassiana，in order to provide reference for the rational mixture of Beauveria bassiana and insecticides.The results showed that lufenuron and spinetoram had no significant effect on spore germination of strain Bb170428，while afidopyropen，indoxacarb，chlorantranili-prole and lufenuron had little effect on spore germination，colony growth and spore yield，while spirotetramat?thiacloprid had the greatest effect.When Beauveria bassiana and insecticides were mixed for 0 day，indoxacarb and afidopyropen at the recommended dilution of 3 times and 9 times，and lufenuron，chlorantranili-prole，spinetoram，emamectin benzoate and hexaflumuron at the recommended dilution of 9 times had no obvious inhibitory effect on spore germination，colony growth and spore yield.Mixing Beauveria bassiana and insecticides for 1 day，afidopyropen at the recommended dilution of 3 times and 9 times,chlorantranili-prole at the recommended dilution of 9 times had no significant effect on the strains.Mixing Beauveria bassiana and insecticides for 3 days，chlorantranili-prole at the recommended dilution of 9 times had no significant effect on the strains.In summary，the concentration of pesticides and the mixing time of Beauveria bassiana and pesticides could affect the spore germination，colony growth rate and spore yield of strain Bb170428.With the increase of concentration and mixing time，most insecticides increased the inhibition of spore germination rate，colony growth and spore yield，and the fitness of Beauveria bassiana and insecticides decreased.However，there were great differences among different insecticides.

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Last Update: 2022-11-23