HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Gilman, D. F. Articles by Williams, C. Search for Related Content PubMed Articles by Gilman, D. F. Articles by Williams, C. Agricola Articles by Gilman, D. F. Articles by Williams, C.

Resistance in Soybeans to the Southern Green Stink Bug¹

The southern green stink bug [Nezara viridula (L.)] is a pest soybean [Glycine max (L.) Merr.] in many areas of the Southern U.S., particularly in Louisiana and other Gulf Coast states, as well as in other countries where soybeans are grown. To identify resistance to the southern green stink bug, 894 plant introductions and 26 cultivars of Maturity Groups V through VIII were evaluated in replicated single row field plots during 1975 to 1979 at Baton Rouge, LA. Damage ratings were made by classifying 100 seeds selected at random from each sample into four categories (none, light, medium, and severe) on the basis of visual damage.

Stink bug damage was associated with plant maturity, with earlier maturing genotypes generally having less damage than later maturing genotypes. Significant differences in stink bug damage were detected among cultivars within Maturity Group VI. There were no differences in damage among cultlvars within Groups V, VII, or VIII. However, all cultivars had in excess of 60% damage and were highly susceptible to stink bug feeding.

Highly significant differences in damage were obtained among plant introductions. Of the 894 strains evaluated, 67 had significantly less damage than the most resistant cultivar of similar maturity, and appeared to have resistance. These strains were from fairly diverse geographical locations and may represent different sources of resistance. There were no differences in damage among the more resistant strains within Maturity Groups V, VII, or VIII. However, the Group VI strain PI 171444 had significantly less damage than the other more resistant Group VI strains. This strain had the lowest stink bug damage rating in the test during all years, and appeared to have a high level of southern green stink bug resistance.

Key Words: Nezara viridula (L.) • Glycine max (L.) Merr • Insect resistance

² Former associate professor, Dep. of Agronomy (presently assistant professor, Dep. of Agriculture, Tarleton State Univ., Stephenville, TX 76402); former research associate, Dep. of Entomology (presently assistant professor, Dep. of Entomology, VPI and State Univ., Blacksburg, VA 24061); Boyd Professor, Dep. of Entomology; former assistant professor, Dep. of Entomology (presently associate professor, Dep. of Entomology and Nematology, Univ. of Florida, Agric. Res. Ed. Center, Quincy, FL 32351); and former associate professor, Dep. of Agronomy (presently plant breeder, Jacob Hartz Seed Co., P. O. Box 946, Stuttgart, AR 72160), Louisiana Agric. Exp. Stn., Baton Rouge, LA 70803, respectively.

Received for publication June 4, 1981.