Library Catalogue

Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104395
Title The effects of environmental factors on the transpiration of leaves, with special reference to stomatal light response
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door P.J.C. Kuiper
Author(s) Kuiper, P.J.C.
Publisher Wageningen : Veenman
Publication year 1961
Description 49 p ill
Series title Mededelingen Landbouwhogeschool Wageningen (61-7)
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Wassink, Prof. Dr. E.C.
Graduation date 1961-06-30
Dissertation no. 308
Author abstract show abstract
The transpiration of cut leaves (bean, tomato, Hyoscyamus ) in potometers was studied as affected by light intensity, leaf temperature and air humidity, with special attention to stomatal light response. Fick's diffusion law could be applied to evaporation of water and to transpiration of leaves. Evaporation was found to be proportional to Vα(V = wind velocity),αbeing 0.76 in turbulent air. Transpiration rate increased rectilinearly with light intensity below 5 x 10 4erg sec. -1cm -2, mainly through increase in leaf temperature by radiation with incandescent light, containing much infrared radiation; with fluorescent tubes, sodium lamps, or high- pressure mercury vapour lamps, transpiration increase was mainly due to increase in stomatal opening. Stomatal resistance to diffusion could be exactly determined by measurements on transpiration, leaf temperature and air humidity. Transpiration increases at higher light intensities (saturation) were entirely due to increase in leaf temperature.

Regulation of transpiration by small changes in stomatal resistance to diffusion was most pronounced at small stomatal apertures. In normal air, the stomatal response to light depended on photosynthesis of the guard cell chloroplasts (use of CO 2 ) and the response of the guard cells to CO 2 (stomatal feed back, causing fluctuations in the degree of stomatal opening).

Online full textINTERNET
On paper FORUM ; STACKS ; NN08202,308
Keyword(s) (cab) transpiration / evapotranspiration
Categories Plant Physiology
Publication type PhD thesis
Language English
About cum laude graduation (with distinction)
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