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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0PI 647087'DENNISON'Glycine max (L.) Merr. Ohio, United StatesSOY2007DEVELOPED01/2006CultivarDennison has indeterminate stem habit, white flowers, light tawny pubescence, tan pods, and yellow seeds with a black hilum. It is classified in maturity group III (relative maturity 3.5), and is adapted as a full-season cultivar from 40 to 42 N lat. In Ohio tests (2003 to 2005, four or five locations per year), seed yield of Dennison was 4% greater than that of Kottman , a current public cultivar in Ohio. Dennison matured 2 d earlier than Kottman, and was 5 cm taller and slightly less resistant to lodging. In Ohio, seed of Dennison has averaged 405 g kg-1 protein, compared with 415 g kg-1 for Kottman. Oil content has averaged 200 g kg-1, compared with 201 g kg-1 for Kottman. Hypocotyl inoculation with a series of isolates of P. sojae demonstrated that Dennison carries the Rps1k and Rps3 genes for race-specific resistance to Phytophthora root and stem rot. Partial resistance to P. sojae is excellent, with a score of 3.5 on a scale of 1 (best) to 9 (worst), using the procedure of Schmitthenner and Bhat (1994). 1722606PI 647087