Image (IMAGE) Science China Press Caption Locations of�O. rufipogon�(blue) and�O. nivara�(red) populations used in this study. The�green star and�cross�indicate�the locality where�the common garden experiment and�the artificial crossing were�performed, respectively.� Credit �Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.