|Miklas, Phillip - Phil
|SOLER-GARZON, ALVARO - Washington State University
|VALENTINI, GISELI - US Department Of Agriculture (USDA)
|Pastor Corrales, Marcial - Talo
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/31/2023
Publication Date: 4/18/2023
Citation: Miklas, P.N., Soler-Garzon, A., Valentini, G., Pastor-Corrales, M.A. 2023. Registration of ‘USDA Rattler’ pinto bean. Journal of Plant Registrations. 17(2):271-279. https://doi.org/10.1002/plr2.20289.
Interpretive Summary: Pinto bean is the most important dry bean market class grown in the US where it represents 65% of all dry beans produced on an annual basis. New pinto bean cultivars with improved traits including higher yields, yield stability, disease resistance, tolerances to drought and low soil fertility, and upright architecture, are sought after by growers. We developed a new pinto bean cultivar USDA Rattler which has all of the above listed traits desired by farmers. USDA Rattler was purposely bred to perform well under both ideal and stressful growing conditions. Many years of selection in a yield nursery with optimum water and fertilizer inputs and a contrasting purgatory plot with multiple stresses including drought, low soil fertility, and soil compaction, was used to develop USDA Rattler. This cultivar was released in 2021 and a commercial license was granted to a seed company in 2022. USDA-Rattler provides growers with a new pinto bean cultivar that yields well across diverse environments.
Technical Abstract: The pinto bean ‘USDA Rattler’ (Phaseolus vulgaris L.) was released by the USDA ARS in 2021 as a high-yielding, upright, full season cultivar, with abiotic stress tolerance. It was bred for broad adaptation to the different bean production regions across the United States by selection for high yield performance under nonstress and multiple stress trials in Washington state. The multiple stress trials included a ‘purgatory’ plot with low fertility, intermittent drought, and soil compaction, and a separate trial which simulated terminal drought. Conversely, the nonstress trials were well watered and fertilized to optimize yield potential. Broad adaptation for USDA Rattler is evidenced by an average yield of 4,547 kg ha-1 across five locations x two years in the Cooperative Dry Bean Nursery. Genetic markers and pathogen testing indicate USDA Rattler has I and bc-3 gene combination for durable resistance to all known strains of Bean common mosaic virus and Bean common mosaic necrosis virus. Greenhouse testing with four races of the rust pathogen indicated USDA Rattler is fixed for the Ur-3 resistance gene but is heterogenous for presence of the Ur-11 resistance gene. The seed size, appearance, and canning quality characteristics of USDA Rattler meets the industry standards for packaging and processing.