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Title: Registration of ‘Krimson’ cranberry bean

item Miklas, Phillip - Phil
item RIELY, RON - Basin Seed Company

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/15/2011
Publication Date: 1/1/2012
Citation: Miklas, P.N., Riely, R. 2012. Registration of ‘Krimson’ cranberry bean. Journal of Plant Registrations. 6:11-14.

Interpretive Summary: Cranberry bean is a dry bean market class grown in U.S. and Canada across 30,000 acres. Cranberry bean grown in the U.S. is primarily exported to Italy and other countries. Few improved cultivars of cranberry bean exist, and most that do exist are susceptible to viruses endemic in the western U.S. ARS-Prosser developed a new cranbery bean cultivar named 'Krimson' that possesses exceptional resistance to virus diseases prevalent in the western U.S. Krimson also has desired seed size and color and is broadly adapted. Krimson provides an improved cranberry bean cultivar to growers for production not only in the west but nationawide as well. Improved yield and disease resistance will provide greater economic return and reduce pestice use and cost.

Technical Abstract: Cranberry is an important dry bean (Phaseolus vulgaris L.) market class grown in the United States and Canada. Beet curly top virus (BCTV) plagues cranberry bean production in the western U.S. (CA, ID, OR, WA). ‘Krimson’ (Reg. No. CV PI 663911 ) cranberry bean released by the USDA-ARS in 2009, was bred for a high level of resistance to BCTV. Krimson possesses the Bct gene conferring resistance to BCTV as indicated by presence of the SAS8.1550 SCAR marker tightly linked with the gene. Greenhouse inoculation tests with the NL-3 strain of Bean common mosaic necrosis virus (BCMNV) revealed presence of the I gene which conditions resistance to Bean common mosaic virus (BCMV) and hypersensitive response to BCMNV. Intermediate resistance to rust [Uromyces appendiculatus Pers.:Pers) Unger] will benefit production east of the continental divide. Krimson was also bred for enhanced yield potential and wide adaptation which is evidenced by an average yield of 2487 compared to 2310 kg ha-1 for the check ‘Capri’ across 21 location-years in the Cooperative Dry Bean Nursery. Maturity (3 days earlier than Capri), seed size (same as Capri) , and seed appearance and canning quality traits (slightly less desirable than Capri) for Krimson were within the desired range for the cranberry dry bean market class. Krimson is suitable for commercial production across the U.S., but with the additional benefit of virus resistance for commercial and seed production in the western U.S.