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Scores represent relative levels of tolerance to the disease, as outlined below. White mold, caused by Sclerotinia sclerotiorum, is a soybean disease for which there is currently no know form of complete genetic resistance. Phytophthora field tolerance scores indicate the following levels of tolerance: 7 = Poor Reaction to Phytophthora sojae Race 17 and/or Race 30 for products with Rps2, Rps3a and Rps6. Reaction to Phytophthora sojae Race 25 for products with Rps1a, Rps1c, Rps1k and Rps7. Phytophthora field tolerance scores represent relative responses to the following races of Phytophthora sojae. Phytophthora field tolerance is a form of partial genetic resistance whereby the plant can maintain some level of productivity while infected with the pathogen. HERBICIDE TOLERANT TRAITS: CONV = CONVENTIONAL RR2Y = ROUNDUP READY 2 YIELD® SR = SULFONYLUREA READY (TOLERANCE TO SULFONYLUREA-BASED HERBICIDES) The Race 3 population used in our evaluations would be equivalent to “HG Type 0” and the Race 14 population would be equivalent to “HG Type 1.3” under the direction of the paper. Soybean Cyst Nematode: R = Resistant MR = Moderately Resistant MR/MS = Moderately Resistant to Moderately Susceptible S - Susceptible # = Race 1, 3, 5, 9 or 14Ī recent publication suggests that soybean cyst nematode populations should be described by a different method called HG type, instead of races. For white mold and Phytophthora Field Tolerance, see specific rating scales on this page. Rating Scale: 1 = Excellent 9 = Poor - = NoneĪ rating of “ 1 ” in standability is a soybean product with excellent standability.Ī rating of “ 1 ” in brown stem rot is a product with excellent tolerance to brown stem rot.