低温锻炼持续时间对菜用甘薯幼苗耐寒生理特性的影响

肖晓, 钟坤权, 屠小菊, 易镇邪

Effects of Low Temperature Acclimation Duration on Cold Tolerance Physiological Characteristics in Vegetable Sweet Potato Seedlings

Xiao Xiao, Zhong Kunquan, Tu Xiaoju, Yi Zhenxie

图1 低温胁迫下不同低温锻炼处理SOD活性变化趋势 SY 72 h：常温适应72 h，XP 0 h：低温胁迫0 h，XP 24 h：低温胁迫24 h，XP 48 h：低温胁迫48 h，XP 72 h：低温胁迫72 h；小写字母表示同一处理在不同处理时段差异显著（P < 0.05）；大写字母表示同一时期不同处理间差异显著（P < 0.05），下同。

Fig.1 Trend of SOD activity in different low-temperature acclimation treatments under low-temperature stress SY 72 h: normal temperature adaptation 72 h, XP 0 h: low temperature stress 0 h, XP 24 h: low temperature stress 24 h, XP 48 h: low temperature stress 48 h, XP 72 h: low temperature stress 72 h; Lowercase letters indicate significant differences in the same processing in different periods (P < 0.05); uppercase letters indicate significant differences between different processing in the same period (P < 0.05), the same below.