Results 81 to 90 of about 99,054 (160)

Occurrence and Ear Damage of Helicoverpa zea on Transgenic Bacillus thuringiensis Maize in the Field in Texas, U.S. and Its Susceptibility to Vip3A Protein

open access: yesToxins, 2019
The corn earworm, Helicoverpa zea (Boddie), is a major pest of Bacillus thuringiensis (Bt) maize and cotton in the U.S. Reduced efficacy of Bt plants expressing Cry1 and Cry2 against H. zea has been reported in some areas of the U.S.
Fei Yang   +5 more
doaj   +1 more source

Wild and cultivated host plants of Helicoverpa zea (Boddie) and Heliothis virescens (Fabricius) in eastern Tennessee [PDF]

open access: yes, 1991
Helicoverpa zea and Heliothis virescens are important crop pests. Both species are multivoltine and polyphagous enabling them to overlap cropping periods on wild host plants.
Sudbrink, Donald L.
core  

Comparison of biology between Helicoverpa zea and Helicoverpa armigera (Lepidoptera: Noctuidae) reared on artificial diets. [PDF]

open access: yes, 2016
The objective of this study was to compare growth and development of Helicoverpa zea Boddie and Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) larvae that were feeding on an artificial diet. Neonate larvae of H. zea and H.
RODRIGUES, G. T.   +6 more
core   +1 more source

Two species into one: bottleneck history of Helicoverpa zea from Helicoverpa armigera revealed by DNA barcoding

open access: yes
The use of mitochondrial DNA Cytochrome Oxidase I (mtDNA COI) gene in species identification has gained popularity in recent years, with its effectiveness in identifying cryptic and new species demonstrated in birds and Lepidoptera.
Tay, Wee Tek   +3 more
core   +6 more sources

Efficient Refuge policies for Bt cotton in India [PDF]

open access: yes
This study examined the efficient refuge policies for Bt cotton for three cotton growing regions in India. This was accomplished by developing a single-pest, dual-toxin biological model simulating bollworm resistance to the Bt toxin and synthetic ...
Singla, Rohit   +2 more
core  

Helicoverpa zea Transcriptome or Gene expression

open access: yes, 2014
The scope of this project is to identify genes expressed during the embryonic development of corn earworm, Helicoverpa ...
USDA-ARS (17854919)
core  

Larval Helicoverpa zea Transcriptional, Growth and Behavioral Responses to Nicotine and Nicotiana tabacum

open access: yesInsects, 2014
The polyphagous feeding habits of the corn earworm, Helicoverpa zea (Boddie), underscore its status as a major agricultural pest with a wide geographic distribution and host plant repertoire.
Linus Gog   +4 more
doaj   +1 more source

New cell lines from Ephestia kuehniella: Characterization and susceptibility to baculoviruses

open access: yesJournal of Insect Science, 2004
New cell lines from embryos of Ephestia kuehniella were recently developed. Primary cultures were initiated in September 2002 from 2 to 4 day old eggs in either modified TC-100 or Ex-Cell 400 medium.
Dwight E. Lynn, Stephen M. Ferkovich
doaj  

Investigating Helicoverpa zea-Helicoverpa armigera moth hybridization using broad scale genomic approaches and admixture analysis

open access: yes
The New World bollworm (Helicoverpa zea, Lepidoptera: Noctuidae) and the Old-World bollworm (Helicoverpa armigera, Lepidoptera: Noctuidae) are significant global pests of agriculture.
Sándor Keszthelyi   +6 more
core   +1 more source

Functional assessment of cadherin as a shared mechanism for cross/dual resistance to Cry1Ac and Cry2Ab in Helicoverpa zea

open access: yesJournal of Integrative Agriculture
Helicoverpa zea is a major target pest of pyramided transgenic crops expressing Cry1, Cry2 and/or Vip3Aa proteins from Bacillus thuringiensis (Bt) in the United States.
Jizhen Wei   +6 more
doaj   +1 more source

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