The contribution of different spectral sections to increase fresh weight of boston lettuce
Journal
HortScience
Journal Volume
50
Journal Issue
7
Pages
1006-1010
Date Issued
2015
Author(s)
Abstract
Six types of light sources [0G, 20G, 40G, cool-white light-emitting diode (LED CW), cool-white fluorescent lamp (FLCW), and plant light fluorescent lamp (TLRA)] were used as the sole light sources to cultivate boston lettuce (Lactuca sativa L. cv. Ostinata). The photosynthetically active radiation (PAR) range was separated into five sections and the contributions of each spectral section on fresh weight (FW) were quantified. The results indicate that the conventional method of separating PAR into red, green, and blue at 100 nm apart was not accurate enough to clarify the contribution of different spectral sections to FW of boston lettuce. Green light (525–575 nm) at less than 30% of PAR is even more important than red (625–700 nm) and blue (400–475 nm) to plant growth. Yellow light (575–625 nm) has very little effect on plant growth. ? 2015 by the American Society for Horticultural Science.
Subjects
Artificial light; Boston lettuce; Fresh weight; Growth model; Spectrum
Other Subjects
Lactuca; Lactuca sativa
Type
journal article