Fig. 1
From: Â Exchanges of economic plants along the land silk road
Migration routes of 19 important crops along the Land Silk Road based on different lines of evidence. a. Tibetan barley; b. Mustard; c. Barley and Wheat; d. Walnut; e. Chickpea; f. Cauliflower; g. Grape; h. Apple; i. Cucumber; j. Turnip; k. Lettuce; l. Mulberry; m. Pea; n. Jujube; o. Pistachio; p. alfalfa; q. Buckwheat; r. Spinach. Short dashed arrow indicates archaeology; long dashed arrow indicates evidence based on genetics data; solid arrow indicates genomics data; shaded area represents place of origin (Map from http://bzdt.ch.mnr.gov.cn/index.html)