نتایج جستجو برای: days myzus persicae

تعداد نتایج: 351781  

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2008
Dulce M Domínguez Matías Reina Luis Villarroel Victor Fajardo Azucena González-Coloma

The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antife...

Journal: :Bioscience, biotechnology, and biochemistry 2002
Mitsuru Ito Hideshi Okui Harumi Nakagawa Shigeru Mio Ayako Kinoshita Takashi Obayashi Takako Miura Junko Nagai Shinji Yokoi Reiji Ichinose Keiji Tanaka Seiichiro Kodama Toshiaki Iwasaki Takaaki Miyake Miho Takashio Jun Iwabuchi

A new series of N-oxydihydropyrrole derivatives was synthesized and evaluated for insecticidal activity against Nilaparvata lugens and Myzus persicae. Various substituents were introduced to the 1-position of the dihydropyrrole ring, and the derivatives obtained exhibited systemic and/or contact insecticidal activity. The structure-activity relationship revealed that small alkyoxy and alkoxyalk...

2007
ELIZABETH BLÉE PATRICK DU

Oxylipins are oxygenated fatty acids and their derivatives that play key roles in response to stress. They are widespread in many organisms including mammals or plants but are unknown in arthropods. In this study, we identified oxylipins in Myzys persicae Sulzer aphids reared on Vicia faba L. plants. Further experiments based on: (i) Radiolabelled substrate incubation with aphid extracts, and (...

2010
Alin M. Puinean Stephen P. Foster Linda Oliphant Ian Denholm Linda M. Field Neil S. Millar Martin S. Williamson Chris Bass

The aphid Myzus persicae is a globally significant crop pest that has evolved high levels of resistance to almost all classes of insecticide. To date, the neonicotinoids, an economically important class of insecticides that target nicotinic acetylcholine receptors (nAChRs), have remained an effective control measure; however, recent reports of resistance in M. persicae represent a threat to the...

Journal: :EntomoBrasilis 2021

Radish is a short cycle horticultural product from family Brassicaceae. Between the insects found on radish leaves, potato green aphid (Myzus persicae Sulzer) one of main pests this culture, causing economic damage. Synthetic fertilizers used in conventional crops can promote changes pattern amino acids plants, leading to higher insect The source fertilization factors that could influence incid...

Journal: :Manglar 2022

The presence of main phytophagous insects and their natural enemies has been recorded in quinoa crop (Chenopodium quinoa) as well the percentage infestation parasitism La Molina, from June 21st through September 27th, 2014. Survey was performed using pitfall traps, plant organ evaluation, aerial net, mined leaves collection mid third plant. Five important species were recorded, Liriomyza huidob...

Journal: :Bulletin of entomological research 2005
T H Schuler A J Clark S J Clark G M Poppy C N Stewart I Denholm

Crops transformed to express Bacillus thuringiensis (Bt) toxins can cause close to 100% mortality of certain target pest species. This study assessed the effect of target pest reduction on the predatory insect Chrysoperla carnea (Stephens) in the presence of alternative prey. Numbers of lacewings recovered from Bt oilseed rape (cultivar Oscar, event O52) did not differ significantly from number...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2009
J M Schuber L B Monteiro A S Poltronieri R C Z Carvalho M A C Zawadneak

Aphids are sap-sucking insects that mainly attack shoots and young leaves of peach trees and many other plant species; however, knowledge of the Brazilian aphid fauna is scant. The objective of this study was to identify aphid species collected in peach orchards (Prunus persica Batsch) and to determine their faunal indices for occurrence and dominance. The experiment was conducted from July 200...

Journal: :Entomologia Experimentalis Et Applicata 2021

To improve the effectiveness of biological control procedures, it is necessary to quantify survival rate a natural enemy through various stages life cycle, fecundity rate, and predation from birth death. It not only important obtain all parameters associated with table, but also in table framework. For this purpose, history, population parameters, Eupeodes corollae (Fabricius) (Diptera: Syrphid...

2009
Anne Kempel Roland Brandl Martin Schädler

Rhizobia play a key role for performance of leguminous plants and ecosystem productivity. However, no studies to date have investigated the importance of the rhizobial symbiosis for legume herbivore interactions. The additional nitrogen provided by the rhizobia improves the nutritional quality of plants, but may also be used for the synthesis of defence compounds. We performed greenhouse experi...

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