摘要
用PV 曲线技术对三种木本植物木麻黄、湿地松、异叶南洋衫的水分状况进行比较. 结果表明:抗旱性较强的湿地松水饱和时的渗透势φ100π 和初始质壁分离时的渗透势φ0π及总体体积弹性模量ε都较低. 在植物水分关系研究中, RWC, ROWC, RDW 和Ap, ε和Vo 等水分参数具有重要意义.
The water relations of three tree woody species Casuarina Equisetifolia, Pinus elliottii and Araucaria heterophylla were studied by using the pressure-volume technique.The results showed that the whole osmotic potential φ 100 π , the osmotic potential φ 0 π at the primary plasmolysis state and the total volume elasticity modulus ε were low in the the stronger drought tolerance species and that could be used as physiological index for comparing the drought tolerance of trees.The value of water parameters RWC, ROWC, RDW ,Ap,ε and Vo were important for estimating the water status.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
1999年第4期71-75,共5页
Journal of Fujian Normal University：Natural Science Edition
基金
福建省教委基金
关键词
PV曲线
水分参数
木麻黄
湿地松
木本植物
pressure-volume technique,water parameters, Casuarina Equisetifolia, Pinus elliottii, Araucaria heterophylla
