American Journal of Potato Research

, Volume 87, Issue 5, pp 458–471 | Cite as

Clearwater Russet: A Dual-Purpose Potato Cultivar with Cold Sweetening Resistance, High Protein Content, and Low Incidence of External Defects and Sugar Ends

  • Richard G. Novy
  • Jonathan L. Whitworth
  • Jeff C. Stark
  • Steve L. Love
  • Dennis L. Corsini
  • Joe J. Pavek
  • M. I. Vales
  • Steve R. James
  • Dan C. Hane
  • Clint C. Shock
  • Brian A. Charlton
  • Charles R. Brown
  • N. R. Knowles
  • Mark J. Pavek
  • Tina L. Brandt
  • Sanjay Gupta
  • Nora Olsen
Article

Abstract

Clearwater Russet is a medium-late maturing, russet-skinned, potato cultivar suitable for processing or fresh pack. It is notable for having a low incidence of external defects that contributes to its high U.S. No 1 yield relative to the dual-purpose industry standard, Russet Burbank. Clearwater Russet also maintains low glucose concentrations in its tubers during long-term storage making it an exceptional processing variety. With its low incidence of sugar ends and cold-induced sweetening resistance, Clearwater Russet can be stored at a temperature of 7.2°C for up to 250 days without the need for reconditioning; fry color from this storage regime is consistently ≤1.0 (USDA Fry Color Scale). This cultivar is also notable for its high tuber protein content, which was 33% greater than that of Russet Burbank. In full-season trials conducted over a 3-year period in California, Colorado, Idaho, Oregon, and Washington, Clearwater Russet had total yields slightly lower than Ranger Russet and Russet Burbank, but averaged 1% and 33% higher U.S. No. 1 yields, respectively, across all states. Average specific gravity of Clearwater Russet is comparable to Ranger Russet and significantly higher than Russet Burbank. Clearwater Russet is resistant to potato virus X (PVX) and tuber late blight and is moderately resistant to Verticillium wilt, common scab, and the common strain of potato virus Y (PVYO). Symptoms of infection with two necrotic strains of PVY were not observed in tubers of Clearwater Russet or Russet Burbank, but were observed in Ranger Russet. Blackspot bruise reaction for Clearwater Russet is less pronounced than for either Ranger Russet or Russet Burbank. The incidence of hollow heart in Clearwater Russet is intermediate between Ranger Russet and Russet Burbank. Internal brown spot has been noted as a problem for Clearwater Russet in the Columbia Basin of Oregon, but has not been observed as problematic in other growing regions. Clearwater Russet was released in 2008 by the USDA-ARS and the Agricultural Experiment Stations of Idaho, Oregon, and Washington, and is a product of the Pacific Northwest Potato Variety (Tri-State) Development Program.

Keywords

Solanum tuberosum Variety Breeding Processing 

Resumen

Clearwater Russet es una variedad de madurez de intermedia a tardía, de piel corchosa, tanto para proceso como para consumo en fresco. Es notable por tener una baja incidencia de defectos externos que contribuye a su alto rendimiento de US No. 1, en relación con el estándar de Russet Burbank de la industria para doble propósito. Clearwater Russet también mantiene bajas concentraciones de glucosa en sus tubérculos durante almacenamiento por largos períodos haciéndola una variedad excepcional para procesamiento. Con su baja incidencia de azúcares finales y su resistencia al endulzamiento inducido por frío, Clearwater Russet puede almacenarse a temperaturas de 7.2°C por hasta 250 días sin necesidad de reacondicionamiento; el color de freído con este régimen de almacenamiento es consistentemente ≤1.0 (Escala de Color de Freído USDA). Esta variedad también es notable por su alto contenido proteico del tubérculo, que fue 33% mayor que el de Russet Burbank. En ensayos de toda la temporada que se desarrollaron en un período de tres años en California, Colorado, Idaho, Oregon, y Washington, Clearwater Russet tuvo rendimientos totales ligeramente abajo que Ranger Russet y Russet Burbank, pero promedió 1% y 33% más altos rendimientos de US No. 1, respectivamente, en todos los estados. El promedio de la gravedad específica de Clearwater Russet es comparable al de Ranger Russet y significativamente mayor que el de Russet Burbank. Clearwater Russet es resistente al virus X de la papa (PVX) y al tizón tardío de tubérculo, y es moderadamente resistente al marchitamiento por Verticillium, a la roña común, y a la variante común de virus Y de la papa (PVY0). No se observaron síntomas de infección con dos variantes necróticas de PVY en tubérculos de Clearwater Russet o Russet Burbank, pero sí se vieron en Ranger Russet. La reacción de manchas oscuras por golpes para Clearwater Russet es menos pronunciada que para Ranger Russet o Russet Burbank. La incidencia de corazón hueco en Clearwater Russet es intermedia entre Ranger Russet y Russet Burbank. Se ha notado que la mancha café interna es un problema para Clearwater Russet en la rivera del Columbia de Oregon, pero no se ha visto como problemático en otras regiones de cultivo. Se liberó Clearwater Russet en 2008 por el USDA-ARS y por las estaciones experimentales de Idaho, Oregon, y Washington, y es un producto del Programa de Desarrollo de Variedades de Papa del Noroeste del Pacífico (Tri-State o tres estados).

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Copyright information

© Potato Association of America 2010

Authors and Affiliations

  • Richard G. Novy
    • 1
  • Jonathan L. Whitworth
    • 1
  • Jeff C. Stark
    • 2
  • Steve L. Love
    • 3
  • Dennis L. Corsini
    • 4
  • Joe J. Pavek
    • 4
  • M. I. Vales
    • 5
  • Steve R. James
    • 6
  • Dan C. Hane
    • 7
  • Clint C. Shock
    • 8
  • Brian A. Charlton
    • 9
  • Charles R. Brown
    • 10
  • N. R. Knowles
    • 11
  • Mark J. Pavek
    • 11
  • Tina L. Brandt
    • 12
  • Sanjay Gupta
    • 12
  • Nora Olsen
    • 12
  1. 1.U.S. Dept. of Agriculture (USDA)-Agricultural Research Service (ARS)Aberdeen Research & Extension (R & E) CenterAberdeenUSA
  2. 2.Idaho Falls R & E CenterUniversity of IdahoIdaho FallsUSA
  3. 3.Aberdeen R & E CenterUniversity of IdahoAberdeenUSA
  4. 4.Retired from the USDA-ARSAberdeenUSA
  5. 5.Oregon State UniversityCorvallisUSA
  6. 6.Central Oregon Agricultural Research CenterOregon State UniversityMadrasUSA
  7. 7.Hermiston Agricultural R & E CenterOregon State UniversityHermistonUSA
  8. 8.Malheur Experiment StationOregon State UniversityOntarioUSA
  9. 9.Klamath Basin R & E CenterOregon State UniversityKlamath FallsUSA
  10. 10.USDA-ARSProsserUSA
  11. 11.Washington State UniversityPullmanUSA
  12. 12.Twin Falls R & E CenterUniversity of IdahoTwin FallsUSA

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