A Phylogenetic Study of Arabidopsis thaliana Ecotypes and Two Closely Related Species. 12-6 A Phylogenetic Study of Arabidopsis thaliana Ecotypes and Two Closely Related Species. A study was done to explore the phylogenetic relationships between Arabidopsis thaliana ecotypes in separated areas of the world. Experiments have been completed using 10 SSLP microsatellite loci in about 10 individuals from each of 10 A. thaliana ecotype populations from 4 continents, as well as A. griffithiana and A. himalaica .
Initial data supports the hypothesis that North American strains originated in Europe.