A stem that is covered with soil for rooting while still part of the living plant. 压条将枝条埋在土中使其生根，而同时又是存活的母体植物的一部分
Shrinkage or contraction of the protoplasm away from the wall of a living plant or bacterial cell, caused by loss of water through osmosis. 胞质皱缩通过渗透作用由于缺水引起的活植细胞或细菌的细胞质的皱缩或收缩，并与细胞壁分离
