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首页> 外文期刊>Acta Horticulturae >Effects of known and unknown molecular mass chitosan products on plantlet development of Dendrobiumand Cattleya hybrids
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Effects of known and unknown molecular mass chitosan products on plantlet development of Dendrobiumand Cattleya hybrids

机译：已知且未知分子壳聚糖产物对Dendrobiumand Cattleya杂交种植植物发育的影响

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摘要

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 knownchitosan 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 L1) 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 L1 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 molecularmass 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.
机译：尽管壳聚糖用作泰国的植物生长和发育刺激剂，但大多数商业壳聚糖产品的分子特性尚不清楚，这可能影响植物的发育。这项工作旨在评估众所周知的熟素寡聚体（分子量为45,000道尔顿）和未知的分子大规模商业壳聚糖产物在体外条件下对石斛和卡麦杂交种的植物生长的影响。兰花杂交种的90天血液变量在补充有每种壳聚糖产物的不同浓度（0,10,20,40和80mg L1）的W3琼脂培养基上生长90天。与对照的对照相比，观察到两种产品对兰花杂交种的枝条和根长度的积极影响。在20mg L1的已知分子量壳聚糖对杂交种的芽长度（P <0.05）表示显着的阳性作用，而未知的分子质量壳聚糖产物需要更高的浓度。另外，与未知的分子大众产物的相比，所有浓度的已知分子壳聚糖倾向于对生长具有优异的效果。这些结果表明，两种商业壳聚糖产物都能够用作兰花生长刺激器，但应考虑不同分子量产物对小植物发育的影响。

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