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 104313
Title Omzettingen van koolhydraten in het blad van Nicotiana tabacum L.
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door Dirk Tollenaar
Author(s) Tollenaar, D.
Publisher Wageningen : Veenman
Publication year 1925
Description 142 p.
Series title Mededeling / Laboratorium voor Plantenfysiologisch Onderzoek (12)
Notes Proefschrift Wageningen
Tutors Aberson, Prof. Dr. J.H.
Graduation date 1925-03-06
Dissertation no. 17
Author abstract show abstract
Nicotiana tabacum L. was chosen as an experimental plant for several practical reasons. The plants were grown in large pots in a glasshouse at 22 °C and great humidity in February-March and September-October until 4 normal leaves were present. Each day at 16.00 h the plants were brought into darkness at 28 °C which made them completely free of starch at 10.00 h next morning. At this moment assimilation and other experiments were started.

These experiments studied: formation of starch by assimilation at 28 °C; formation of starch from sugar solutions at 28 °C or at 1.5 °C; the significance of carbohydrates for transport of substances in the leaf; the conversion of starch at different temperatures; the accelerated starch breakdown with drying and other related phenomena; the small starch conversion in tobacco with leaf mosaic and in other virus-diseased plants; the changes occurring with drying and fermentation, particularly in carbohydrate content.

To kill the enzymes before drying, the plucked leaves after weighing were first treated with boiling ethanol. The further treatment of the leaf extract and the methods of estimating sugars and starch were extensively described. The results of the analyses were thoroughly considered.

Online full textINTERNET
On paper FORUM ; SPEC.COLL. ; A2696,1925,4
FORUM ; SPEC.COLL. ; A2696,1925,4
FORUM ; STACKS ; NN08202,17
FORUM ; STACKS ; NN00276,0012
Keyword(s) (cab) nicotiana / tobacco / solanaceae / carbohydrate metabolism / metabolism / plant nutrition / assimilation / chemical analysis / exposure / environmental degradation / kinetics / ecotoxicology
Categories Stimulant Crops
Publication type PhD thesis
Language Dutch; Flemish
About cum laude graduation (with distinction)
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