Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Domestication and origin of major C3 and C4 crops and cereals. The putative centers of origin for major domesticated grasses are shown with C4 species highlighted in black and C3 species highlighted in yellow. The aridity index is overlaid; blue regions are the least arid and orange regions the most arid. Data for the crop origins were adapted from (Milla, 2020).
