Registration of Drought-Tolerant, Rust-Resistant, High-Yielding Pinto Bean Germplasm Line CO46348

Drought stress reduces dry bean (Phaseolus vulgaris L.) yield in more than 60% of the production regions worldwide. Pinto bean germplasm line CO46348 (Reg. No. GP-275, PI 651500) was developed by the Colorado Agricultural Experiment Station in cooperation with the University of Idaho and USDA-ARS and released 1 Apr. 2007. CO46348 is a drought-tolerant pinto bean germplasm with a 95 to 98 d growing season, high yield potential, excellent pinto seed quality, and resistance to rust caused by Uromyces appendiculatus. The complete pedigree of CO46348 is unknown; however, it was derived from a single cross made in 1989 with the pinto cultivar Othello as the female parent. Othello is a short-season pinto cultivar released in 1987 that combines excellent pinto seed color and resistance to some strains of bean common mosaic caused by Bean common mosaic virus (a potyvirus).