Registration of ‘Sedona’ Pink Bean

‘Sedona’ pink bean (Phaseolus vulgarisL.) (Reg. no. CV-263, PI 642028) was developed cooperatively by the Michigan Agricultural Experiment Station and theUSDA-ARS and released in 2005 as an upright, midseason, disease-resistant cultivar. Sedona, tested as S00809, was developed from the cross: X94076/R94142 made in 1994 to develop an upright pink bean cultivar for Michigan. X94076 was a pink bean breeding line from the Michigan State University (MSU) bean breeding program lacking upright architecture. R94142 was an upright small red breeding line from the USDA-ARS program at MSU that had a similar upright architecture and breeding background to ‘Merlot’ (Hosfield et al., 2004). F1 plants were advanced in the greenhouse and F2 seed were space-planted in a nursery at the Saginaw Valley Bean and Sugarbeet Research Farm near Saginaw, MI, in 1995. A single F2 plant possessing the desired agronomic and pink bean seed traits was selected. Further single-plant selection was made in a F3 nursery in Michigan on the basis of agronomic and seed traits and resistance to bean rust [caused by Uromyces appendiculatus (Pers.:Pers.) Unger]. The F3:4, F3:5 and F3:6 progeny rows were advanced as plant rows in Michigan (1997–1999). The reaction to virus was confirmed by inoculating plants in the greenhouse for reaction to the NL 3 strain of Bean Common Mosaic Necrosis Virus (BCMNV). The F3:7 breeding line, coded S00809, was tested for yield and agronomic traits at 30 locations in Michigan from 2000 to 2005 before release. Sedona was compared with small red cultivars because no commercial pink bean cultivars are grown in Michigan. Sedona averaged 2670 kg ha over all locations and yielded 170 kg ha less than Merlot at 26 locations. Sedona significantly out-yielded the commercial small red bean cultivars ‘Rufus’ and ‘Brooks’ by an average yield increase of 8% over 13 and 16 locations, respectively. Sedona is the first upright pink bean cultivar to be developed at MSU. It averages 50 cm in height and exhibits the Type II upright indeterminate growth habit, with gives it moderate resistance to lodging. Sedona has white flowers and blooms 41 to 44 d after planting. Sedona is a midseason bean, maturing 93 d after planting and has a range in maturity from 90 to 95 d, depending on season and location. Sedona matures uniformly about 2 d earlier than Merlot and 5 d earlier than Brooks and Rufus. During pod fill, some plants have exhibited a tendency to break at ground level under conditions of strong winds and low planting densities. Sedona possesses the bc-1 gene that conditions resistance to certain strains of Bean common mosaic virus (BCMV) and exhibits delayed mild mosaic symptoms to the temperatureinsensitive necrosis-inducing strains of BCMNV such as NL 3. Sedona displays resistance to the indigenous bean rust races prevalent in Michigan but is susceptible to the common races (7 and 73) of Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib., the cause of bean anthracnose. Sedona is tolerant to Michigan isolates of root rot [caused primarily by Fusarium solani (Mart.) Sacc. f. sp. phaseoli (Burkholder)W.C. Snyder & H.N. Hans.] but is susceptible to common bacterial blight [caused byXanthomonas axonopodis pv. phaseoli (Smith) Dye]. Sedona exhibits similar levels of tolerance or plant avoidance (46% incidence) to white mold [caused by Sclerotinia sclerotiorum (Lib.) de Bary] as Merlot (44% incidence). Sedona produces a medium-sized pink seed that averages 37 g 100 seed (range 33–37 g 100 seed). The seed is similar in color and shape to ‘UI 537’. In canning trials, Sedona scored 5.4 on a seven-point hedonic scale (where 7 is most desirable, 1 is least desirable, and 4 is average), as compared with the scores 4.8, 3.3, and 5.9 for the small red cultivars Merlot, Brooks, and Rufus, respectively. After processing, Sedona retains size and color equivalent to that of small red beans. Sedona does not differ significantly from the small red bean cultivars in seed hydration, and drained weight ratios, but it produces a slightly softer cooked bean texture. Sedona pink bean cultivar was released by Michigan Agricultural Experiment Station, East Lansing, MI, and is available under license from the MSU Office of Intellectual Property, with the option that Sedona may be sold for seed by name only under the Foundation and Certified Seed classes. A royalty will be assessed on each 100-weight unit of Foundation Seed sold. Breeder Seed is maintained by the Michigan Agricultural Experiment Station under license with the Michigan Crop Improvement Association. Small quantities of Sedona seed for testing purposes can be obtained from the corresponding author for the first 5 yr. Recipients of seed are asked to make appropriate recognition of the source of germplasm if it is used in the development of a new cultivar, germplasm, parental line, or genetic stock. U.S. Plant Variety Protection for Sedona is pending.