Evaluation of Selected Peanut Lines for Resistance to the Southern Corn Rootworm in the Greenhouse1

Abstract

Differential varietal reaction to injury by larvae of Diabrotica undecimpunctata howardi Barber, of 9 previously tested lines and 3 commercial cultivars of peanuts, Arachis hypogaea L., was measured at levels of infestation in the greenhouse. Significant differences in percent injured fruit were found between lines in immature, mature, and total fruit at the 25 and 50 larvae/basket level of infestation. High levels of injury resulted at the 100 larvae/basket level in the 3 categories of fruit, but differences (range 30.2-49.6) in mature fruit were not significant. Differences in percent injured fruit were found between levels of infestation.