Abstract
Breeders and entomologists have continued to search for new sources of insect resistance in soybeans, Glycine max (L.) Merrill, because of the narrow genetic base currently in use in the development of insect-resistant soybeans. Recently, many new soybean accessions from China have been obtained. We examined lines belonging to maturity groups I through IV in Ohio and Illinois for insect resistance using the Mexican bean beetle, Epilachna varivestis Mulsant (in both states), and the potato leafhopper, Empoasca fabae Harris (in Illinois alone). Although a few lines-PI 567.751C, PI 567.765D, PI 567.770C, PI 567.452, and PI 567.685-had potentially useable levels of resistance, none had resistance levels similar to the earlier described lines PI 171.451, PI 229.358, and PI 227.687.
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