Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil

Authors

  • Carlos Alberto Domingues da Silva

DOI:

https://doi.org/10.1590/S1678-3921.pab2001.v36.6125

Keywords:

Anthonomus grandis, cotton, pathogens, pathogenicity, pests of plants

Abstract

The objective of this work was to screen pathogenic isolates of Beauveria bassiana (Balsamo) Vüillemin from different hosts and geographic regions, pathogenic to the cotton boll weevil. Twelve isolates were evaluated. Isolates originally obtained from boll weevil showed low pathogenicity against this host. Insect mortality began on the second day after inoculation by fungal suspension, ranging from 15% to 83%, with a TL50 of 5.30 to 11.06 days. Variability among isolates concerning conidial germination in artificial culture medium was verified, and TG50 did not correlate with pathogenicity. One of the most virulent isolates of B. bassiana against cotton boll weevil is CG138.

Published

2001-02-01

How to Cite

Silva, C. A. D. da. (2001). Selection of isolates of <i>Beauveria bassiana</i> pathogenic to cotton boll weevil. Pesquisa Agropecuaria Brasileira, 36(2), 243–247. https://doi.org/10.1590/S1678-3921.pab2001.v36.6125

Issue

Section

ENTOMOLOGY