Different LED Light Intensities and 6-Benzyladenine Concentrations in Relation to Shoot Development, Leaf Architecture, and Photosynthetic Pigments of Gerbera jamesonii Bolus In Vitro

Monika Cioć , Andrzej Kalisz , Marek Żupnik , Bożena Pawłowska

Abstract

A mixture of red and blue light-emitting diodes (LEDs; at a ratio of 7:3, respectively) were used to analyze the effects of different photosynthetic photon flux densities (PPFDs) (40, 80, and 120 µmol m−2 s−1 hereafter known as LED 40, 80, and 120, respectively) on the micropropagation of Gerbera jamesonii Bolus shoots. The experiment also examined the effect of 6-benzyladenine (BA) in 1, 2.5, and 5 µM concentrations in the media. Biometrical observations and analyses of leaf morphometry and photosynthetic pigment content were conducted. Shoot multiplication increased with an increasing BA concentration. A PPFD of 80 µmol m−2 s−1 and 5 µM BA is suggested as efficient for shoot propagation and economically viable. LED 120 increased the leaf blade area and its width, and circularity and elongation ratios. The intensity of light did not affect the fresh weight, which increased at higher BA concentrations (2.5 and 5 μM). The dry weight content decreased with increasing cytokinin concentration; the greatest content was observed on media with 1 µM BA under PPFD 120 µmol m−2 s−1. LED 80 increased the photosynthetic pigments content in the leaves in comparison to the standard intensity of LED 40. Increased BA concentration raises the content of chlorophyll a.
Author Monika Cioć (FoBaH / Department of Ornamental Plants and Garden Art)
Monika Cioć,,
- Department of Ornamental Plants and Garden Art
, Andrzej Kalisz (FoBaH / Department of Horticulture)
Andrzej Kalisz,,
- Department of Horticulture
, Marek Żupnik
Marek Żupnik,,
-
, Bożena Pawłowska (FoBaH / Department of Ornamental Plants and Garden Art)
Bożena Pawłowska,,
- Department of Ornamental Plants and Garden Art
Journal seriesAgronomy, [Agronomy], ISSN 2073-4395, e-ISSN 2073-4395, (N/A 100 pkt)
Issue year2019
Vol9
No7
Pages1-16
Publication size in sheets17.9
Article number358
Keywords in Englishlight intensity; light-emitting diodes; tissue cultures; photomorphogenesis; cytokinin; leaf morphometry; predictive regression model; red light; blue light; organogenesis
ASJC Classification1102 Agronomy and Crop Science
DOIDOI:10.3390/agronomy9070358
URL https://www.mdpi.com/2073-4395/9/7/358/htm
Languagepl polski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
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Different LED Light Intensities and 6-Benzyladenine Concentrations in Relation to Shoot Development, Leaf Architecture, and Photosynthetic Pigments of Gerbera jamesonii Bolus In Vitro of 26-09-2019
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Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.272; WoS Impact Factor: 2018 = 2.259 (2)
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FinansowanieThis work was supported by the Polish Ministry of Science and Higher Education.
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