Abstract:
Light induce various plant responses, including morphogenesis in which they were
greatly affected by the light quality. The aim of study is to determine the effect of
different light colors on the growth of tissue culture-derived plantlets of Cryptocoryne
elliptica. The plantlets were grown with 24 hour daylight under fluorescent lamps with
different light colors; white, blue, red and green. The effects of these light colors were
evaluated based on the plant growth which measured by the petiole and leaves elongation
and also leaves width, including the chlorophyll content of the leaves, the addition of new
leaves and also new shoot tips. The growth of the plantlets grown for ten weeks under
blue light color treatment rose rapidly compared with other light color treatment.
Nevertheless, the white, red and green light colors give out different effects towards the
growth of the plantlets. The values of the chlorophyll content after ten weeks of
cultivation was higher in the white light color treatment, but reduced in blue, green and
red light color treatment from the initial chlorophyll content. This outcome demonstrates
that different light sources during growth affects the pattern of the plant growth as well as
the chlorophyll contents in the leaves.
