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Physiological And Biochemical Responses Of Resistant And Susceptible Wheat To Injury By Russian Wheat Aphid, Lisa D. Franzen, Andrea R. Gutsche, Tiffany Heng-Moss, Leon G. Higley, Gautam Sarath, John D. Burd
Physiological And Biochemical Responses Of Resistant And Susceptible Wheat To Injury By Russian Wheat Aphid, Lisa D. Franzen, Andrea R. Gutsche, Tiffany Heng-Moss, Leon G. Higley, Gautam Sarath, John D. Burd
Department of Entomology: Faculty Publications
We examined the physiological and biochemical responses of resistant (“Halt” and “Prairie Red”) and susceptible (“TAM 107”) wheat, Triticum aestivum L., to injury by the Russian wheat aphid, Diuraphis noxia (Mordvilko). Photosynthetic capacity was evaluated by measuring assimilation/ internal CO2 (A/Ci) curves, chlorophyll fluorescence, chlorophyll, and nonstructural carbohydrate content. Total protein and peroxidase specific activity also were determined. No significant differences were detected in chlorophyll concentration between aphid-infested and control TAM107 plants. The aphid-infested resistant cultivars had similar or significantly higher chlorophyll concentrations compared with their respective control plants. Measurements over time showed that infested Halt plants …