RELATIONSHIPS OF LEAF DIFFUSION RESISTANCE OF POPULUS CLONES TO LEAF WATER POTENTIAL AND ENVIRONMENT

被引：27

作者：

PALLARDY, SG

KOZLOWSKI, TT

机构：

[1] Department of Forestry, University of Wisconsin, Madison, 53706, Wisconsin

来源：

OECOLOGIA | 1979年 / 40卷 / 03期

关键词：

D O I：

10.1007/BF00345333

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Leaf diffusion resistance (r1) of the upper and lower leaf surfaces of several Populus clones was related to leaf water potential (ψ1), light intensity, vapor pressure deficit (VPD), and temperature by intrinsicallylinear, logarithmic multiple regression analyses. Regression equations accounted for up to 80% of variation in r1 data. Light intensity and VPD varied among clones in importance in influencing r1. Pronounced sensitivity of r1 of certain clones to VPD was related to drought resistance in their parentage. Increasing r1 was significantly positively correlated with ψ1, in apparent contradiction to prevailing concepts of stomatal response to water status, and this relationship was probably attributable to effects of other environmental variables on ψ1 and r1. Leaf resistance decreased after a storm characterized by winds in excess of 160 km·h-1. Cuticular disruption and altered stomatal response may have been responsible for the storminduced r1 decrease. © 1979 Springer-Verlag.

引用

页码：371 / 380

页数：10

共 34 条

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