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article/chapitre/communication
M. Rafi ; R. Zemetra ; S. Quisenberry | 1997Effects of Russian wheat aphid (Diuraphis noxia Mordvilko) feeding on resistant wheat (Triticum aestivum L.) plant introduction line, PI 137739 (antibiotic line), and a susceptible cultivar, Stephens, were examined. Reduction in leaf chlorophyll[...]article/chapitre/communication
A. Vanderwesthuizen ; Z. Pretorius | 1995The effect of Russian wheat aphid (RWA), Diuraphis noxia infestation on protein, free amino acid, free proline, chlorophyll and phenolic contents as well as respiration rate was studied in resistant (cv Tugela-DN) and susceptible (cv Tugela) whe[...]article/chapitre/communication
U. Schurr ; U. Heckenberger ; K. Herdel ; A. Walter ; R. Feil | 2000Dicot leaf growth is characterized by partly transient tip-to-base gradients of growth processes, structure and function. These gradients develop dynamically and interact with dynamically developing stress conditions like drought, In Ricinus com[...]article/chapitre/communication
H. Cabrera ; V. Argandona ; L. Corcuera | 1994Different infestation levels with the greenbug (Schizaphis graminum Rondani) were correlated with physiological parameters and several metabolite concentrations in young barley plants (Hordeum vulgare cv Aramir). Leaf water potential, chlorophyl[...]article/chapitre/communication
M. Rafi ; R. Zemetra ; P. Berger | 1996