STOMATAL PATCHINESS IN CONIFERS - EXPERIMENTS WITH PICEA-ABIES (L) KARST AND ABIES-ALBA MILL

被引：13

作者：

BEYSCHLAG, W

KRESSE, F

RYEL, RJ

PFANZ, H

机构：

[1] Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl Botanik II, Würzburg, D-97082

来源：

TREES-STRUCTURE AND FUNCTION | 1994年 / 8卷 / 03期

关键词：

ABA; ABIES-ALBA; CARBOXYLATION EFFICIENCY; STOMATAL PATCHINESS; PICEA-ABIES;

D O I：

10.1007/BF00196637

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Strong evidence for the occurrence of pronounced stomatal patchiness in needles of Picea abies (L.) Karst. and Abies alba Mill. was found using various indirect methods. Anatomical investigations revealed a septate leaf anatomy for both species, a phenomenon expected if a patchy distribution of stomatal aperture is present. Calculation of some photosynthetic characteristics (e.g. carboxylation efficiency) from gas exchange measurements is shown to be markedly affected by the patchy distribution of stomatal apertures on the needles. The importance of stomatal patchiness in connection with air pollution related forest decline symptoms as well as an hypothesis suggesting a possible role of the phenomenon as a protective mechanism against photoinhibition are discussed.

引用

页码：132 / 138

页数：7

共 34 条

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