A map of Israel showing isohyets of multiyear averages of annual rainfall amount (mm), distribution of <i>T</i>. <i>diccocoides</i> and the four study populations (a); and proportions of seeds of different origin four years after planting in each of the four locations in the reciprocal transplant experiment (b).

<p>Dots mark known populations of <i>T</i>. <i>diccocoides</i> based on data of the Institute for Cereal Improvement (Israel). Grey bars denote experimental populations that got extinct. Total number of seeds per experimental population is shown above the bar.