Articles
Effects of known and unknown molecular mass chitosan products on plantlet development of Dendrobium and Cattleya hybrids
Article number
1262_23
Pages
173 – 178
Language
English
Abstract
Although chitosan is used as a plant growth and development stimulator in Thailand, the molecular properties of most commercial chitosan products are unclear, which may affect the development of plants.
This work aimed to evaluate the effect of known chitosan oligomers (with molecular mass of 45,000 daltons) and unknown molecular mass commercial chitosan products on plantlet growth of Dendrobium and Cattleya hybrids under in vitro conditions.
The 90 day-old protocorms of both orchid hybrids were grown on W3 agar medium supplemented with different concentrations (0, 10, 20, 40 and 80 mg L‑1) of each chitosan product for 90 days.
The positive effects of both products on shoot and root length of orchid hybrids were observed when compared with that of the control.
The known molecular mass chitosan at 20 mg L‑1 showed significant positive effects on shoot length (p<0.05) of both hybrids whereas higher concentrations were required for unknown molecular mass chitosan product.
Additionally, the known molecular mass chitosan at all concentrations tended to have a superior effect on the growth compared to that of the unknown molecular mass product.
These results indicate that both commercial chitosan products were able to be used as an orchid growth stimulator but the influence of different molecular mass products on plantlet development should be considered.
This work aimed to evaluate the effect of known chitosan oligomers (with molecular mass of 45,000 daltons) and unknown molecular mass commercial chitosan products on plantlet growth of Dendrobium and Cattleya hybrids under in vitro conditions.
The 90 day-old protocorms of both orchid hybrids were grown on W3 agar medium supplemented with different concentrations (0, 10, 20, 40 and 80 mg L‑1) of each chitosan product for 90 days.
The positive effects of both products on shoot and root length of orchid hybrids were observed when compared with that of the control.
The known molecular mass chitosan at 20 mg L‑1 showed significant positive effects on shoot length (p<0.05) of both hybrids whereas higher concentrations were required for unknown molecular mass chitosan product.
Additionally, the known molecular mass chitosan at all concentrations tended to have a superior effect on the growth compared to that of the unknown molecular mass product.
These results indicate that both commercial chitosan products were able to be used as an orchid growth stimulator but the influence of different molecular mass products on plantlet development should be considered.
Publication
Authors
W. Pranprai, J. Sapmak, A. Sin-ngam, K. Obsuwan, B. Ngampanya
Keywords
commercial chitosan products, W3 medium, orchid, growth and development stimulator, protocorm
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