Figure 1.

Map of collected accessions of the PSPPC. Of 431 P. sativum accessions studied, 238 were collected from 52 countries. The remaining accessions were donated to the collection from an unknown origin or developed by plant breeders. Circles indicate accessions in the original PSP collection and triangles indicate accessions from the Chinese core collection. Diamonds indicate remaining accessions. Colors correspond to genetic groupings discussed later herein: P. sativum subsp. elatius (green), P. sativum subsp. abyssinicum (gray), P. sativum subsp. sativum—Primary (gold), P. sativum—Central Asia (dark blue) and P. sativum subsp. sativum—non-Mediterranean Asia (red).