Wed - February 22, 2017
by Randall Nelson, USDA-ARS, University of Illinois
We crossed cultivated soybean (Glycine max
) with a distant perennial relative, Glycine tomentella
, and were the first to test derived lines. The best line yielded 7 bu/ac greater than the soybean parent, Dwight. We also crossed cultivated soybean with wild annual soybean (Glycine soja
) and identified lines that were equal in yield to the soybean parent, seven days earlier in maturity, yet had 50% of the wild parent DNA based on analysis with DNA markers. This work indicates that very useful yield genes exist in wild relatives of cultivated soybean which are not yet being used in commercial soybean breeding today.