Fig. 7
Experimental design of cold acclimation in M. denudata. A room temperature of 22 °C was served as the control (N1) and then M. denudata buds were treated at low temperature of 12 °C (CA1), 4 °C (CA2), 0 °C (CA3), and − 4 °C (CA4) for seven sequential days. Two days were left for cooling slowly in temperatures incubator between two groups