Library Catalogue

Library Catalogue

  • external user (warningwarning)
  • Log in as
  • About the Catalogue

    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 104542
Title Some aspects of photoperiodism in rice (Oryza sativa L.)
show extra info.
door R. Best
Author(s) Best, R.
Publisher Amsterdam : Elsevier
Publication year 1961
Description 87 p.
Notes ch. 24 en 25 uit het boek "Physiology of the rice crop" van dezelfde uitgever  show all notes
Proefschrift Wageningen
Tutors Coolhaas, Prof. Dr. Ir. C.
Graduation date 1961-01-27
Dissertation no. 297
Author abstract show abstract
Photoperiodism was studied in 417 rice varieties of which 28, selected by differences in photoperiodic response, were studied in more detail. The plants were usually grown under 16 different photoperiods ranging from 5 to 24 h. In detailed experiments the types of response to short and long days were studied and each developmental stage of the plant from germination until grain maturation was examined separately. Particular attention was given to the juvenile phase, photoperiodic induction, reproductive development, varietal classification, and the construction of response curves. Response was plotted as time from sowing to floral initiation on the ordinate against photoperiod used on the abscissa. These curves gave much information on photoperiodic response of the varieties used.

Much detailed work was devoted to specific light effects such as: the perception of the photoperiod, the effects of alternating, increasing and decreasing photoperiods, light intensities, wave-length dependence, interrupted light and dark periods. The experimental data were used to interpret the photoperiodic response of rice plants grown in natural daylengths. Seasonal changes in cloudiness (monsoons) shortened twilight and daylength, thereby markedly affecting the time of flowering in very sensitive varieties.

Online full textINTERNET
On paper FORUM ; STACKS ; 303C51
FORUM ; STACKS ; NN08202,297
Keyword(s) (cab) rice / oryza sativa / photoperiodism / light / photoperiod / shade
Categories Rice
Publication type PhD thesis
Language English
About cum laude graduation (with distinction)
There are no comments yet. You can post the first one!
Post a comment

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.