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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Bagdonavičienė, Aistė;Jankauskienė, Julė;Januškaitienė, Irena;Deksnytė, Skirmantė;Duchovskis, Pavelas;Brazaitytė, Aušra
Title: The impact of supplemental blue and green LED and HPS lamps lighting effects on the photosynthesis parameters of sweet pepper transplants
Is part of: The vital nature sign [elektroninis išteklius] : 9th international scientific conference : abstract book. Kaunas : Vytautas Magnus university, 2015, [no. 9]
Extent: p. 61-61
Date: 2015
Keywords: Photosynthetic rate;Intercellular CO2;Stomatal conductance;Pigments;Transpiration rate
Abstract: The objective of studies was to compare photosynthesis parameters of sweet pepper transplants ‘Reda’ under emission of short-wavelength single-monochromatic solid-state lamps developed for supplementation of high-pressure sodium (HPS) lamps used winter time in greenhouses. Four types of solid-state lamps were made using advanced light-emitting diodes (LEDs) with peak emissions at blue 455, 470, cyan 505, and green 530 nm, and were installed in a greenhouse. The generated photosynthetic photon flux density (PPFD) of each type of solid-state lamps was 15 μmol m-2 s-1 and of HPS lamps PPFD was 100 μmol m-2 s-1. Transplants were grown in greenhouse of phytotron complex under illumination of HPS lamps and with supplementation LED lamps. The reference transplants were grown under illumination of HPS lamps (PPFD 110 μmol m-2 s-1). Our investigations revealed that the effect of supplemental green 530 nm LED illumination with HPS lamps increased photosynthetic pigments content. Meanwhile, supplemental 530 nm light had negative effect on photosynthetic rates (Pn), intercellular CO2 concentration (Ci), transpiration rate (Tn) and stomatal conductance (gs). Supplemental cyan 505 nm and blue 470 nm LED light had great positive effect on the photosynthesis parameters of sweet pepper transplants
Affiliation(s): Aplinkotyros katedra
Gamtos mokslų fakultetas
Lietuvos agrarinių ir miškų mokslų centro Sodininkystės ir daržininkystės institutas
Lietuvos sodininkystės ir daržininkystės institutas
Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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