Temperature and Plant Nutrient Effects on Resistance of Seedling Sorghum to the Greenhug12

1 February 1979

journal article
research article
Published by Oxford University Press (OUP) in Journal of Economic Entomology

Vol. 72 (1) , 20-23
https://doi.org/10.1093/jee/72.1.20

Abstract

The level of resistance in sorghum, Sorghum bicolor (L.) Moench, to the greenbug, Schizaphis graminum (Rondani), (C-biotype) was tested under 3 temperature regimes with the plants growing in one of 7 nutrient solutions. A resistant selection, KS 30, and a susceptible hybrid, RS 671, were the plant materials used. Lower temperature generally lowered resistance but resistance was influenced by the nutrient supplied the plant. Changes in nutrient supply varied the level of tolerance more than antibiosis. Resistant plants growing in excess potassium solutions achieved highest resistance over susceptible plants under all 3 temperature regimes tested.

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