American Journal of Potato Research

, Volume 95, Issue 2, pp 178–182 | Cite as

Germplasm Release: Three Tetraploid Potato Clones with Resistance to Common Scab

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Abstract

Common scab caused by the soil-borne bacterium Streptomyces scabies is a serious disease for the potato industry. We have identified a strong source of resistance in the diploid wild relative Solanum chacoense. This resistance has been introgressed into tetraploid cultivated potato via unilateral sexual polyploidization. This paper describes three hybrid clones (M8, M16, M17) for use by potato breeding programs to enhance resistance to common scab. They were created by crossing a diploid clone (50% S. tuberosum, 50% S. chacoense) to tetraploid cultivars, producing hybrids with 75% cultivated and 25% wild germplasm. The clones are male and female fertile, and are adapted to temperate zone production environments.

Keywords

Solanum tuberosum Solanum chacoense Wild germplasm Streptomyces scabies Disease resistance Unilateral sexual polyploidization 

Resumen

La roña común, causada por la bacteria del suelo Streptomyces scabies, es una enfermedad seria para la industria de la papa. Nosotros hemos identificado una fuente fuerte de resistencia en su pariente silvestre diploide Solanum chacoense. Esta resistencia ha sido introducida en la papa cultivada tetraploide por vía de poliploidización sexual unilateral. Este artículo describe tres clones híbridos (M8, M16, M17) para uso por programas de mejoramiento de papa para aumentar la resistencia a la roña común. Fueron creados mediante las cruzas de un clon diploide (50% S. tuberosum, 50% S. chacoense) para variedades tetraploides, produciendo híbridos con 75% de germoplasma de cultivo y 25% de silvestre. Los clones son fértiles como masculino y femenino y se adaptan a ambientes de zonas templadas de producción.

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Copyright information

© The Potato Association of America 2018

Authors and Affiliations

  1. 1.USDA-ARS and Department of HorticultureUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Michigan State UniversityEast LansingUSA
  3. 3.USDA-ARSBeltsvilleUSA

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