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Homoploid hybridization in the origin and evolution of wild diploid potato species

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Abstract

The potatoes, Solanum L. section Petota Dumortier, are a group of species that possess a very broad range of biological diversity, and a wide geographical distribution in the Americas. These species constitute euploid series with somatic chromosome numbers ranging from 2n = 2x = 24 to 2n = 6x = 72. Although special attention has been given to the origin of polyploid potato species, principally the cultivated forms, that are major food crops, and hybridization has been accepted as an important evolutionary force in the section, the mechanisms involved in the origin and evolution of the diploid species have not been elucidated. Herein, we propose that homoploid hybridization is the main mechanism involved in the origin and evolution of the diploid potato species, and discuss the evidences that support our proposal.

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Authors and Affiliations

  1. Laboratorio de Biología Molecular, INTA La Consulta, CONICET, A. Brown 500 (M5528AHB) Chacras de Coria, Mendoza, Argentina

    Ricardo W. Masuelli

  2. EEA Balcarce, INTA and Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata (UNMdP), C.C. 276 (7620) Balcarce, Buenos Aires, Argentina

    Elsa L. Camadro & María C. Bedogni

  3. EEA Famaillá, INTA, Ruta Prov. 301 km 32-C.C. 9, CP 4132, Tucumán, Argentina

    Luis E. Erazzú

  4. Laboratorio de Biología Molecular, Facultad de Ciencias Agrarias, U.N. de Cuyo, A. Brown 500 (M5528AHB) Chacras de Coria, Mendoza, Argentina

    Carlos F. Marfil

  5. Estación Experimental Agropecuaria (EEA) La Consulta, Instituto Nacional de Tecnología Agropecuaria (INTA) and Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Mendoza, Argentina

    Ricardo W. Masuelli

  6. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

    Ricardo W. Masuelli, Elsa L. Camadro, María C. Bedogni & Carlos F. Marfil

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  1. Ricardo W. Masuelli
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  2. Elsa L. Camadro
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  3. Luis E. Erazzú
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  4. María C. Bedogni
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  5. Carlos F. Marfil
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Correspondence to Ricardo W. Masuelli.

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Masuelli, R.W., Camadro, E.L., Erazzú, L.E. et al. Homoploid hybridization in the origin and evolution of wild diploid potato species. Plant Syst Evol 277, 143–151 (2009). https://doi.org/10.1007/s00606-008-0116-x

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