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 438589
Title Meristem temperature substantially deviates from air temperature, even in moderate environments: Is the magnitude of this deviation species-specific?
Author(s) Savvides, A.; Ieperen, W. van; Dieleman, J.A.; Marcelis, L.F.M.
Source Plant, Cell & Environment 36 (2013)1. - ISSN 0140-7791 - p. 1950 - 1960.
DOI https://doi.org/10.1111/pce.12101
Department(s) Horticultural Supply Chains
WUR GTB Gewasfysiologie Management en Model
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) shoot-tip temperature - climate-change - leaf development - effective thickness - light interception - boundary-layers - heat-transfer - crop yields - maize apex - plant
Abstract Meristem temperature (Tmeristem) drives plant development but is hardly ever quantified. Instead, air temperature (Tair) is usually used as its approximation. Meristems are enclosed within apical buds. Bud structure and function may differ across species. Therefore, Tmeristem may deviate from Tair in a species-specific way. Environmental variables (air temperature, vapour pressure deficit, radiation, and wind speed) were systematically varied to quantify the response of Tmeristem. This response was related to observations of bud structure and transpiration. Tomato and cucumber plants were used as model plants as they are morphologically distinct and usually growing in similar environments. Tmeristem substantially deviated from Tair in a species-specific manner under moderate environments. This deviation ranged between -2.6 and 3.8¿°C in tomato and between -4.1 and 3.0¿°C in cucumber. The lower Tmeristem observed in cucumber was linked with the higher transpiration of the bud foliage sheltering the meristem when compared with tomato plants. We here indicate that for properly linking growth and development of plants to temperature in future applications, for instance in climate change scenarios studies, Tmeristem should be used instead of Tair, as a species-specific trait highly reliant on various environmental factors
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