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American Potato Journal

, Volume 73, Issue 6, pp 249–260 | Cite as

Agronomic performance of potato germplasm selected for high resistance to verticillium wilt

  • Dennis Corsini
  • Joseph J. Pavek
Article

Abstract

A three-year study was conducted from 1991 through 1993 to evaluate the field performance of potato clones that had been selected for resistance to wilt symptom development and stem colonization byVerticillium dahliae. The total yield, size distribution, and specific-gravity of these highly resistant clones were compared with standard cultivars and two parent clones with high Verticillium resistance and high yield, A66107-51 and A68113-4. Two groups of Verticillium resistant germplasm were selected in 1991. One group was the highly resistant progeny from a cross between A66107-51 and A68113-4. The second group consisted of hybrids between wild species accessions with high Verticillium resistance and cultivated diploid and tetraploid germplasm.

Twenty-one out of 125 progeny clones from the A66107-51 × A68113-4 cross were highly resistant to Verticillium infection and were tested in yield trials for two years. Another eight selections had high Verticillium resistance but such low yield of seed tubers that they were tested only one year for yield. Eleven of the original 29 highly resistant selections were significantly lower in total yield than Russet Burbank. Only one clone was significantly higher in yield than RB, and none outyielded either of the resistant parents. Reddale and Century Russet had moderate to high Verticillium resistance, respectively. Both outyielded Russet Burbank and were comparable with the high yielding resistant parents. Of 15 interspecific hybrids tested in 1991, only four had sufficient yield to produce seed for yield trials and good wilt resistance after three successive seasons of evaluation. We concluded from this study that selecting at early stages of variety development strictly for Verticillium resistance is likely to be inefficient. Rather, selection should be for yield and other agronomic criteria in Verticillium infested fields.

Additional Key Words

Solanum tuberosum potato breeding potato early dying 

Compendio

En un estudio de tres años, llevado a cabo desde 1991 hasta 1993, se evaluó el comportamiento en el campo de clones de papa previamente seleccionados para resistencia al desarrollo de síntomas de marchitez y colonization del tallo causados porVerticillium dahliae. El rendimiento total, la distributión del tamaño y la gravedad específica de estos clones altamente resistentes se compararon con los de cultivares estándares y de dos clones progenitores, A66107-51 y A68113-4, con alta resistencia aVerticillium y alto rendimiento. En 1991 fueron seleccionados dos grupos de germoplasma resistente aVerticillium. Un grupo era la progenie altamente resistente del cruzamiento entre A66107-51 y A68113-4. El segundo grupo consistía en los híbridos obtenidos de entradas de especies silvestres con alta resistencia aVerticillium y germoplasma cultivado diploide y tetraploide. De los 125 clones de la progenie del cruzamiento entre A66107-51 y A68113-4, 21 fueron altamente resistentes a la infección porVerticillium y se probaron en ensayos de rendimiento durante dos años. Otras ocho selecciones tuvieron alta resistencia pero un rendimiento de tubérculos-semilla tan bajo que sólo fueron probados para rendimiento durante un año. Once de las 29 selecciones originales, altamente resistentes, tuvieron un rendimiento total significativamente menor que el de Russet Burbank (RB). Sólo un clon tuvo un rendimiento significativamente más alto que el de RB y ninguno superó el rendimiento de los progenitores resistentes. Reddale y Century Russet mostraron una resistencia aVerticillium moderada a alta, respectivamente. Ambas superaron el rendimiento de RB y tuvieron un rendimiento comparable con el de los progenitores resistentes de alto rendimiento. De los 15 híbridos interespecíficos probados en 1991, sólo cuatro tuvieron un rendimiento suficiente para producir semilla para los ensayos de rendimiento y buena resistencia a la marchitez después de tres temporadas sucesivas de evaluatión. De este estudio concluimos que no es eficiente seleccionar en etapas tempranas axclusivamente para resistencia aVerticillium. En lugar de eso, la selectión debe hacerse para rendimiento y otros criterios agronómicos en campos infestados conVerticillium.

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Copyright information

© Springer 1996

Authors and Affiliations

  • Dennis Corsini
    • 1
  • Joseph J. Pavek
    • 1
  1. 1.USDA-ARS, University of Idaho Research and Extension CenterAberdeen

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