Serial passage of a Helicoverpa armigera nucleopolyhedrovirus in Helicoverpa zea cell cultures
Journal of Invertebrate Pathology, 1999 The serial passaging of baculoviruses in cell lines numerous times can result in a variety of mutations or defective viral populations becoming predominant in the cultures.
Chakraborty, S, Reid, S
core +6 more sources
Forecasting interannual abundance of Helicoverpa zea (Lepidoptera: Noctuidae). [PDF]
Environ EntomolAbstract Corn earworm, Helicoverpa zea Boddie (Lepidoptera: Noctuidae), is a common herbivore that causes economic damage to agronomic and specialty crops across North America. The interannual abundance of H. zea is closely linked to climactic variables that influence overwintering survival, as well as within-season host plant ...
Wallace ST +3 more
europepmc +3 more sources
Molecular identification for Helicoverpa spp. in Bt and non-Bt crops in central Argentina
Pesquisa Agropecuária Brasileira, 2022 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
Emilia Inés Balbi +3 more
doaj +1 more source
Desenvolvimento de Helicoverpa spp. em milho Bt com expressão de diferentes proteínas [PDF]
Pesquisa Agropecuária Brasileira, 2016 Resumo: O objetivo deste trabalho foi avaliar os aspectos biológicos de Helicoverpa zea e Helicoverpa armigera (Lepidoptera: Noctuidae) em híbridos de milho com expressão de diferentes proteínas.
Christiane Almeida dos Santos +7 more
doaj +2 more sources
Resistance Allele Frequency of Helicoverpa zea to Vip3Aa Bacillus thuringiensis Protein in the Southeastern U.S. [PDF]
Insects, 2023 Helicoverpa zea is a major target pest of Bt crops expressing Cry and/or Vip3Aa proteins in the U.S.A. Widespread practical resistance of H. zea to the Cry1 and Cry2 proteins makes Vip3Aa the only effective Bt protein against this pest. Understanding the
Santiago-González JC, Kerns DL, Yang F.
europepmc +2 more sources
Factors Affecting Population Dynamics of Helicoverpa zea (Lepidoptera: Noctuidae) in a Mixed Landscape with Bt Cotton and Peanut. [PDF]
Insects, 2023 In North America, weather and host-plant abundance drive the population dynamics of the migratory pest Helicoverpa zea. The objectives of this study were to (i) estimate monthly abundance of H.
Santos IBD +5 more
europepmc +2 more sources
Early Warning of Resistance to Bt Toxin Vip3Aa in Helicoverpa zea. [PDF]
Toxins (Basel), 2021 Evolution of resistance by pests can reduce the benefits of crops genetically engineered to produce insecticidal proteins from Bacillus thuringiensis (Bt). Because of the widespread resistance of Helicoverpa zea to crystalline (Cry) Bt toxins in the United States, the vegetative insecticidal protein Vip3Aa is the only Bt toxin produced by Bt corn and ...
Yang F +4 more
europepmc +5 more sources
Resistance of Hibiscus x moscheutos L. to biostressors in the south of Russia [PDF]
BIO Web of Conferences, 2022 16 varieties and 2 hybrid forms of Hibiscus x moscheutos L. have been studied for adaptability to biostressors. It was found that in the conditions of the south of Russia, root rot is most often found from pathogens (Fusarium equiseti (Corda) Sacc ...
Tyshchenko Evgenia +2 more
doaj +1 more source
Climate change, transgenic corn adoption and field-evolved resistance in corn earworm [PDF]
Royal Society Open Science, 2017 Increased temperature anomaly during the twenty-first century coincides with the proliferation of transgenic crops containing the bacterium Bacillus thuringiensis (Berliner) (Bt) to express insecticidal Cry proteins.
P. Dilip Venugopal, Galen P. Dively
doaj +1 more source
Challenging the long-held "pied piper" hypothesis: evidence of southward migration of corn earworm (<i>Helicoverpa zea</i>) in North America. [PDF]
Front Insect SciMigration plays an important role in the ecology of insect pests, including Helicoverpa zea, a major pest of multiple crops across the U.S. The long-standing “pied piper” hypothesis proposes that H.
Twaibu AA +4 more
europepmc +2 more sources