Skip to main content
ARS Home » Research » Publications at this Location » Publication #222509
Title: Registration of white mold resistant dry bean germplasm line A 195

Author
item SINGH, S - U OF IDAHO
item TERAN, H - U OF IDAHO
item LEMA, M - U OF IDAHO
item SCHWARTZ, H - COLORADO STATE U
item Miklas, Phillip - Phil

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/1/2007
Publication Date: 11/1/2007
Citation: Singh, S. P., H. Teran, M. Lema, H.F. Schwartz, and P. N. Miklas. 2007. Registration of white mold resistant dry bean germplasm line A 195. Journal of Plant Registrations 1:62-63.

Interpretive Summary: Dry bean line A 195 developed by breeders from the University of Idaho along with ARS assistance with disease screening, was released as a source of novel resistance to Sclerotinia white mold. White mold is the #1 disease problem facing dry bean and snap bean breeders in the U.S. Integrated strategies are needed to conrol this disease. Dry bean lines with partial genetic resistance are an integral component of such strategies, but unfortunately few sources of resistance exist. A 195 provides a novel source that breeders can use to develop cultivars with partial resistance. Cultivars with improved resistance to white mold have potenital for stabilizing production and increasing farm revenues.

Technical Abstract: Dry bean (Phaseolus vulgaris L.) germplasm line A 195 (Reg. No. GP-245, PI 643973) is resistant to white mold [caused by Sclerotinia sclerotiorum (Lib.) de Bary], a widely distributed severe disease in the USA and Canada. A 195 also possesses the I gene for resistance to US-6 and other strains of the Bean common mosaic virus (BCMV, a potyvirus). When inoculated with the NL-3 and other strains of the Bean common mosaic necrosis virus (BCMNV, a potyvirus), A 195 exhibits top-necrosis and eventual plant death. A 195 exhibits resistance to angular leaf spot [caused by Phaeoisariopsis griseola (Sacc.) Ferraris] and has a moderate level of resistance to heat and drought.