GROWTHROOM EVALUATION OF SOYBEAN CULTIVARS FOR RESISTANCE TO <i>Sclerotinia sclerotiorum</i>

Abstract

Forty-three soybean (Glycine max) cultivars were evaluated for resistance to Sclerotinia sclerotiorum in the growthroom by a modified limited-term-inoculation (LTI) method to determine whether any were more resistant than Evans. Cultivars were compared with Evans in small tests; those appearing to be more resistant were advanced for further testing. Averaged over three trials, Corsoy 79, Hodgson, Hawk and Pioneer 1677 were significantly (P = 0.05) more resistant than Evans. These same cultivars and Pioneer 0877, Maple Arrow, OAC 1981–3, Apache, Ozzie, and OAC 1981–4 were also more resistant than Evans in the last trial.Key words: Soybean, Sclerotinia sclerotiorum, disease resistance