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 104122
Title Factors affecting absorption and transport of potassium in maize roots
show extra info.
[door] W.G. Keltjens
Author(s) Keltjens, W.G.
Publisher Wageningen : Pudoc
Publication year 1978
Description 103 p.
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
ISBN 902200662X
Tutors Vervelde, Prof. Dr. Ir. G.J.
Graduation date 1978-04-26
Dissertation no. 720
Author abstract show abstract
Before short-term absorption experiments, excised roots of young maize plants were differently treated to alter properties like membrane permeability and concentrations of organic and inorganic compounds. Subsequently, influx and efflux of potassium ions were estimated during the initial and the steady-state phase. In other experiments, absorption and translocation of K + were estimated simultaneously in excised roots of young plants and in decapitated roots of maize plants 5 weeks old. Absorption, accumulation and upward transport of potassium in maize roots were closely linked. Freshly absorbed potassium was accumulated initially but, with time, internal salt concentration, osmotic pressure and upward xylem transport (exudation) steadily increase. During the steady-state phage, rate of uptake and transport of K + to aerial parts were equal and K + did not accumulate in maize roots. Freshly absorbed K + was immediately transported upwards or exchanged with K + already present in the root cells and then temporarily accumulated in root cell vacuoles before being transported longitudinally.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08202,720
FORUM ; STACKS ; NN08200,720
Keyword(s) (cab) botany / maize / soil science / zea mays
Categories Maize
Publication type PhD thesis
Language English
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