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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 104523
Title Influences of temperature on Arachis hypogaea L. : with special reference to its pollen viability
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door J.F. de Beer
Author(s) Beer, J.F. de
Publisher Wageningen : Pudoc
Publication year 1963
Description 81 p ill
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
ISBN 9022000869
Tutors Ferwerda, Prof. Dr. Ir. J.D.
Graduation date 1963-05-01
Dissertation no. 344
Author abstract show abstract
The influence was investigated of temperature on growth and development of groundnut, cv. Schwarz 21, Mallorca and Ukraine. Except where stated, all conclusions refer to Schwarz 21. Seed germination was not seriously influenced between 24° and 33°C, although the higher temperatures favoured germination and seedling development (Mallorca needed lower temperatures). Constant 33° gave longest stems, most leaves, greatest area of foliage and so higher dry weights of aerial plant parts, but decreased pod production. At 24° vegetative growth was less, despite larger leaves and more pods. The optimum seemed to be 28°. The change from 24° to 33° and from 33° to 24° at various developmental stages showed vegetative growth and flowering complementing each other. Together, however, they competed with fruit set. At 33° the calyx tube was longer and so was the distance travelled by the pollen to effect fertilization. Warmth 36-96 h before flowers opened decreased pollen number and viability. Flowers did not last so long. Vegetative growth was more promoted than generative growth. These observations together probably largely explain the poor setting of fruit at high temperatures. Pollen viability seemed influenced by day and hour of sampling but not by boron sprays.
Online full textINTERNET
On paper FORUM ; STACKS ; NN08202,344
FORUM ; STACKS ; NN08200,344
Keyword(s) (cab) arachis hypogaea / groundnuts / botany
Categories Groundnuts
Publication type PhD thesis
Language English
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