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'Hordeum vulgare' 
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thèse/mémoire
thèse/mémoire
article/chapitre/communication
K. Ponder ; J. Pritchard ; R. Harrington ; J. Bale | 2000Effects of nitrogen deficiency in hydroponically grown barley seedlings (Hordeum vulgare L.) on the development and reproduction of the aphid Rhopalosiphum padi (L.) (Hemiptera: Aphididae) were investigated. Plant growth was significantly reduce[...]
article/chapitre/communication
Insect herbivores that have high impacts on their host plants reduce the longevity of their habitats and require dispersal mechanisms. This hypothesis was tested by comparing the life history traits, particularly short- and long-distance dispers[...]
article/chapitre/communication
L. Hansen | 2000In Denmark, farmers are recommended to spray against aphids in spring barley fields at very low densities. Moreover, about 50% of the spring barley fields are treated with insecticides annually, when only about 25% need this control. In order to[...]
thèse/mémoire
article/chapitre/communication
K. Ponder ; J. Pritchard ; R. Harrington ; J. Bale | 2001Electrical penetration graphs (EPGs) were used to examine the probing behaviour of adult apterous Rhopalosiphum padi (Linnaeus) on barley seedlings grown under conditions of nitrogen or water stress. Aphids took significantly longer to reach and[...]
thèse/mémoire
thèse/mémoire
P. Sanvicente ; INPL Institut National Polytechnique de Lorraine;ENSAIA, Vandoeuvre-lès-Nancy (FRA) | 1999Langue(s) du résumé : ENG;FRE
article/chapitre/communication
We investigated the phloem loading pathway in barley, by determining plasmodes-matal frequencies at the electron microscope level for both intermediate and small blade bundles of mature barley leaves. Lucifer yellow was injected intercellularly [...]
article/chapitre/communication
Rates of CO2 fixation during the light period and the rates of CO2 release during the night period were measured using mature leaves from 39- to 49-d-old spinach (Spinacia oleracea L., US Hybrid 424; grown in 9 h light, 15 h darkness, daily) and[...]
thèse/mémoire
article/chapitre/communication
B. Naidu ; D. Aspinall ; L. Paleg | 1992
article/chapitre/communication
J. Weibull | 1994The phloem sap content of glutamic acid was determined in EDTA leaf exudate samples from a collection of Hordeum vulgare subsp. spontaneum previously screened for Rhopalosiphum padi resistance. Segregating populations of crosses between subsp. s[...]
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H. Belefantmiller ; D. Porter ; M. Pierce ; A. Mort | 1994During early stages of infestation by Russian wheat aphids (Diuraphis noxia [Mordvilko]; RWAs), barley (Hordeum vulgare L.) leaf cells collapsed and showed autofluorescence in the mesophyll and bundle sheath adjacent to the RWA stylet sheath. Th[...]
