Fig. 4From: Standardization of electrolyte leakage data and a novel liquid nitrogen control improve measurements of cold hardiness in woody tissueVisual cambial damage corresponded to critical cold hardiness estimated from electrolyte leakage data. Values of T50 given here (Table 1) are calculated using the Limlogistic approach. Representative stem samples following freezing are shown for A Acer caudatifolium, B A. davidii, C A. hyrcanum, and D A. negundo. Scale bar = 0.5 cmBack to article page