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Title: THREE VIRUS-RESISTANT SNAP BEAN GERMPLASM LINES, USWA-64, USWA-67, AND USWA-68

Author
item HANG, A - WASH. ST UNIV
item SILBERNAGEL, M - USDA ARS, RETIRED
item Miklas, Phillip - Phil

Submitted to: HortScience
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/1/1998
Publication Date: N/A
Citation: HANG, A.N., SILBERNAGEL, M.J., MIKLAS, P.N. THREE VIRUS-RESISTANT SNAP BEAN GERMPLASM LINES, USWA-64, USWA-67, AND USWA-68. HORTSCIENCE, 34:338. 1999.

Interpretive Summary: Three virus-resistant snap bean germplasm lines were released which meet local demands for home garden, processing, and fresh market green bean types. The lines possess resistance to the prominent diseases in the arid western states. These lines will be most useful for private breeders looking to improve large, medium, and small sieve type snap beans for the different market classes, and introgressing disease resistance, especially to curly top virus, into their programs. Curly top plagues bean production in the western states. An epidemic in 2000 wiped out some snap bean seed production fields in Washington which were planted with cultivars susceptible to curly top.

Technical Abstract: Three snap bean breeding lines, USWA-64, USWA-67, and USWA-68, were jointly released by USDA-ARS and the Agricultural Research Centers of Washington State Univ., The Univ. of Idaho, and Oregon State Univ. These germplasm lines possess the dominant I gene conditioning resistance to bean common mosaic virus (BCMV) and complete resistance to curly top virus (CTV), presumed to be due to two dominant epistatic genes. These lines produce a high yield of well-distributed green pods on an erect, bushy plant. The lines were developed for a large-sieved blue lake home garden type (USWA- 64), small-sieved blue lake processing type (USWA-67), and a medium-sieved fresh-market type (USWA-68) for production in the arid western states.