Submitted to: USDA, Agricultural Research Service, Cultivar Release
Publication Type: Germplasm Release
Publication Acceptance Date: January 18, 2007
Publication Date: January 18, 2007
Citation: Bohac, J., Jackson, D.M. 2007. Notice of Release of W-315 and W-388, Dry-Fleshed Sweetpotato Breeding Lines for Fresh Market and Processing. USDA, Agricultural Research Service, Washington, DC, January 18, 2007. Technical Abstract: The USDA-ARS has developed two dry-fleshed sweetpotato breeding lines, W-315 and W 388. W-315 and W-388 were obtained from true seed from open-pollinated polycrosses of 25 parental lines in 1994 and 1997, respectively. Both lines were evaluated in replicated field tests in Charleston and Bamberg Counties, SC, for yield, quality, and pest resistance. W-315 and W-388 produce mealy-textured roots that are non-sweet and high in dry matter. W-315 is similar in appearance to ‘Hanna’ and other Jersey types, but has higher yield under South Carolina growing conditions. W-388 is similar in appearance and quality to ‘Picadito’ or ‘Japanese Yam’, but has much higher resistance to insects and better long-term storability. Although W-315 and W-388 lines do not have all of the quality traits needed for a commercial cultivar, they have proven themselves as useful parents in polycross nurseries. Seeds harvested from W-315 and W-388 have produced many seedlings with resistance to insects and diseases and improved yields of roots with high dry matter and enhanced storability. Potentially, new cultivars could be selected from these seedlings for the Asian-American and Hispanic markets that require dry-fleshed types.