Evaluation of different lighting sources on the growth and chemical composition of lettuce
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Sergejeva, D.
Alsina, I.
Duma, M.
Dubova, L.
Augspole, I.
Erdberga, I.
Berzina, K.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Experiment were carried out in Latvia University of Agriculture in plant growth room.
Lettuce
Lactuca sativa
L. var
foliosum
cv. ‘Dubacek’ and
L .
sativa
L. cv. ‘Michalina’ were grown
under 4 types of lights (luminescence lamps, commercial light emitting diodes (LED) lamps
(V
-
TAC premium series
–
for plant growing) and two different Lumigrow LED strips
-
dominant
wavelength
-
blue or red with 14 h ph
otoperiod and total photosynthetic active radiation (PAR)
100
μmol
m
-
2
s
-
1
in all variants. Plant weight, length, amount of leaves were measured. Content
of chlorophylls, carotenoids, phenols, flavonoids in lettuce was determined three times per
vegetation
period. In experiments were found that
higher lettuce yield was under commercial
LED (V
-
TAC premium series), but these plants contain less soluble sugars, pigments and
phenols. Better plant quality was obtained with luminescence lamps. These lettuces have
higher
sugar, phenols and flavonoids content. Lettuce growth under blue dominate LED (LEDb) was
delayed, but these plants contain higher chlorophylls content. The differences in plant growth,
response to light and biochemical content b
etween cultivars wer
e detected.
Kirjeldus
Article
Märksõnad
LED lamps, Lactuca sativa, pigments, phenols, flavonoids, articles