Drought-Resistant Grape Rootstock Traits Identified

University of California, Davis, researchers tested eight commercial varieties of grape rootstocks under drought conditions to identify traits that might indicate drought resistance. They found that rootstocks with a lower capacitance (less root shrinkage) were better able to maintain photosynthesis during drought than other rootstocks. “This research gives us a new trait to target for breeding more drought tolerant rootstocks,” study co-author and Ph.D. student Gabriela Sinclair said.