Registration of PR1572-19 and PR1572-26 Pinto Bean Germplasm Lines with broad resistance to rust, BGYMV, BCMV, and BCMNV

Authors: BEAVER, J - University Of Puerto Rico; GONZALEZ, A - University Of Puerto Rico; GODOY DE LUZ, G - Dominican Institute For Agricultural And Forestry Research (IDIAF); ROSAS, J - Zamorano, Panamerican School Of Agriculture; Hurtado-Gonzales, Oscar; Pastor Corrales, Marcial - Talo; Porch, Timothy - Tim

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/11/2019
Publication Date: 1/10/2020
Citation: Beaver, J.S., Gonzalez, A., Godoy De Luz, G., Rosas, J.C., Hurtado-Gonzales, O.P., Pastor Corrales, M.A., Porch, T.G. 2020. Registration of PR1572-19 and PR1572-26 Pinto Bean Germplasm Lines with broad resistance to rust, BGYMV, BCMV, and BCMNV. Journal of Plant Registrations. https://doi.org/10.1002/plr2.20027.
DOI: https://doi.org/10.1002/plr2.20027

Interpretive Summary: Common bean rust, Bean golden yellow mosaic virus (BGYMV), bean common mosaic virus (BCMV), and bean common mosaic necrosis virus (BCMNV) are devastating diseases of dry beans in Central America and the Caribbean. Collaborating scientists from the University of Puerto Rico, ARS-Beltsville, ARS-Mayaguez, Puerto Rico, Zamorano University of Honduras and the National Research Institute of the Dominican Republic, have developed two pinto common bean germplasm lines (PR15-72-19 and PR1572-26) with resistance to these four diseases. Both lines have two genes that together confer resistance to all known virulence strains of the rust pathogen and two genes for resistance to all strains of the BCMV and BCMNV. In addition, PR15-72-19 and PR1572-26 also possess a gene for resistance to BGYMV. Both lines were highly resistant to rust under field conditions in Puerto Rico and the Dominican Republic and resistant to BGYMV in Honduras. Both lines produced higher yields than known pinto varieties in Puerto Rico. These lines could be used by breeders to broaden the genetic base and to enhance disease resistance in commercial pinto beans.

Technical Abstract: Common bean rust caused by Uromyces appendiculatus, Bean golden yellow mosaic virus (BGYMV), bean common mosaic virus (BCMV), and bean common mosaic necrosis virus (BCMNV) are devastating diseases of dry bean (Phaseolus vulgaris L.) in Central America and the Caribbean. The development of dry bean cultivars with enhanced levels of genetic resistance to these and other diseases is an important goal of the University of Puerto Rico (UPR) and other dry bean breeding programs in Central America and the Caribbean. PR1572-19, (Reg. No. GP-____, PI ____), and PR1572-26, (Reg. No. GP-____, PI __) are multiple virus and rust resistant pinto bean germplasm lines adapted to the humid tropics that were developed and released cooperatively in 2018 by the UPR Agricultural Experiment Station, the Instituto Dominicano de Investigaciones Agropecuarias y Forestales and the USDA-ARS. Both PR1572-19 and PR1572-26 possess the bgm-1 gene for resistance to BGYMV, the I and bc-3 loci that provide broad resistance to all strains of the BCMV and BCMNV in the U.S. and the Caribbean, the Ur-3 and Ur-11 loci that confer comprehensive resistance to all known races of the bean rust pathogen. PR1572-26 also has the SW12 QTL marker associated with resistance to BGYMV. PR1572-19 and PR1572-26 produced mean seed yields as great as the check variety 'Santa Fe' in trials conducted in Puerto Rico. These lines produced mean seed yields as great as the check variety 'Santa Fe' in the Cooperative Dry Bean Nursery conducted in Puerto Rico. Both lines should serve as useful sources of resistance to BGYMV, BCMV, BCMNV and bean rust for common beans of the Durango race that includes the pinto and great northern market classes of dry beans.