Back to Search Start Over

Blackout Reduces Height of Easter Lily but End-of-day Red Light Treatment Using Light-emitting Diodes Does Not

Blackout Reduces Height of Easter Lily but End-of-day Red Light Treatment Using Light-emitting Diodes Does Not

Authors :
David Llewellyn
Youbin Zheng
Jasmine Jenji Mah
Source :
HortTechnology, Vol 30, Iss 2, Pp 156-162 (2020)
Publication Year :
2020
Publisher :
American Society for Horticultural Science, 2020.

Abstract

One principle for reducing undesirable stem extension in greenhouse production is to counteract the decrease in red-to-far red ratio that occurs naturally during twilight periods. This study evaluated three lighting treatments on the morphology of easter lily (Lilium longiflorum): 1) a 1-hour end-of-day treatment providing 20 μmol·m−2·s−1 of monochromatic red light (EOD R), 2) blackout curtains closed 45 to 75 minutes before sunset and kept closed until 0 to 60 minutes after sunrise (BO), and 3) a control with natural twilight (CTRL). Plants under the BO treatment were 11% shorter than CTRL, while plants exposed to EOD R did not differ in height compared with BO or CTRL. There were no treatment effects on any other measured parameters, including aspects of flowering.

Details

ISSN :
19437714 and 10630198
Volume :
30
Database :
OpenAIRE
Journal :
HortTechnology
Accession number :
edsair.doi.dedup.....8d9d71f4ffba62d0b4caea8a338ccca9
Full Text :
https://doi.org/10.21273/horttech04496-19