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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 104544
Title Inductie van mutaties bij rijst door röntgenbestraling
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door J. Bekendam
Author(s) Bekendam, J.
Publisher Wageningen : Veenman
Publication year 1961
Description 68 p
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Coolhaas, Prof. Dr. Ir. C. ; Dorst, Prof. Dr. Ir. J.C.
Graduation date 1961-01-13
Dissertation no. 295
Author abstract show abstract
The experiments described were intended to supply the Surinam rice-breeder with material for selection with mutations induced by X-rays and to find the most efficient way of procuring these mutations. The experiments used two of Surinam's commercial rice varieties, Nickerie and Holland.

The monogenic recessive chlorophyll mutations segregating in young X 2 seedlings at the 2-leaf to 4-leaf stage were used as test mutations to investigate the frequency of factor mutations. X-rays induced useful mutations. Some X 2 -mutants which seemed of little use to the breeder, segregated at F 3 to yield further useful mutations.

The author drew several conclusions on method. By harvesting only the X 1 head of the main stalk and the X 1 heads of several of the first-formed primary stalks, which mutate independently of each other, the breeder would probably get the largest possible yield of factor mutations. For this purpose the breeder should set his plants so closely that only these stalks will develop. From the X 1 heads only those with a fertility of 80-100% need be harvested. Useful mutations should be selected in X 2 and in offspring of all lines related to X 2 mutants.

Online full textINTERNET
On paper FORUM ; STACKS ; 303C47
FORUM ; STACKS ; NN08202,295
Keyword(s) (cab) botany / rice / oryza sativa / genetic variation / mutations / plant breeding / radiation / electromagnetic radiation / electricity / magnetism / radioactivity
Categories Rice
Publication type PhD thesis
Language Dutch; Flemish
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