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Type of publication: Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Vaštakaitė, Viktorija;Viršilė, Akvilė;Brazaitytė, Aušra;Samuolienė, Giedrė;Jankauskienė, Julė;Sirtautas, Ramūnas;Novičkovas, Algirdas;Dabašinskas, Laurynas;Sakalauskienė, Sandra;Miliauskienė, Jurga;Duchovskis, Pavelas
Title: The effect of blue light dosage on growth and antioxidant properties of Brassicaceae microgreens
Is part of: Nordic view to sustainable rural development :25th NJF congress, June 16-18, 2015 / Nordic Association of Agricultural Scientists (NJF): proceedings. Riga : NJF, 2015
Extent: p. 55
Date: 2015
Note: ISBN 978-9934-14-548-3 (printed); ISBN 978-9934-14-549-0 (PDF)
Keywords: Light-emitting diodes;blue light;microgreens;controlled environment;antioxidants
ISBN: 9789934145483
Abstract: Light-emitting diodes (LEDs) are an efficient light source for plant growth and development, and can be easily controlled in artificial growing environments. The impact of blue LED light intensity on plant growth parameters and antioxidant capacity of red pak choi (Brassica rapa var. chinensis ‘Rubi F1’), tatsoi (Brassica rapa var. rosularis) and mustard (Brassica juncea L. ‘Red Lion’) microgreens were investigated. Plants were cultivated within 16-h photoperiod, 21±2/ 17±2 ºC (day/night), 50-60 % relative humidity in growth chamber for 10 days after sowing. Total photosynthetic photon flux density (PPFD) was ~300 μmol m-2 s-1. Five dosages of blue (447 nm; 0, 25, 50, 75, 100 μmol m-2 s-1) in combination with red (638 nm; 665 nm) and far red (731 nm) LEDs were tested. Results showed that microgreens treated without blue light were significantly elongated than plants treated with ~50-75 μmol m-2 s-1 blue light dosages. The effect of blue light on antioxidant properties differed depending on microgreens species. The small addition (~25 μmol m-2 s-1) of blue light was more suitable for higher contents of total phenols in mustard and red pak choi microgreens, and ascorbic acid synthesis in tatsoi. The ~75 μmol m-2 s-1 blue light dosage resulted in significantly higher DPPH free radical – scavenging activity and total anthocyanins contents in red pak choi and tatsoi microgreens, respectively. The highest blue light dosage (~100 μmol m-2 s-1) led to significantly increased accumulation of total phenols in tatsoi. These results showed that supplemental blue light can be strategically used to enhance the nutritional value and inhibit elongation of microgreens. Targeted management of the blue light irradiance in combination with other LEDs may lead to maximized plant production and nutritional quality of young green vegetables grown in controlled environments
Affiliation(s): Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
Vilniaus universitetas
Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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