Sugar metabolism of winter wheat cultivars stressed by cereal aphids
1998
Havlickova, H. (Vyzkumny Ustav Rostlinne Vyroby, Prague-Ruzyne (Czech Republic)) | Moravcova, J.
The sugar metabolism of five winter wheat cultivars (Hana, Regina, Sparta, Viginta and Zdar) infested by the cereal aphids Metopolophium dirhodum, Rhopalosiphum padi and Sitobion avenae was assessed during two vegetative seasons. In both leaves and ears infested by aphids cultivar and aphid dependent changes in the metabolism of water soluble carbohydrates (WSC) were determined. In infested plant tissues the WSC content positively correlated with the level of cultivar infestation by M. dirhodum and negatively with R. padi densities on leaves and S. avenae numbers in ears. The proportion of fructose varied. The changes in sugar metabolism of aphid infested wheat plants are discussed in relation to the physiology and biochemistry of plants growing under biotic and abiotic stress conditions.
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