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GERMPLASM

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

^a Dep. of Soil and Crop Sciences, Colorado State Univ., Ft. Collins, CO 80523
^b Univ. of Idaho, 3793 N 3600 E, Kimberly, ID 83341-5076
^c Dep. of Bioagricultural Sciences and Pest Management, Colorado State Univ., Ft. Collins, CO 80523
^d USDA-ARS, Soybean Genomics and Improvement Lab., Building 006, Plant Sciences Institute, Beltsville Agricultural Research Center, Beltsville, MD 20705-2350

^* Corresponding author (Mark.Brick{at}colostate.edu).

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).

Abbreviations: BCMV, Bean common mosaic potyvirus • DS, drought-stress environment • HR, hypersensitive reaction • NS, nonstress environment