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Evaluation of Soybean, Dry Bean, and Sunflower for Resistance to Sclerotinia sclerotiorum

^a Dep. of Crop Sciences, Univ. of Illinois
^b Usda-Ars, Fargo, Nd
^c Dep. of Plant Pathology, University of Nebraska
^d USDA-ARS and Dep. of Crop Sciences, Univ. of Illinois, 1101 W. Peabody Dr., Urbana, IL 61801

View larger version (28K): [in a new window]   Fig. 1. Lesion length (cm) from 3 to 14 DAI on soybean plants that were 5-, 6-, and 7 wk old at inoculation. A partially resistant cultivar, NKS19-90, and susceptible cultivar, Williams 82, were inoculated with S. sclerotiorum isolate 105HT, incubated for 48 h, and postincubated at 25 ± 1°C to observe disease development. FLSD values were 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, and 1.3, respectively, for 8, 9, 10, 11, 12, 13, and 14 DAI.

View larger version (28K): [in a new window]   Fig. 2. Effect of postincubation temperatures on disease response of four soybean cultivars evaluated. Inoculated stems were incubated for 48 h followed by an exposure at 25 and 30°C for 12 d. FLSD values were 0.2, 0.2, 0.3, 0.4, 0.5, 0.6, 0.6, 0.6, 0.7, and 0.8, respectively, for 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 DAI.