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 525543
Title Factors affecting seed set in brussels sprouts, radish and cyclamen
Author(s) Murabaa, A.I.M. El
Source University. Promotor(en): S.J. Wellensiek. - Wageningen : Veenman - 34
Publication type Dissertation, internally prepared
Publication year 1957
Keyword(s) brassica oleracea var. gemmifera - spruitjes - raphanus sativus - radijsjes - sierplanten - zaadzetting - zaden - formatie - plantenfysiologie - plantenontwikkeling - vruchten - rijp worden - primulaceae - brussels sprouts - radishes - ornamental plants - seed set - seeds - formation - plant physiology - plant development - fruits - ripening
Categories Stem Vegetables
Abstract If brussels sprouts were, self-fertilized, seed setting increased with age of the flower buds until a maximum some days before buds opened. After that, set decreased rapidly. Warmth shortened the period over which selfing was possible and shortened the period to the opening of the flowers. Most seeds occurred in 7-9 mm long buds.

In crossing, seed set did not decrease just before flowers opened. Warmth shortened the fertilization period. Before flower opening a period (shorter with warmth) existed during which selfing and crossing gave the same results. Crossing after opening of the flowers first increased seed set, later decreased it. This fertilization period was also shortened with warmth.

The inhibition of pollen germination by the style of incompatible plants occurred some days before opening of the buds. With opening it reached a maximum, after that it decreased and disappeared. Application ofα-naphthylacetamide did not overcome incompatibility.

The data on pollination period of radish only showed a few differences from those on brussels sprouts.

Cyclamen had no incompatibility. Fruits always contained seeds. Many peduncles rotted prematurely and many fruits were lost. Emasculation favoured this rotting and in some varieties decreased the number of seeds per fruit. Application of alfa-naphthylacetamide after castration increased seed -set, stimulated elongation of the peduncles and decreased rotting.

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