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141 recherche sur le mot-clé
'Rhopalosiphum padi' 
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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[...]article/chapitre/communication
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M. Hullé ; D. Maurice ; C. Rispe ; J. Simon | 1999thèse/mémoire
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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
R. Glinwood ; J. Pettersson | 1999thèse/mémoire
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C. Rispe ; M. Hullé ; J. Gauthier ; J. Pierre ; R. Harrington | 1998article/chapitre/communication
G. Zuniga ; L. Corcuera | 1986article/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
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C. Rispe ; J. Bonhomme ; J. Simon | 1999article/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[...]
