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REGISTRATION OF GERMPLASM

Registration of Three Early Maturity Anasazi-Type Common Bean Germplasms with Resistance to Bean common mosaic virus

^a Dep. of Soil and Crop Sciences, Colorado State Univ., Ft. Collins, CO 80523
^b Dep. of Bioagricultural Sciences and Pest Management, Colorado State Univ., Ft. Collins, CO 80523
^c Research Geneticist, USDA/ARS, 24106 N. Bunn Rd, Prosser, WA 99350
^d Fruita Res. Stn., 1910 L Road, Fruita, CO 81521

* Corresponding author (mbrick{at}lamar.colostate.edu)

CO-32948 (Reg. no. GP-217, PI 618729), CO-32977 (Reg. no. GP-218, PI 618730), and CO-40696 (Reg. no. GP-219, PI 618731) are three Anasazi-type common bean (Phaseolus vulgaris L.) germplasm lines developed by the Colorado Agricultural Experiment Station. Anasazi-type dry beans are grown commercially in the southwestern US. The predominant Anasazi-type cultivar grown in the Four-Corners region of southwestern Colorado was derived from a Native American landrace with late maturity, a vigorous, recumbent growth habit, and high susceptibility to bean common mosaic (BCM) caused by Bean common mosaic virus (BCMV). This cultivar is drought tolerant, photoperiod sensitive, and uniquely adapted to the arid high altitude regions of the American southwest. When grown in more northern latitudes, flowering and crop maturity are delayed and the crop is often damaged by frost (Silbernagel, 1997).

Anasazi-type beans are characterized by a red and white seed coat pattern typified by PI 451802. Genes controlling the Anasazi seed coat pattern were described by Bassett et al. (2000). The name Anasazi is held as a registered trademark by Adobe Milling Co., Dove Creek, CO, and beans with this seed coat pattern cannot be sold under the name Anasazi unless authorized by Adobe Milling. However, they may be sold under names other than Anasazi without violating the trademark.

CO-32948 and CO-32977 are F_3:7 lines from the single cross GH 196/‘Anasazi’. CO-40696 is an F_4:6 line from the single cross ‘Othello’/Anasazi made in 1990. The parent designated Anasazi is a commonly grown land race in the Four-Corners region of southwestern Colorado. Seed of the Anasazi parent used for crossing was obtained from Adobe Milling Co., Dove Creek, CO. At Fort Collins, CO, mean harvest maturity of the cultivar Anasazi was 112 d. GH-196 is a mid-season, high yielding pinto germplasm (Burke et al., 1995), later released as ‘UI 196’. It carries the bc-2² allele for resistance to BCM. Othello is an early-season pinto cultivar released in 1986 that also possesses the bc-2² allele for resistance to BCM (Burke et al., 1995).

The germplasm lines combine midseason maturity, high yield potential, and, except for CO-40696, resistance to BCM. The three lines and the Anasazi parent were tested for 3 yr at Fort Collins, CO. Mean days to harvest maturity were 93 d for CO-32948 and CO-32977, 94 d for CO-40696, and 112 d for Anasazi. Mean seed yields were 1774, 1830, 1613 and 1830 kg ha^-1, and mean seed weights were 35.7, 35.2, 36.2, and 26.7 g 100 seed^-1 for CO-32948, CO- 32977, CO-40696, and Anasazi, respectively. CO-32948 and CO-32977 carry genes that confer resistance to BCM. CO-3948 is homozygous and CO-32977 is segregating for the bc-2² allele which confers resistance to pathogroups I, II, III, IV, V, and VI of BCMV. All three lines have a semivine, prostrate, Type III growth habit.

Limited seed quantities of the three germplasms may be obtained from the corresponding author upon written request, Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523-1170.

NOTES

Research supported by the Colorado Agric. Exp. Stn., Colorado Dry Bean Administrative Committee, and Colorado Seed Growers Assoc. Registration by CSSA.

Accepted for publication August 31, 2001.

REFERENCES

• Bassett, M.J., K. Hartel, and P. McClean. 2000. Inheritance of the Anasazi pattern of partly colored seedcoats in common bean. J. Am. Soc. Hort. Sci. 125:340–343.[Abstract/Free Full Text]
• Burke, D.W., M.J. Silbernagel, J.M. Kraft, and H.H. Koehler. 1995. Registration of ‘Othello’ pinto bean. Crop Sci. 35:943.[Free Full Text]
• Burke, D.W., J.P. Meiners, M.J. Silbernagel, J.M. Kraft, and H.H. Koehler. 1995. Registration of pinto GH-196 and JM-126, pink UNS-117 and 6R-42, and great northern JM-24 dry bean germplasm. Crop Sci. 35:945.[Free Full Text]
• Sibernagel, M.J. 1997. Release of a black and white Anasazi-type dry bean germplasm, USWA-27 with virus resistance. Annu. Rep. Bean Improv. Coop. 40:154-155.

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