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ARS Home » Research » Publications at this Location » Publication #94841
Title: ANTIBIOSIS OF RELEASED SOYBEAN GERMPLASM TO MEXICAN BEAN BEETLE (COLEOPTERA: COCCINELLIDAE)

Author
item HAMMOND, R - OHIO AGR. RES. & DEV. CTR
item Cooper, Richard

Submitted to: Journal of Entomological Sciences
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/19/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary: Insect feeding on soybeans can significantly reduce soybean yields. In the Southern states severe insect infestation occurs annually. In the Midwest, economic levels of insect damage can occur sporadically, depending on year and location. Breeding for insect resistance results in biological control of insects, reducing the need for and use of chemical pesticides. These germplasm lines will provide a useful source insect resistance for use by both public and private soybean breeders in the development of insect resistance soybean cultivars.

Technical Abstract: None of the soybean Glycine max (Merrill), cultivars released as being insect resistant are grown over large areas of the U.S. partly due to reduced yields and lower than expected insect resistance levels. Ohio, which has been conducting insect-resistance breeding work in Ohio for the past 18 years, recently released 2 germplasm lines, HC95-15MB and HC95-24MB, with significant levels of insect resistance and yields approaching those of adapted cultivars. This report compares resistance levels of these 2 lines to order advanced lines from 2 different breeding programs. Additionally, resistance levels as expressed at 2 different soybean growth stages, late vegetative and mid-reproductive, were compared. While resistance levels in the other germplasm lines tended to lower as the soybean matured, the resistance in HC95-15MB and HC95-24MB remained at levels similar to those observed during early growth stages.