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 109108
Title DOCIS :a Model to Simulate Carbohydrate Balance and Development of Inflorescence during Vase Life
Author(s) Meeteren, U. van; Peppel, A. van de; Gelder, H. van
Source Acta Horticulturae 543 (2001). - ISSN 0567-7572 - p. 359 - 365.
Department(s) Horticultural Supply Chains
Publication type Refereed Article in a scientific journal
Publication year 2001
Abstract The concept of a dynamic and deterministic model (DOCIS) was developed to simulate post harvest development of an inflorescence during vase life based on carbohydrate content at harvest. The model was partly parameterized using lily ‘Enchantment’. The inflorescence as a system was defined by the state variables: the carbohydrate pool, structural biomass and development stage of each floret in the inflorescence and the carbohydrate pool in the stem. An additional auxiliary state variable was used to describe whether a floret is alive or dead due to shortage of carbohydrate supply. The model is temperature driven. It is assumed that the available carbohydrates are distributed among the floret(bud)s proportional to their total sink strengths. An osmotic pool of the petal cells is included which is treated as an independent sink. By priority, carbohydrates imported by a floret are used for maintenance respiration. Distribution of available carbohydrates among the osmotic and the non-osmotic (substrate available for structural biomass production) pool was assumed to be proportional to the sink strengths of both pools. Sink strength was defined as the capacity to accumulate carbohydrates under conditions of non-limiting carbohydrate supply. Available carbohydrates did not influence osmotic potential of petal juice (vacuolar solution) at a certain development stage. The resulting concept of constant osmotic potential makes it possible to predict floret fresh weight (size), an important aspect of decorative value.
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