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A FAST‐READING VISCOUS FLOW LEAF POROMETER
Author(s) -
SHIMSHI D.
Publication year - 1977
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1977.tb02162.x
Subject(s) - clamping , aperture (computer memory) , permeability (electromagnetism) , materials science , mechanics , physics , biology , computer science , acoustics , membrane , computer vision , genetics
SUMMARY A field porometer is described for measuring the permeability of amphistomatous leaves. The apparatus is a light (2.8 kg) portable version of Gregory and Pearse's porometer, which enables the operator to read the permeability immediately after clamping the leaf, thus obviating changes of stomatal aperture during measurements. The apparatus has two sensitivity ranges; details on its construction and calibration are presented.