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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0PI 642448USPT-WM-1Phaseolus vulgaris L. Washington, United StatesW62006DEVELOPEDPRE 05/08/2006Breeding materialUSPT-WM-1 was selected based on partial resistance to white mold and agronomic characteristics across four white mold field environments in ND and WA in 2001 and 2002. Across environments, mean disease score based on a subjective scale from 1 to 9, where 1 is no visible infection and 9 is a completely susceptible reaction, was 3.7 for USPT-WM-1 compared to 6.8 for Aztec and 5.0 for ICA Bunsi. The line exhibits disease avoidance characteristics: upright Type IIb growth habit; open canopy score of 2.4, where 1 is a completely open and 5 a completely closed canopy, compared to scores of 2.7 for Aztec and 3.7 for ICA Bunsi; taller canopy height of 49 cm, compared to 41 and 44 cm for Aztec and ICA Bunsi; and reduced lodging score of 3.9, where 1 is no lodging and 9 completely lodged, compared to 6.2 Aztec and 6.3 for ICA Bunsi. The line has mid season 94-d maturity, compared to 90 d for Aztec and 96 d for ICA Bunsi. USPT-WM-1 exhibits the stay-green stem trait with a score of 2.6, where 1 = 0 to 20% and 5 = 80 to 100% stay-green stem, compared to 1.8 and 3.8 scores for Aztec and Bunsi, respectively. The stay green trait is described as pods reaching harvest maturity while the branches remain green. Thus, the plant is still likely to be physiologically active and engaged in plant defense response. Seed size based on weight of 100 seeds was 33.6 compared to 33 g for Aztec, however, in the absence of white mold disease pressure weight of 100 seeds for USPT-WM-1 was 4 g less than Aztec. Yield was 2610 kg ha-1 compared to 2290 kg ha-1 for Aztec in a yield trial conducted at Othello, WA in 2004.1700486PI 642448