High ratio of red-to-blue LED light improves the quality of Lachenalia ‘Rupert’ inflorescence

Renata Wojciechowska , Ewa Hanus-Fajerska , Iwona Kamińska , Aleksandra Koźmińska , Olga Długosz-Grochowska , Anna Kapczyńska

Abstract

The southern African geophyte Lachenalia with an enormous number of species and cultivars is nowadays a commercially important plant material. There is a need for research on the optimization of growing conditions to obtain a satisfactory visual quality of potted plants, which may boost its production on the international ornamental market. Our research can be considered as an innovative study on supplemental irradiation with various light spectra in relation to flower quality of Lachenalia spp. The main objective was to examine the usefulness of LED lighting in extending the length of the natural day to a 16/8 h photoperiod in order to control the development of Lachenalia ‘Rupert’ inflorescence during greenhouse cultivation in Central-European winter time. Three light treatments were applied with red (660 nm) and blue (440 nm) light in different ratios: 100% red (100/0), 90% red mixed with 10% blue (90/10) and 80% red with 20% blue (80/20). The PPFD at the plant leaf level was approx. 150 μmol m-2 s−1. The most favourable spectrum, 90/10, induced the longest inflorescences characterized by the highest stem diameter with simultaneously the highest number of florets. Additionally, blue light increased the anthocyanin content in the corolla by about 35%, compared with plants exposed to 100% red light and non-irradiated ones (control plants). This first study on the wavelength ratios is aimed to increase the production quality of Lachenalia and indicates the need for continuation.
Author Renata Wojciechowska (FoBaH / IoPBaB)
Renata Wojciechowska,,
- Institute of Plant Biology and Biotechnology
, Ewa Hanus-Fajerska (FoBaH / IoPBaB)
Ewa Hanus-Fajerska,,
- Institute of Plant Biology and Biotechnology
, Iwona Kamińska (FoBaH / IoPBaB)
Iwona Kamińska,,
- Institute of Plant Biology and Biotechnology
, Aleksandra Koźmińska (FoBaH / IoPBaB)
Aleksandra Koźmińska,,
- Institute of Plant Biology and Biotechnology
, Olga Długosz-Grochowska (FoBaH / IoPBaB)
Olga Długosz-Grochowska,,
- Institute of Plant Biology and Biotechnology
, Anna Kapczyńska (FoBaH / DoDP)
Anna Kapczyńska,,
- Department of Decorative Plants
Journal seriesFolia Horticulturae, ISSN 0867-1761, e-ISSN 2083-5965, (N/A 20 pkt)
Issue year2019
Vol31
No1
Pages83-90
Publication size in sheets0.5
Keywords in Englishanthocyanins; dry matter; florets; growth of inflorescence
ASJC Classification1108 Horticulture
DOIDOI:10.2478/fhort-2019-0006
URL https://content.sciendo.com/view/journals/fhort/ahead-of-print/article-10.2478-fhort-2019-0006.xml
Internal identifierWBIO/2019/26
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); after publication
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[20835965 - Folia Horticulturae] High ratio of red-to-blue LED light improves the quality of Lachenalia ‘Rupert’ inflorescence.pdf of 17-04-2019
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Score (nominal)20
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.644; WoS Impact Factor: 2018 = 0.532 (2)
Citation count*
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FinansowanieDS 3504/2017
Udział procentowyWojciechowska Renata (35%); Hanus-Fajerska Ewa (15%); Kamińska Iwona (20%); Kapczyńska Anna (10%); Koźmińska Aleksandra (10%); Długosz-Grochowska Olga (10%)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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