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P. Andersen ; B. Brodbeck ; R. Mizell | 1989article/chapitre/communication
H. Havlickova | 1996Four winter wheat cultivars of domestic origin (Hana, Regina, Viginta, Zdar) and foreign cultivar Sparta were tested in glasshouse conditions for suitability to cereal aphids Metopolophium (Walker), Rhopalosiphuin padi (L.) and Sitobion avenae ([...]article/chapitre/communication
M. Blua ; T. Perring ; M. Madore | 1994Cucurbita pepo plants were infected with zucchini yellow mosaic virus or maintained noninfected. Aphis gossypii, which transmits the virus, lived longer and produced more offspring on infected than on noninfected plants. On infected plants, the [...]article/chapitre/communication
M. Vanhelden ; W. Tjallingii ; A. Teris ; T. Vanbeek | 1994The chemical composition of phloem sap from lettuce, collected by three different methods, was compared. Phloem sap from stylectomy samples contained sucrose and 14 amino acids. Honeydew and EDTA chelation samples showed considerable breakdown o[...]