Heliothis Zea
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Larval Development and Survival of The Bollworm on Cotton.
Five larval instars of the bollworm, Heliothis zea Boddie were fed on five cotton plant parts and an artificial diet. Their effects on larval development and survival were analysed. The results showed that the highest mortality in first instar was for those placed on bolls. For the second and third instars, flowers, bolls, squares and leaves proportionated t
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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2. Oviposition and Feeding Preferences of the Bollworm on Cotton.
Oviposition and feeding preferences of the bollworm, Heliothis zea (Boddie) on cotton, Gossypium hirsutum L., cultivar ´Tamcot CAMD-E´. were studied. A highly significant number of eggs on termnal and leaves indicated clearly that bollworm moths exibit a high degree of preference for egg placement on these parts. Feeding sites for bollworm larvae were quit
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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3. Spatial Occurrence of the Bollworm Eggs, Larvae and Predators in Cotton.
Intraplant distribution of eggs, larvae and predators of the bollworm (Heliothis zea (Boddie) on cotton (Gossypium hirsutum L.) was studied in field trials during 1986 and 1987 in Oklahoma. The largest proportions of eggs were found and the main stem terminals and upper parts of the plant. The total bollworm eggs on terminal and total eggs on the whole plant
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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4. Vertical Distribution of Eggs and Larvae of the Bollworm Within the Cotton Plant.
The cotton cultivar ´Tamcot CAMD-E´, Gossypium hirsutum L., was planted in three different planting dates. Five wood-framed screen cages were used to cover 30 cotton plants during match-head squares and blooming phase for each planting date. Five female and five male bollworm moths, Heliothis zea, were released in each cage. The majority of eggs were laid
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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5. Seleção entre Progênies Endogâmicas S, Visando Resistência à Heliothis Zea em Duas Populações de Milho Opaco-2.
Efetuou-se um ciclo de seleção com base em avaliação de progênies Si nas populações de milho ESALQ-VD opaco e Píranão-VD opaco, em Jaboticabal, SP, no período de 1985188, visando resistência à lagarta-da-espiga, ~othis zea. Na avaliação da resistência foram usados os caracteres: danos causados por H. zea (DHZ) (cm); extensão da palha após a
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Artrópodos associados ao tomateiro industrial em Petrolina, PE e a racionalização do uso de defensivos agrícolas.
As principais pragas do tomateiro industrial na regiao de Petrolina, PE, sao o microacaro (Aculops Lycopersici (Massee), o acaro vermelho (Tetranychus evansi Baker & Pritchard) e as brocas dos frutos (PSeudoplusia oo (Cramer) e Heliothis zea (Bod). Os niveis populacionais mais baixos do microacaro foram atingidos quando o transplantio foi realizado de outubr
Petrolina : EMBRAPA-CPATSA. Publicado em: 2011
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7. Estudos bioecologicos de Spodoptera frugiperda (Abbot e Smith, 1797) (Lepidoptera: Noctuidae) como subsidio ao manejo integrado de pragas na cultura do milho
A lot of scientific researches has been published, along the last decades, treating with many aspects upon the fall armyworm, Spodoptera frugiperda (Abbot. &Smi th 1797) . However, little attention has done concerning new approaches of its control, principally among subtropical agroecosystem. The present study, therefore, was undertaken in order to clarify s
Publicado em: 2001
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8. Central Role of Hemocytes in Autographa californica M Nucleopolyhedrovirus Pathogenesis in Heliothis virescens and Helicoverpa zea
Autographa californica M nucleopolyhedrovirus (AcMNPV) can infect and kill a wide range of larval lepidopteran hosts, but the dosage required to achieve mortal infection varies greatly. Using a reporter gene construct, we identified key differences between AcMNPV pathogenesis in Heliothis virescens and Helicoverpa zea, a fully permissive and a semipermissive
American Society for Microbiology.
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9. α-Amanitin-Resistant Viral RNA Synthesis in Nuclei Isolated from Nuclear Polyhedrosis Virus-Infected Heliothis zea Larvae and Spodoptera frugiperda Cells
[3H]RNA was synthesized in nuclei isolated at various times postinfection from the fat bodies of Heliothis zea larvae infected with H. zea nuclear polyhedrosis virus and from cultured Spodoptera frugiperda cells infected with Autographa californica nuclear polyhedrosis virus. To detect virus-specific RNA synthesis, the [3H]RNA was hybridized to denatured vir
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10. Innervation and neural regulation of the sex pheromone gland in female Heliothis moths.
Female Heliothis moths normally produce their species-specific male attractant (sex pheromone blend) during scotophase, and this production is stimulated by pheromone biosynthesis activating neuropeptide (PBAN), presumably carried in the hemolymph. Several lines of evidence indicate that the central nervous system plays another critical role in this regulati
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11. Mass Purification of Nucleopolyhedrosis Virus Inclusion Bodies in the K-Series Centrifuge
Nucleopolyhedrosis virus inclusion bodies specific for Hemerocampa pseudotsugata, Neodiprion sertifer, Porthetria dispar, and Heliothis zea have been purified by using a continuous-sample-flow-with-isopycnic-banding centrifuge in quantities up to 6 × 1013 polyhedral inclusion bodies per day. Continuous-flow methods for S-ρ type purification have been evolv
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12. Neural regulation of sex pheromone biosynthesis in Heliothis moths
Pheromone biosynthesis in females of Heliothis zea is regulated endogenously by a neuropeptide produced in the subesophageal ganglion. We have found that the ventral nerve cord must be intact for normal induction of pheromone biosynthesis and that pheromonotropic activity is associated with extracts of the abdominal nerve cord, but only during the period whe