Abstract:
Anthurium andreanum is one of the major plant species which was in commercial
floriculture sector in Sri Lanka mainly used as cut flowers and foliage plants.
Anthurium is usually propagated vegetatively through stem cuttings and suckers.
Planting materials produced by these conventional methods are poor in quality and not
enough to fulfill the market demand. Tissue culture propagation methods can be used to
produce large amount of planting materials and to create novel genotypes to overcome
the above challenges. Hence a study was carried out to induce variations and improve
morphological characteristics of Anthurium andreanum var. Angle.
The present study was carried out to find out the effects of different colchicine levels on
morphological characteristics of Var. Angle. Half strength Murashige and Skoog (MS)
medium supplemented with 0.1 mg/1 2, 4-D and 1.0 mg/1 BAP were used for the
experiment. MS medium was prepared without supplying of CaCl2.2H20 / MgS04.
7H20. After two months, equal weight of callus (340 mg) were introduced to new
medium containing different colchicine levels (0, 1 mg/1, 0.3 mg/1, 0.5 mg/1, 0.7 mg/1
and 1.0 mg/1). Control treatment was prepared without colchicines.
Results revealed that, there was a significant effect of treatments on callus weight,
number of shoots per ex-plant and number of leaves per shoot. The control treatment
and 0.1 mg/ L colchicine level were produced similar phenotypic characters with
highest number of shoots per ex-plant (3.1) and highest number of leaves per shoot (3).
Whitish stem and dead leaves were observed in 0.5 mg/1, 0.7 mg/1 and 1.0 mg/1
colchicine levels containing medium. Further studies would be necessary to find out
induced variations by observing foliage and flower characteristics of Anthurium
andreanum Var. Angle.
