Results 11 to 20 of about 3,316 (209)

Resposta de cultivares de trigo à infestação do pulgão Rhopalosiphum padi Wheat cultivars response to Rhopalosiphum padi infestation [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2007
O objetivo deste trabalho foi avaliar a resposta de oito cultivares comerciais de trigo (BRS 194, BRS 208, BRS Camboatá, BRS Guabiju, BRS Guamirim, BRS Louro, BRS Timbaúva e BRS Umbu) à infestação do pulgão Rhopalosiphum padi (Hemiptera: Aphididae).
Rafael Peruzzo   +4 more
doaj   +4 more sources

A note on current pyrethroid susceptibility in the bird cherry-oat aphid Rhopalosiphum padi in Ireland [PDF]

open access: yesIrish Journal of Agricultural and Food Research, 2022
The objective of this study was to observe the response of the bird cherry oat aphid, Rhopalosiphum padi (Linnaeus, 1758) to field rate equivalents of insecticides, by using bioassays of vials coated with the pyrethroid, λ-cyhalothrin.
A. George   +7 more
doaj   +3 more sources

Rhopalosiphum padi [PDF]

open access: yes, 2023
38. Rhopalosiphum padi (Linnaeus) First record from Armenia: Tumanyan (1944). Distribution in Armenia: Tavush, Lori, Kotayk, Gegharkunik, Syunik provinces, Ararat plain (Ter-Grigoryan 1944; Tumanyan 1944, 1961, 1976; Harutyunyan 1972; Matinyan 1983; Babayan 2022).
Stepanyan, Ilona   +3 more
core   +4 more sources

Sublethal effects of imidacloprid on the fitness of two species of wheat aphids, Schizaphis graminum (R.) and Rhopalosiphum padi (L.). [PDF]

open access: yesPLoS ONE, 2023
Imidacloprid is a neonicotinoid insecticide that efficiently controls piercing-sucking mouthparts pests. However, the impact of low lethal concentration of imidacloprid on key demographic parameters of wheat aphids, Schizaphis graminum (R.) and ...
Xiang Ji   +6 more
doaj   +2 more sources

Characterization of glutamine synthetase involved in the fecundity of Rhopalosiphum padi. [PDF]

open access: yesSci Rep
Abstract Glutamine synthetase (GS) is a pivotal enzyme crucial for the synthesis of glutamine (Gln), an important precursor in amino acid biosynthesis, essential for the growth, development, and reproduction of insects through its involvement in nitrogen metabolism. Despite its recognized significance in insect biology, the specific functions
Li XY, Wang JQ, Zheng KW, Li YT.
europepmc   +3 more sources

Asexual reproduction of a few genotypes favored the invasion of the cereal aphid Rhopalosiphum padi in Chile [PDF]

open access: yesPeerJ, 2019
Background Aphids (Hemiptera: Aphididae) are insects with one of the highest potentials for invasion. Several aphid species are present globally due to introduction events; they represent important pests of agroecosystems.
María E. Rubio-Meléndez   +4 more
doaj   +3 more sources

Sustainable control of the bird cherry-oat aphid (Rhopalosiphum padi L.) in northwestern Ontario using Beauveria bassiana delivered by bumblebees [PDF]

open access: yesFrontiers in Insect Science
Rhopalosiphum padi is one of the main vectors of barley yellow dwarf virus (BYDV), which affects the grain yield of oats. Several biological control strategies have been studied to control this pest, one of which is Bee Vectoring Technology (BVT) using ...
Jean Pierre Kapongo   +8 more
doaj   +2 more sources

Flight behaviour of the bird cherry aphid, Rhopalosiphum padi [PDF]

open access: yesPhysiological Entomology, 1991
Abstract Seasonal winged forms of the bird cherry aphid, Rhopalosiphum padi L., were flown in an automated flight chamber. During their maiden flights, autumn migrants (gynoparae) had a greater initial rate of climb than summer (exules) and spring migrants (emigrants ...
Nottingham, S. F.   +2 more
openaire   +2 more sources

Selection and Validation of Reference Genes For qRT-PCR Analysis of Rhopalosiphum padi (Hemiptera: Aphididae) [PDF]

open access: yesFrontiers in Physiology, 2021
Rhopalosiphum padi (L.) (Hemiptera: Aphididae) is an important cosmopolitan pest in cereal crops. Reference genes can significantly affect qRT-PCR results. Therefore, selecting appropriate reference genes is a key prerequisite for qRT-PCR analyses.
Mengyi Li   +16 more
doaj   +2 more sources

Date-Sublethal effects of COS on Rhopalosiphum padi [PDF]

open access: yes, 2023
A sublethal concentration of chitosan oligosaccharide suppresses the population growth of the wheat aphid, Rhopalosiphum padi (Linnaeus)
Li Xinan (15293410)
openaire   +2 more sources

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