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Molecular identification for Helicoverpa spp. in Bt and non- Bt crops in central Argentina

The objective of this work was to identify, by molecular analysis, the species of the genus Helicoverpa in corn, soybean, and lucerne Bt and non-Bt crops, in central Argentina. A total of 1,343 carterpillars were analyzed by PCR-RFLP. Helicoverpa zea was the only species detected on non-Bt and on mo...

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Main Authors: Balbi, Emilia Ines, Flores, Fernando Miguel, Tosto, Daniela Sandra, Arneodo Larochette, Joel Demian
Format: info:ar-repo/semantics/artículo
Language:Inglés
Published: Embrapa Secretaria de Pesquisa e Desenvolvimento 2022
Subjects:
Helicoverpa zea
Helicoverpa armigera
PCR
Control Biológico
RFLP
Argentina
Biological Control
Restriction Fragment Length Polymorphism
Helicoverpa gelotopoeon
Online Access:http://hdl.handle.net/20.500.12123/12261
https://www.scielo.br/j/pab/a/yJWqGg7F6bXWZdMYn7S4NWN/
https://doi.org/10.1590/S1678-3921.pab2022.v57.02317
Summary:The objective of this work was to identify, by molecular analysis, the species of the genus Helicoverpa in corn, soybean, and lucerne Bt and non-Bt crops, in central Argentina. A total of 1,343 carterpillars were analyzed by PCR-RFLP. Helicoverpa zea was the only species detected on non-Bt and on most Bt corn hybrids. The species H. gelotopoeon predominated on non-Bt soybean and on lucerne, and H. zea larvae occurred in low proportion. Bt soybean did not show Helicoverpa spp. infestations. The exotic H. armigera was not found, though adult moths of this species were light-trapped in a complementary sampling.

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