Purdue Researchers Pinpoint Gene for Soybean Semideterminacy (image) Purdue University Share Print E-Mail Caption Doctoral student Jieqing Ping, at left, and agronomy professor Jianxin Ma examine soybeans in a greenhouse at Purdue University. Credit Purdue University / Tom Campbell Usage Restrictions Please credit Purdue University / Tom Campbell. Share Print E-Mail 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.