Ecological descriptors of wild tomato species (Solanum sect. Lycopersicon) and close related species (Solanum sect. Juglandifolia and sect. Lycopersicoides) in Latin America

RAMÍREZ-OJEDA G. ; RODRÍGUEZ-PÉREZ J.E.; PERALTA I.E.; SAHAGÚN-CASTELLANOS J.; RODRÍGUEZ-GUZMÁN E.; CHÁVEZ-SERVIA J.L

Cornell

Congreso; SOL INTERNATIONAL ONLINE MEETING 2020; 2020

Sol Genomics Network

For conservation and sustainable use of species diversity, it is essential to characterize the environments where they develop. The objective of this research was to identify the edaphoclimatic diversity of the accessions sites of 12 species of wild tomatoes (Solanum sect. Lycopersicon) and 4 species of phylogenetically related groups (Solanum sect. Juglandifolia and sect. Lycopersicoides) using ecological descriptors of representative specimens in Latin America. Using 5,013 representative accessions and an Environmental Information System composed of 21 climatic variables (19 bioclimatic variables from WorldClim, annual evapotranspiration and altitude), and 10 edaphic variables (pH, CEC, SB, Salinity, Sodicity, Percentage of lime, clay and sand, Bulk density, TEB) in raster format with spatial resolution of 900 m, ecological descriptors (mean, maximum and minimum values) were identified through the use of geographic information systems. Subsequently, the importance and association of the variables in the geographic distribution (Principal Component Analysis) was determined, as well as the similarity of the species due to their distribution as a function of the climatic variables (Cluster Analysis). The results provided current information on the climatic conditions and the environmental breadth of the distribution of the populations of 12 species of wild tomatoes and 4 species of phylogenetically related groups.