Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525646
Title Inductie van mutaties bij rijst door röntgenbestraling
Author(s) Bekendam, J.
Source University. Promotor(en): C. Coolhaas; J.C. Dorst. - Wageningen : Veenman - 68
Publication type Dissertation, internally prepared
Publication year 1961
Keyword(s) plantkunde - rijst - oryza sativa - genetische variatie - mutaties - plantenveredeling - straling - elektromagnetische straling - elektriciteit - magnetisme - radioactiviteit - botany - rice - genetic variation - mutations - plant breeding - radiation - electromagnetic radiation - electricity - magnetism - radioactivity
Categories Rice
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.
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