Registration of the slow darkening pinto common bean cultivar ‘Wildcat’

Authors: URREA, CARLOS - University Of Nebraska; Pastor Corrales, Marcial - Talo; VALENTINI, GISELI - Universidade Estadual De Maringá; XAVIER, LARISSA - Universidade Estadual De Maringá; SANCHEZ-BETANCOURT, ERIKA - University Of Nebraska

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/25/2021
Publication Date: 12/27/2021
Citation: Urrea, C.A., Pastor Corrales, M.A., Valentini, G., Xavier, L., Sanchez-Betancourt, E. 2021. Registration of the slow darkening pinto common bean cultivar ‘Wildcat’. Journal of Plant Registrations. 16:220-228. https://doi.org/10.1002/plr2.20198.
DOI: https://doi.org/10.1002/plr2.20198

Interpretive Summary: Diseases caused by fungal, bacterial, and viral pathogens are major threats to dry bean production in Nebraska. The rust, common bacterial blight (CBB), and bean common mosaic virus (BCMV) diseases are significant crop production hazards. The development of dry bean cultivars at the University of Nebraska includes common beans with resistance to these diseases. Wildcat, a new pinto common bean cultivar, was developed using three bean germplasm lines from the ARS Beltsville Agricultural Research Center. These lines combine multiple genes for resistance to all known virulent strains of the rust and BCMV diseases. They contain a rust resistance gene, named Ur-11, that confers broad resistance to rust. Wildcat merges high yield with the pinto bean’s slow-darkening seed trait that affords longer shelf life and a larger seed size. These valuable traits of Wildcat will benefit common bean growers and common bean production in Nebraska and other states in the U.S.

Technical Abstract: Slow darkening pinto common bean cultivar ‘Wildcat’ (Reg. No.CV-, PI) was developed by the dry bean breeding program at the University of Nebraska and released in 2018. It was bred specifically for adaptation to western Nebraska growing conditions and enhanced resistance to the bean rust, common bacterial blight (CBB) and bean common mosaic virus (BCMV) pathogens. Seed yield of Wildcat was comparable to the conventional and slow darkening pinto bean cultivars grown in Nebraska from 2015 to 2020. It also performed well during regional and national trials. It also performed well during regional and national trials. Wildcat had significantly higher yield (P = 0.05) than ‘Twin Falls’ (in Nebraska), ‘Nez Perce’ (in Colorado), and ‘Black Foot’ (in Colorado and Washington) during the 2017 Western Regional Bean Trial, than ‘Montrose’ and ‘Buster’ (in Michigan) during the 2017 Mid-west Regional Performance Nursery, and than ‘ND-Palomino’ and ‘La Paz’ (in Ontario, Michigan, and Washington) during the 2018 Cooperative Dry Bean Nursery. Wildcat has the Ur-11 gene that confers broad-spectrum rust resistance; it is resistant to all but one of all known races of the bean rust pathogen, and it carries the Indel NDSU_IND_11_48.459.896 marker tagging the Ur-11 rust resistance locus. In addition, Wildcat has the SAP6 SCAR marker linked to a major common bacterial blight (CBB) resistance QTL. The reaction of Wildcat to the CBB pathogen under field conditions at the Scottsbluff and Mitchell Ag lab in 2020 was an intermediate disease rating of 5.0. Wildcat also carries the single dominant hypersensitive I gene that confers resistance to all non-necrotic strains of BCMV and the SW13 SCAR marker linked to the I gene for resistance to BCMV. Wildcat has white flowers, blooms 46 d after planting, and is a full season bean, maturing 93 d after planting. Seed size of Wildcat was significantly (P = 0.05) larger than current conventional and slow darkening pinto beans, making it attractive for international and domestic trade market.