Evaluation location: New York, United States
Study Name: Gummy Stem Blight Resistance Evaluation for Cucumis/Cucurbit Experiment Type: Field/Greenhouse Greenhouse Exp. Design: RB Exp. Location: Ithaca Experiment length: 14 days Comment: Plants inoculated with 100,000 sp/ml inoculum, at the 3-4 leaf stage. Plants placed in a mist chamber for 72 hours and evaluated 4 days later. Checks used were PI 140471(R) and Honeydow(S). Samples were evaluated on a 1-4(stem) or 1-5(leaf) scale and converted to 1 - 9 scale. Disease rate: on the leaf, 1 = no disease, 2 = 1-25%, 3 = 26-50%, 4 = 51-75%, and 5 = 76-100% of leaf area necrotic respectively, on the stem, 1 = no damage, 2 = single lesion < 10 mm in length or composite < 20 mm, 3 = lesions > 20 mm with girdling of the stem, and 4 = the stem withered, 5 = plant dead.