Landscape-level variation in Bt crops predict Helicoverpa zea (Lepidoptera: Noctuidae) resistance in cotton agroecosystems.
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DOI: 10.1002/ps.6585
Abstract: BACKGROUND Helicoverpa zea (Boddie) damage to Bt cotton and maize has increased due to widespread Bt resistance across the USA Cotton Belt. Our objective was to link Bt crop production patterns to cotton damage through… read more here.
Keywords: zea damage; helicoverpa zea; resistance; damage ... See more keywords
Helicoverpa zea (Lepidoptera: Noctuidae) feeding incidence and survival on Bt maize in relation to maize in the landscape.
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DOI: 10.1002/ps.6855
Abstract: Characterizing Helicoverpa zea (Boddie) damage to maize (Zea mays L.) in relation to the spatiotemporal composition of Bt crops is essential to understand how landscape composition affects H. zea abundance. To examine this relationship, paired… read more here.
Keywords: damage; helicoverpa zea; abundance; landscape ... See more keywords
Practical resistance to Cry toxins and efficacy of Vip3Aa in Bt cotton against Helicoverpa zea.
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DOI: 10.1002/ps.7142
Abstract: BACKGROUND Crops genetically engineered to make insect-killing proteins from Bacillus thuringiensis (Bt) have revolutionized management of some pests. However, the benefits of such transgenic crops are reduced when pests evolve resistance to Bt toxins. We… read more here.
Keywords: helicoverpa zea; cotton; cry toxins; resistance ... See more keywords
Impact of Seed Blend and Structured Maize Refuge on Helicoverpa zea (Lepidoptera: Noctuidae) Potential Phenological Resistance Development Parameters in Pupae and Adults.
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DOI: 10.1002/ps.7529
Abstract: Helicoverpa zea, an economic pest in the southeastern U.S., has evolved practical resistance to Bt Cry toxins in maize and cotton. Insect resistance management (IRM) programs have historically required planting of structured non-Bt maize, but… read more here.
Keywords: refuge; development; resistance; seed ... See more keywords
Spontaneous transposition of HzSINE1 into CYP321A2 is undetectable in the field populations of Helicoverpa zea
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DOI: 10.1016/j.aspen.2021.07.015
Abstract: Abstract The enrichment of transposable elements (TEs) within allelochemical- and insecticide-metabolizing P450 alleles in Helicoverpa zea enables these P450s to gain TE-introduced adaptive variations otherwise not readily available to cope with the ever-changing and diverse… read more here.
Keywords: field; helicoverpa zea; hzsine1 inserted; cyp321a2 ... See more keywords
Comparison of the flavonoid profile of corn silks to select efficient varieties as trap plant for Helicoverpa Zea.
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DOI: 10.1021/acs.jafc.0c01462
Abstract: In Martinique Helicoverpa Zea is a common pest of tomato responsible for significant economic losses. To fight against H. zea proliferation and damages corn could be used as a trap crop since H. zea larvae… read more here.
Keywords: corn; helicoverpa zea; trap plant; zea ... See more keywords
Helicoverpa zea (Lepidoptera: Noctuidae) In-Season and Overwintering Pupation Response to Soil Type
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DOI: 10.1093/ee/nvac106
Abstract: Abstract Heliothinae soil pupation is understudied despite the key role this life stage plays in their development. Many Heliothinae are important agricultural pests and understanding the interplay of environment and pupation is important to optimize… read more here.
Keywords: textured clay; season; fine textured; pupation ... See more keywords
Susceptibilities of Helicoverpa zea (Lepidoptera: Noctuidae) Populations From the Mississippi Delta to a Diamide Insecticide
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DOI: 10.1093/jee/toac180
Abstract: Abstract The corn earworm, Helicoverpa zea (Boddie), is a major pest of row crops in the Southern United States. Control of this insect is dependent on preventative insecticidal transgenic crops and synthetic insecticide applications when… read more here.
Keywords: lepidoptera noctuidae; zea lepidoptera; insecticide; mississippi delta ... See more keywords
A Modified F2 Screen for Estimating Cry1Ac and Cry2Ab Resistance Allele Frequencies in Helicoverpa zea (Lepidoptera: Noctuidae)
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DOI: 10.1093/jee/toac181
Abstract: Abstract Evaluating the frequency of resistance alleles is important for resistance management and sustainable use of transgenic crops that produce insecticidal proteins from Bacillus thuringiensis. Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) is a major crop pest… read more here.
Keywords: resistance allele; lepidoptera noctuidae; resistance; helicoverpa zea ... See more keywords
Comparative Toxicity of Helicoverpa armigera and Helicoverpa zea (Lepidoptera: Noctuidae) to Selected Insecticides
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DOI: 10.3390/insects11070431
Abstract: Until recently, the Old World bollworm (OWB) Helicoverpa armigera (Hübner) and the corn earworm Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) were geographically isolated. Both species are major pests of agricultural commodities that are known to develop… read more here.
Keywords: helicoverpa armigera; helicoverpa; helicoverpa zea; armigera ... See more keywords
Temporal Variation in Genetic Composition of Migratory Helicoverpa Zea in Peripheral Populations
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DOI: 10.3390/insects11080463
Abstract: Migrant populations of Helicoverpa zea (Boddie) captured during 2002, 2005, 2016, and 2018 from Landisville and Rock Springs in Pennsylvania, USA were genotyped using 85 single nucleotide polymorphism (SNP) markers. Samples (n = 702) genotyped… read more here.
Keywords: putative populations; temporal variation; peripheral populations; helicoverpa zea ... See more keywords