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article/chapitre/communication
K. Nienstedt ; H. Poehling | 2000Individuals of Sitobion avenae (F.) (Homoptera: Aphididae) were marked with the stable isotope N-15 through feeding on cereal seedlings which were immersed in a N-15-enriched nutrient solution. Increased N-15-contents were obtained in all aphids[...]article/chapitre/communication
R. Devisser ; H. Vianden ; H. Schnyder | 1997The contribution of pre-defoliation reserves and current assimilates to leaf and root growth was examined in Lolium perenne L, during regrowth after defoliation, Differential steady-state labelling with C-13 (CO2 With delta(13)C=-0.0281 and -0.0[...]article/chapitre/communication
The contribution of nitrogen reserves to regrowth following defoliation was studied in white clover plants (Trifolium repens cv. Huia). This was found to be closely linked to the morphological pattern of development of the aerial parts during th[...]