Results 41 to 50 of about 13,533 (233)

How does leaf age affect performance? A comparative study of essential oils from young and mature Eucalyptus globulus leaves in crop protection

Pest Management Science, EarlyView.
Leaf age influences metabolomic profiling but not bioactivity of Eucalyptus globulus essential oils. Leaf age affects volatile levels of young and adult E. globulus oils, but not their bioactivity. Young leaf essential oil had higher contents of α‐ and β‐pinene. AEEO had higher levels of 1,8‐cineole and trans‐pinocarveol.
Mafalda Pinto, Cristiano Soares, Ana Cristina Figueiredo, Joana Neto, Pedro A S Sousa, Ana A R M Aguiar, Michele Narduzzi, Chiara Antonelli, Anna Maria Vettraino, Tatiana Andreani, Fernando Tavares, Fernanda Fidalgo   +11 more
wiley   +1 more source

Manejo inrtegrado da (Helicoverpa armigera) na cultura do milho (Zea mays) na região de Curitibanos – SC [PDF]

, 2013
Projeto acadêmico (graduação) - Universidade Federal de Santa Catarina. Campus Curitibanos. Ciências Rurais.O Brasil vive um momento crescente no setor agropecuário, mas estas perspectivas crescentes de produção podem ser comprometidas em decorrência dos
Tiburski, Lucas
core  

ANTIBIOSIS AND ANTIXENOSIS IN TOMATO GENOTYPES AGAINST Helicoverpa armigera HUBNER

Tropical and Subtropical Agroecosystems
Background. Farmers rely on the use of synthetic insecticides in managing Helicoverpa armigera, hole-boring insect pest on tomato, but they are detrimental to human health.
Folorunso Dotun Omotoso, Olajumoke Yemisi Alabi, Mobolade D. Akinbuluma, Olajumoke Oke Fayinminnu   +3 more
doaj   +1 more source

Fitness costs associated with Vip3Aa resistance on various hosts in Helicoverpa zea

Pest Management Science, EarlyView.
Significant fitness costs associated with Vip3Aa resistance in H. zea were observed across three non‐Bt hosts. Abundant non‐Bt refuges could help limit the spread of Vip3Aa resistance in H. zea in the field. Abstract BACKGROUND Transgenic crops containing Bacillus thuringiensis (Bt) proteins are crucial for managing major agricultural pests such as the
Haley Kennedy, David L Kerns, Graham P Head, Fei Yang   +3 more
wiley   +1 more source

Effect of pyramiding Bt and CpTI genes on resistance of cotton to Helicoverpa armigera (Lepidoptera: Noctuidae) under laboratory and field conditions

, 2011
Transgenic cotton (Gossypium hirsutum L.) varieties, adapted to China, have been bred that express two genes for resistance to insects. the Cry1Ac gene from Bacillus thuringiensis (Berliner) (Bt), and a trypsin inhibitor gene from cowpea (CpTI ...
Xia, J.Y., Cui, J.J., Werf, W., van der, Luo, J.Y., Ma, Y., van der Werf, W.   +5 more
core   +1 more source

A Renewed Appreciation of Helicoverpa armigera Nucleopolyhedrovirus BJ (Formerly Helicoverpa assulta Nucleopolyhedrovirus) with Whole Genome Sequencing

Viruses, 2022
Helicoverpa assulta is a pest that causes severe damage to tobacco, pepper and other cash crops. A local strain of HearNPV-BJ (formerly Helicoverpa assulta nucleopolyhedrovirus (HeasNPV-DJ0031)) was isolated from infected H.
Lulu Zhao, Xingjian Liu, Kai Tang, Zhifang Zhang, Huan Zhang, Yinü Li   +5 more
doaj   +1 more source

Virus morphogenesis of Helicoverpa armigera nucleopolyhedrovirus in Helicoverpa zea serum-free suspension culture

Journal of General Virology, 2000
Helicoverpa armigera single nucleopolyhedrovirus (HaSNPV) replication in Helicoverpa zea serum-free suspension culture was studied in detail and the sequence of virus morphogenesis was determined by transmission electron microscopy.
Lua, L. H. L., Reid, S.
openaire   +5 more sources

Chitosan‐protected dsRNA increases efficacy against Helicoverpa armigera without compromising biosafety for pollinators

Pest Management Science, EarlyView.
Chitosan/tripolyphosphate/double‐stranded RNA (dsRNA) nanoparticles enhance RNA interference efficacy of orally delivered dsRNA against Helicoverpa armigera. Nanoparticles reduce the LC50 and do not cause deleterious effects or toxicity on beneficial insects.
Daniel DN Vasquez, Lays A Teixeira, Rangel F Alves, Raire Cavalcante, Leonardo LP Macedo, Carmen SS Pires, Luciano P Silva, Maria CM Silva, Feras M Afifi, Carolina V Morgante, Martin G Edwards, Angharad MR Gatehouse, Maria F Grossi‐de‐Sa   +12 more
wiley   +1 more source

Experience-based behavioral and chemosensory changes in the generalist insect herbivore Helicoverpa armigera exposed to two deterrent plant chemicals [PDF]

, 2010
Behavioral and electrophysiological responses of larvae of the polyphagous moth species Helicoverpa armigera to two plant-derived allelochemicals were studied, both in larvae that had been reared on a diet devoid of these compounds and in larvae ...
Chen-Zhu Wang, Zhou, D., Loon, J.J.A., van, van Loon, J.J.A., Joop J. A. van Loon, Wang, C.Z., Dongsheng Zhou   +6 more
core   +1 more source

Characterization of ORF127 of Helicoverpa armigera nucleopolyhedrovirus

Acta Virologica, 2009
It has been shown that Ha127 in the genome of Helicoverpa armigera nucleopolyhedrovirus (HaNPV) has homologs in some other baculoviruses and encodes a putative protein of 192 aa. In this study, a sequence analysis showed the transcription initiation site in Ha127 gene at nts 188 upstream of the translation initiation codon ATG and a potential leucine ...
Z J, Guo, L H, Qiu, M F, Du, S H, An
openaire   +3 more sources