Climatic diversity and ecological descriptors of wild tomato species (Solanum sect. lycopersicon) and close related species (solanum sect. juglandifolia y sect. lycopersicoides) in Latin America

Gabriela Ramírez-Ojeda, Iris E. Peralta, Eduardo Rodríguez-Guzmán, José Luis Chávez-Servia, Jaime Sahagún-Castellanos, Juan Enrique Rodríguez-Pérez

Research output: Contribution to journalArticlepeer-review

Abstract

Conservation and sustainable use of species diversity require a description of the environment where they develop. The objectives were to determine ecological descriptors and climatic diversity of areas along the distribution range of 12 species of wild tomatoes (Solanum sect. Lycopersicon) and four wild species of phylogenetically related groups (Solanum sect. Juglandifolia and sect. Lycopersicoides), as well as their ecological similarity in Latin America. With 4228 selected tomato accessions and an environmental information system (EIS) composed of 21 climatic variables, diversity patterns of the distribution areas were identified for each species, as well as ecological descriptors through the use of geographic information systems (GIS). The contribution of climatic variables to the species geographical distribution was identified by principal component analysis (PCA), and similarity in species distribution as a function of the variables identified with cluster analysis (CA). Climatic characteristics and the environmental amplitude of wild tomatoes and related species along their distributional range were satisfactorily determined by ecological descriptors. Eleven climate types were identified, predominantly BSk (arid, steppe, cold), BWh (arid, desert, hot), and Cfb (temperate, no dry season, warm summer). PCA determined 10 most important variables were the most important for the geographical distribution. Six groups of species were identified according to CA and climatic distribution similarity. This approach has shown promissory applications for biodiversity conservation of valuable genetic resources for tomato crop breeding.

Original languageEnglish
Article number855
JournalPlants
Volume10
Issue number5
DOIs
StatePublished - May 2021

Keywords

  • Climatic diversity
  • Ecological descriptors
  • Environmental amplitude
  • Genetic resources
  • Wild tomato species

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