Shoot meristem development in F
progeny from 28 accessions of Arabidopsis crossed to Ler zll-1. Columns present the proportion of zll-1 homozygous seedlings showing a stem cell termination phenotype. Error bars show standard deviation after four independent seedling counts. The country of origin for each accession is indicated. US, United States of America, CA, Canada, CV, Cape Verde Islands, PT, Portugal, ES, Spain, GB, United Kingdom, BE, Belgium, NL, Netherlands, FR, France, IT, Italy, DE, Germany, CZ, Czech Republic, RU, Russia, TJ, Tajikistan.