Soybean iron deficiency chlorosis (IDC) is a common stress in commercial production especially under high pH, wet, poorly aerated and cool soil conditions. With the funding from MPSG, 62 advanced soybean breeding lines from AAFC-ECORC and 160 germplasm materials were evaluated at Emerson in last three years. Due to the dry field conditions, no significant chlorosis occurred in 2012. However, significant variation was observed in the lines tested in 2013 and 2014. The advanced breeding lines generally showed good resistance to IDC, indicating genetic improvement though breeding selections. Resistant and susceptible materials were identified for use in breeding and genetic research.
