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dc.contributor.authorMølmann, Jørgen A
dc.contributor.authorHansen, Espen Holst
dc.contributor.authorJohansen, Tor Jacob
dc.date.accessioned2022-01-25T09:43:43Z
dc.date.available2022-01-25T09:43:43Z
dc.date.issued2020-10-04
dc.description.abstractBackground - Low growth temperatures and the special light qualities of midnight sun in northern Scandinavia, have both been shown to improve eating quality of swede root bulbs. To study the combined effect of these factors on root development and sensory-related compounds, plants were grown in phytotron under different 24 h supplemental light-emitting diode (LED) light colours, at constant 15 °C, or reduced end-of-season temperature at 9 °C. <p> <p>Results - Far-red LED (740 nm) light induced longer leaves and produced more roundly shaped bulbs, than the other light quality treatments. At constant 15 °C, supplemental light of far-red LED also produced a stronger purple crown skin colour than the other LED treatments. This difference between light quality treatments disappeared at 9 °C, as all bulb crowns developed a purple colour. There were no significant effects of LED-supplements on sugar concentrations, while the reduced temperature on average did increase concentrations of d-fructose and d-glucose. Total glucosinolate concentrations were not different among treatments, although the most abundant glucosinolate, progoitrin, on average was present in highest concentration under LEDs containing far-red light, and in lower concentration at 9 °C compared to 15 °C. <p> <p>Conclusion - The light quality of 24 h photoperiods in combination with temperature appears primarily important for growth and morphological traits in swede root bulbs. Influence of light quality and low temperature on appearance and sensory-related compounds may be utilized in marketing of root vegetables with special quality related to growth conditions of high latitude origin.en_US
dc.descriptionThis is the peer reviewed version of the following article: Mølmann, Hansen, Johansen. Effects of supplemental LED light quality and reduced growth temperature on swede (Brassica napus L. ssp. rapifera Metzg.) root vegetable development and contents of glucosinolates and sugars . Journal of the Science of Food and Agriculture. 2020, which has been published in final form at <a href=https://doi.org/10.1002/jsfa.10866>https://doi.org/10.1002/jsfa.10866</a>. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.en_US
dc.identifier.citationMølmann, Hansen, Johansen. Effects of supplemental LED light quality and reduced growth temperature on swede (Brassica napus L. ssp. rapifera Metzg.) root vegetable development and contents of glucosinolates and sugars . Journal of the Science of Food and Agriculture. 2020en_US
dc.identifier.doi10.1002/jsfa.10866
dc.identifier.issn0022-5142
dc.identifier.issn1097-0010
dc.identifier.urihttps://hdl.handle.net/10037/23793
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalJournal of the Science of Food and Agriculture
dc.relation.projectIDNorges forskningsråd: 195306en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NORDSATS/195306/Norway/Service Innovation and Tourist Experiences in the High North: The Co-creation of Value for Consumers, Firms and the Tourism industry//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holder© 2020 The Authorsen_US
dc.titleEffects of supplemental LED light quality and reduced growth temperature on swede (Brassica napus L. ssp. rapifera Metzg.) root vegetable development and contents of glucosinolates and sugarsen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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