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Characteristics of barley resistance to cereal aphids. 2. Nutritional differences between barley strains



Characteristics of barley resistance to cereal aphids. 2. Nutritional differences between barley strains



Nogaku Kenkyu 61(3): 149-159



Of 11 genotypes tested under natural field infestation, Russia 6 and ZZ 2nd were the most resistant to attack by cereal aphids (Rhopalosiphum maidis, R. padi, Schizaphis graminum and Sitobion akebiae); they were rated at 1 on a 0 (no infestation) to 4 scale. Degree of resistance was positively related to the amount of surface wax on the leaves, and also depended on wax composition. Susceptibility increased with increasing contents of sugars and free amino acids in the leaves.

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