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 525630
Title Dormancy and sprouting in gladiolus
Author(s) Apte, S.S.
Source University. Promotor(en): S.J. Wellensiek. - Wageningen : Veenman - 48
Publication type Dissertation, internally prepared
Publication year 1962
Keyword(s) sierplanten - iridaceae - ornamental plants
Categories Ornamental Plants
Abstract The onset, level and disappearance of dormancy in corms and cormels of summer- flowering gladiolus cultivars were studied in relation to environmental conditions and revaluated as an ecological adaption. The cormels were more deeply dormant than their sister corms, which were most dormant when formed at higher temperatures and in longer photoperiods. The depth of dormancy therefore varied from year to year and from cultivar to cultivar. Dormancy disappeared during dry storage at all temperatures between 6° and 27°C but quickest at 6° or 10°C. These low temperatures were essential to keep cormels out of dormancy. Dormancy was not broken at any single temperature in moist soil; temperatures alternating between 10° and 22° were necessary. Sprouting of the cormels varied with the state of their shell and size. No correlation was found with respiration although CO 2 production of cormels with broken shells was 6-16 times as high as in intact cormels. The different depths of dormancy at planting were maintained throughout a long period in moist soil at 20°C. Plants grown from cormels stored at different temperatures produced the same numbers of corms and cormels, if the plants were the same age and were spaced alike.
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