Influence of source variation and IBA treatment on Cinnamomum zeylanicum cutting propagation

Abstract

Cinnamomum zeylanicum is one of commercially important tree spice having high market demand for its bark and value-added products. Raising a quality planting material for large scale production is one of the important areas to be focused. Cinnamon can be propagated through seeds; but vegetative propagation plays major role to overcome problems associated with seed propagation and produce elite planting material of true to type. The plant growth regulators helps in inducing rooting during vegetative propagation. Success of vegetative propagation is affected by cluster of factors (genotype of species, seasonal variation and growth regulator treatment). The present study was carried out to assess the influence of source variation and different concentrations of IBA treatment on Cinnamomum zeylanicum cutting propagation during August- September season. Cuttings were collected from five different sources and treated with 1000 ppm and 2000 ppm IBA. Among the selected sources overall performance of Gejjehalli source was found better (sprouting: 62.66%, rooting: 46.67%, mean number of sprouts: 0.918, mean number of roots: 0.892, sprout length: 2.494 cm and root length: 1.50 cm) followed by Siddapura source with 2000 ppm IBA treatment during August-September season. IBA is least affected by auxin destroying enzymes and characterized by slow translocation. Good results were observed with increase in concentration. From the above studies it is evident that, source or provenances have exhibited significant variation for vegetative propagation which may be due to family and within-family effects, genetic interactions with different concentrations of IBA treatment.