Biochemical, photosynthetic and productive parameters of Chinese cabbage grown under blue–red LED assembly designed for space agriculture

Interaction of light quality and fertility on biomass, shoot pigmentation and xanthophyll cycle flux in Chinese kale

“…27 -33 In a recent study, shoot FM (g per plant) in 28-day-old Chinese cabbage (Brassica chinensis) was significantly higher under high pressure sodium (HPS) lighting compared to a 7: 1 ratio of red (650 nm) and blue (470 nm) LED light at an equal intensity of 391 ± 24 μmol m −2 s −1 . 27 These results compliment the findings in the present study showing a significantly lower shoot tissue FM in Chinese kale under LED lighting treatments compared to an incandescent/fluorescent lighting treatment ( Table 1). A red leaf lettuce (Lactuca sativa var.…”

“…A previous study also showed significant chlorophyll increases in sprouting broccoli microgreens grown under LED lighting treatments of red and blue light compared to fluorescent/incandescent light at the same light intensity . Total chlorophyll content (mg dm −2 ) in 28‐day‐old Chinese cabbage was significantly higher under a 7: 1 ratio of red (650 nm) and blue (470 nm) LED light treatment compared to HPS lighting . The fluorescent/incandescent light treatment in the present study provided broad spectrum wavelengths; however, all blue light wavelengths accounted for 15.3% of the total irradiance.…”

“…Current research demonstrates that light quality can impact plant growth and biomass accumulation of specialty crops in controlled environments . In a recent study, shoot FM (g per plant) in 28‐day‐old Chinese cabbage ( Brassica chinensis ) was significantly higher under high pressure sodium (HPS) lighting compared to a 7: 1 ratio of red (650 nm) and blue (470 nm) LED light at an equal intensity of 391 ± 24 µmol m −2 s −1 .…”

Agriculture for Space: People and Places Paving the Way

“…1990, and was followed by years of testing by Kennedy Space Center and other NASA funded groups (Tennessen et al, 1994;Tripathy and Brown, 1995;Goins et al, 1997Goins et al, , 2001Schuerger et al, 1997;Kim et al, 2004Kim et al, , 2007. In the past 10 years, there has been a virtual explosion in the use of LED lighting in controlled environment agriculture, and this stands as an example of how research for space has benefitted terrestrial agriculture (Morrow, 2008;Massa et al, 2008;Avercheva et al, 2014;Mitchell et al, 2015).…”

“…Spiral shaped systems such as Phytocycle and Phytoconveyor could accommodate small seedlings at one end and then have larger plants ready for harvest at the other end. As part of this testing, light emitting diode (LED) lighting systems were also incorporated due to their flexibility for different spatial arrangements (Berkovich et al, 2004(Berkovich et al, , 2009Avercheva et al, 2014), and I will expand on LED research later.…”