---
taxid: 33129
genus: Phaseolus 
species: acutifolius
abbrev: phaac
commonName: tepary bean
description: "The tepary bean (Phaseolus acutifolius), native to the Southwestern United States and northern Mexico, has been cultivated by indigenous groups in that region since pre-Columbian times. It is generally more drought-tolerant than common bean"
    
strains:
  - identifier: Frijol_Bayo
    name: Frijol Bayo
    accession: PI 692269
    origin: Veracruz, Mexico
    description: "[Description by Dr. Phil McClean] The cultivated landrace, Frijol Bayo, was collected in a market in Cordoba, Veracruz, Mexico in 1951 by Howard Scott Gentry. Frijol Bayo is white-seeded, photoperiod insensitive with indeterminate growth habit, and has a hundred seed weight of 12.3 g. It exhibits broad adaptation and is drought (Beebe et al., 2011) and heat (Rodriguez, 2018) tolerant. With respect to biotic stress, it is resistant to common bacterial blight (Rodriguez, 2018), Uromyces appendiculatus, and two leaf hoppers, Empoasca krameri and Phaeoisariopsis griseola (Porch, T., unpublished data).  DNA for the Frijol Bayo genome assembly was isolated from leaves from single seed descent; seeds for Frijol Bayo are available from USDA GRIN (G40001-Seq; PI 692269)"
  - identifier: W6_15578
    accession: PI 638833
    name: W6 (15578)
    origin: Mexico
    description: "[Description by Dr. Kirstin Bett] W6 15578 is a wild P. acutifolius accession obtained from the Western Regional Plant Introduction Station of the USDA. Originally collected by O.W. Norvell in Mexico in 1955, it now has the Plant Introduction number PI 638833. It is photoperiod sensitive, has an indeterminate growth habit, small, mottled seeds, and the pods shatter at maturity. It was used as a donor parent in the development of an interspecific hybrid population to improve abiotic stress tolerance in common bean (Souter et al. 2017(1)). W6 15578 was one of the parents, along with PI 430219, of the tepary bean mapping population, BR-06, developed and genotyped at the University of Saskatchewan (Gujaria-Verma et al. 2016(2))."
  - identifier: Tep23
    name: Tep 23
    accession: PI 698457
    origin: Sonoran Desert
    description: "TARS-Tep 23 (Reg. no. GP-309, PI 698457) is an improved tepary bean germplasm with wide-ranging adaptation to tropical and temperate regions experiencing high temperature and drought stress conditions, with broad resistance to bean rust and with resistance to common bacterial blight. It has a flat, mottled black seed type with good seed size, a Type III plant habit, and a short crop cycle of 55–61 d in the environments tested. This germplasm was developed cooperatively by the USDA-ARS, Zamorano University, the University of California–Davis, and the University of Nebraska. The use of this improved germplasm by farmers in production zones affected by abiotic and biotic stresses, or by breeding programs, can potentially increase seed yields of this climate-resilient crop."