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Potato Research

, Volume 32, Issue 2, pp 181–195 | Cite as

Wild tuber-bearing species ofSolanum and incidence ofPhytophthora infestans (Mont.) de Bary on the western slopes of the volcano Nevado de Toluca. 1.Solanum species

  • A. Rivera-Peña
  • J. Molina-Galan
Article

Summary

During the period 1982–87, wildSolanum species were surveyed in an area of 15000 ha by observations and collections along five long (10 km) transects covering altitudes from 2900 to 3900 m, and twelve short (300 m) transects. The sevenSolanum species,demissum (dms), verrucosum (ver), iopetalum, brachycarpum, x edinense, stoloniferum and an unidentified species, possibly a sterile hybrid betweendms andver, grew patchily and their many small colonies formed part of a complex plant community that changed in composition with altitude and topography. The most frequent species wasdms (80%), while other species often grew in mixed colonies with it. As the altitude increased, so did the distances between colonies, whereas species diversity decreased and above 3500 m onlydms was found. Most species propagated both clonally, through tubers on long stolons, and sexually through botanical seed.

Additional key words

Solanum demissum S. verrucosum S. iopetalum S. brachycarpum S. x edinense S. stoloniferum 

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • A. Rivera-Peña
    • 1
  • J. Molina-Galan
    • 2
  1. 1.Instituto Nacional de Investigaciones Forestales y Agropecuarias (INIFAP)Secretaria de Agricultura y Recursos Hidráulicos (SARH)México CityMexico
  2. 2.Centro de Genética, Colegio de Postgraduados, Secretaria de Agricultura y Recursos Hidráulicos (SARH)Estado de MéxicoMexico

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