Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/21/2006
Publication Date: 1/2/2007
Citation: Smith, J.R., Park, S.J., Beaver, J.S., Miklas, P.N., Canaday, C.H., Zapata, M. 2007. Registration of tars-sr05 multiple disease-resistant dry bean germplasm. Crop Science. 47: 457-458
Interpretive Summary: Soil diseases that rot the roots and stems of dry beans and snap beans cause tremendous loss of yield and revenue to producers worldwide. Seed-borne diseases (common bacterial blight and bean common mosaic virus) of common bean cause reduced seed quality, increased production costs, and loss of yield and revenue to producers worldwide. TARS-SR05, a small red common bean germplasm line, was recently developed by the Agricultural Research Service, Agriculture and Agri-Food Canada, the University of Puerto Rico, and the University of Tennessee Agricultural Experiment Station as a new source of resistance to soil-borne fungi (including Fusarium solani, and combinations of F. solani, Rhizoctonia solani, Pythium spp., and Macrophomina phaseolina) and seed-borne diseases (common bacterial blight and bean common mosaic virus). TARS-SR05 also offers good yield potential. It is adapted to both tropical and temperate growing environments and should help breeders develop new cultivars with improved disease resistance and greater yield potential.
Technical Abstract: TARS-SR05 was developed cooperatively by the USDA-ARS, Agriculture and Agri-Food Canada, the College of Agricultural Science, University of Puero Rico, and the University of Tennessee Agricultural Experiment Station as a multiple disease-resistant, small red dry bean (Phaseolus vulgaris L.) germplasm. It is an F6-derived bulk of 16 F8 single-plant progenies from the cross DOR 557/XAN 176. TARS-SR05 has an upright semi-determinate growth habit (IIa), full-season maturity at Harrow, Ontario, Canada, and matures in approximately 80 days at Isabela, Puerto Rico. Plant height is approximately 49 cm and seed size is 24 grams/100 seed. Seed of TARS-SR05 is narrow and oblong, has a shiny seed coat, and is typical of the tropical small red market class. However, seed production under high temperature conditions can result in some yellowing of seed coat color. TARS-SR05 has similar resistance to Fusarium solani (Mart.) Sacc. f. sp. phaseoli (Burkholder) W.C. Synder and H. N. Hans. as highly resistant Cornell 2114-12. It has similar resistance as Cornell 2114-12 to mixtures of F. solani, Rhizoctonia solani (Kühn), and Pythium spp., and R. solani, Macrophomina phaseolina (Tassi) Goidanich, and F. solani, but is less resistant than Cornell 2114-12 to a mixture of F. solani, R. solani, and P. ultimum (Trow.). TARS-SR05 has a high level of resistance to some strains of common bacterial blight (Xanthomonas campestris pv. phaseoli (Smith) Dye), but susceptibility to other strains, carries the “I” gene for resistance to races 1 and 15 of bean common mosaic virus (BCMV), and has very good yield potential in both tropical and temperate environments. TARS-SR05 is a new and unique source of resistance to soil pathogenic fungi, BCMV, and common bacterial blight, and will be useful for improving resistance to these pathogens in dry edible bean and snap bean.