Abstract
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).
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