Fig. 4
From: Mapping freezing tolerance QTL in alfalfa: based on indoor phenotyping
Winter frost tolerant (left) and sensitive (right) alfalfa F1 progenies. The sensitive alfalfa has very distinct frost damage symptoms. The image was taken after frost occurrence in the first week of March 2017 at Watkinsville, GA. Before the frost, the winter was mild, and the alfalfa had gained sufficient regrowth