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http://dx.doi.org/10.5352/JLS.2005.15.3.499

Effect of Growth Retardants on Growth and Invertase Activity of Sedirea japonica Seedlings in vitro  

Jee Sun Ok (Department of Biotechnology, Joongbu University)
Cho Dong Hoon (Department of Horticulture, Kyungpook National University)
Publication Information
Journal of Life Science / v.15, no.3, 2005 , pp. 499-504 More about this Journal
Abstract
This experiment was conducted to identify the effect of several plant growth retardants on growth of Sedirea japonica seedlings cultured in vitro and their changes of invertase activities. When seedlings of Sedirea japonica were treated with ancymidol and paclobutrazol, as the concentrations were increased, leaf length was gradually shortened and leaf width became wider than that of control. On the other hand, root length was shorter, but the number of root and the root's diameters were greatly increased, compared with control. In 0.05mg/L uniconazole, growth of leaf and root were enhanced, compared with the control and higher concentrations of uniconazole. As concentration of each growth retardants was increased, leaf shape became round and smaller. Both soluble acid invertase activity and soluble alkaline invertase activity in leaf were decreased in higher concentrations of each growth retardant, but those of the root were contrary to those of the leaf. To confirm the estimated invertase activities, starch content of leaf was higher in low concentration treatments in each growth retardant, but in the root was contrary to content that of the leaf.
Keywords
Growth retardant; Invertase activity; Sedirea japo nica;
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