干旱胁迫下乔木状沙拐枣枝干光合作用对水力性状与叶片光合作用的影响

李民青, 周孝明, 王双龙, 陈丽丹, 李从娟, 刘冉

Effects of stem photosynthesis on hydraulic traits and leaf photosynthesis in Calligonum arborescens under drought stress

LI Min-Qing, ZHOU Xiao-Ming, WANG Shuang-Long, CHEN Li-Dan, LI Cong-Juan, LIU Ran

图7 乔木状沙拐枣枝干光合抵抗干旱的概念示意图。叶片光合速率单位μmol·m-2·s-1, 枝干非结构性碳水化合物(NSC)含量单位mg·g-1。TD0, 干旱初始; TD15, 干旱15天后; TD30, 干旱30天后。15天和30天下降比例均相对于干旱初始。PLC, 导度损失率; NSC, 非结构性碳水化合物。

Fig. 7 Conceptual diagram illustrating stem photosynthesis of Calligonum arborescens resistance drought stress. The unit of leaf photosynthesis is μmol·m-2·s-1, and the unit of non-structural carbohydrate content is mg·g-1. TD0, initial drought; TD15, after 15 d of drought; TD30, after 30 d of drought. The proportion of TD15 and TD30 decline is relative to TD0. PLC, percentage loss of conductivity; NSC, non-structural carbohydrates.