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GERMPLASMS

Registration of Common Bacterial Blight, Rust and Bean Common Mosaic Resistant Great Northern Common Bean Germplasm Line ABC-Weihing

^a Bati Akdeniz Agricultural Research Institute, Antalya, Turkey
^b University of Nebraska, Scottsbluff, NE 69361
^c USDA-ARS, Vegetable and Forage Crop Research Unit, 24106 N. Bunn Rd., Prosser, WA 99350
^d USDA-ARS, Vegetable Lab., Beltsville Agricultural Research Center, 10300 Baltimore Ave., Beltsville, MD 20705-2350
^e University of Nebraska, Lincoln, NE 68583

^* Corresponding author (currea2{at}unl.edu).

ABSTRACT

Great northern common bean (Phaseolus vulgaris L.) germplasm line ABC-Weihing (Reg. No. GP-246, PI 647964) was developed by the University of Nebraska Agricultural Research Division in cooperation with USDA-ARS and released in 2006. This line, tested as NE1-05-4, was bred specifically for enhanced resistance to common bacterial blight (CBB), a major seed borne disease of common bean caused by the bacterium Xanthomonas campestris pv. phaseoli (Smith) Dye (Xcp). ABC-Weihing is a great northern BC₅F_3:6 line obtained from five backcrosses (‘Weihing’*5//‘Chase’/XAN 159). The first cross was made in spring 1997. Only BC_nF₁ plants resistant to Xcp isolates Dominican Republic DR-7 and Nebraska SC4A, as determined by multiple needle leaf inoculation tests in the greenhouse, were used for successive backcrossing. In addition to phenotypic selection for CBB resistance, marker-assisted selection for the resistant QTL-linked marker SU91 was conducted in the BC₁F₁, BC₂F₁, and ABC-Weihing. When inoculated with Nebraska Xcp strains in the field, ABC-Weihing exhibited resistance in both 2005 and 2006. ABC-Weihing has Ur-3 and Ur-6 genes for resistance to common bean rust and carries the single dominant hypersensitive I gene that provides resistance to all non-necrotic strains of the Bean common mosaic virus (BCMV). ABC-Weihing has bright white seed, blooms 45 d after planting, and is a midseason bean maturing 92 d after planting.

Abbreviations: BCMV, Bean common mosaic virus • BCMNV, Bean common mosaic necrosis virus • CBB, common bacterial blight • QTL, quantitative trait loci • Xcp, Xanthomonas campestris