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 509754
Title Pampered inside, pestered outside? Differences and similarities between plants growing in controlled conditions and in the field
Author(s) Poorter, Hendrik; Fiorani, Fabio; Pieruschka, Roland; Wojciechowski, Tobias; Putten, Wim H. van der; Kleyer, Michael; Schurr, Uli; Postma, Johannes
Source New Phytologist 212 (2016)4. - ISSN 0028-646X - p. 838 - 855.
DOI http://dx.doi.org/10.1111/nph.14243
Department(s) Laboratory of Nematology
PE&RC
EPS
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) daily light integral (DLI) - glasshouse - growth chamber - photothermal ratio - plant density - plant growth
Abstract

(Table presented.). Summary: Plant biologists often grow plants in growth chambers or glasshouses with the ultimate aim to understand or improve plant performance in the field. What is often overlooked is how results from controlled conditions translate back to field situations. A meta-analysis showed that lab-grown plants had faster growth rates, higher nitrogen concentrations and different morphology. They remained smaller, however, because the lab plants had grown for a much shorter time. We compared glasshouse and growth chamber conditions with those in the field and found that the ratio between the daily amount of light and daily temperature (photothermal ratio) was consistently lower under controlled conditions. This may strongly affect a plant's source : sink ratio and hence its overall morphology and physiology. Plants in the field also grow at higher plant densities. A second meta-analysis showed that a doubling in density leads on average to 34% smaller plants with strong negative effects on tiller or side-shoot formation but little effect on plant height. We found the r2 between lab and field phenotypic data to be rather modest (0.26). Based on these insights, we discuss various alternatives to facilitate the translation from lab results to the field, including several options to apply growth regimes closer to field conditions.

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