Abstract:
Cyptocoryne elliptica is an aquatic plant which is utilised widely in aquarium industry as
an ornamental plant. Due to its over-exploitation, deteriorated further by its low rate of
propagation, it has become endangered. A way to increase its rate of propagation is
through in vitro proliferation. Effect of cytokinin was investigated using different
hormone (zeatin, benzylaminopurine, thidiazuron) with different concentration (0.2, 0.4,
0.8 mg/L) using different type of explants (basal petiole, four 2-mm consecutive parts
from the apical dome of shoot apical meristem). Study showed that there was no
significant difference in number of shoot formed between all treatments. However, basal
petiole, section 3 and 4 of shoot apical meristem showed higher shoot regeneration rate.
Morphology of shoot formed differed in colour and leaf generation rate between zeatin,
benzylaminopurine and thidiazuron. Callus was also formed in only basal petiole explants
in benzylaminopurine and thidiazuron. Morphology of callus also differed in colour and
texture between benzylaminopurine and thidiazuron.