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http://dx.doi.org/10.14578/jkfs.2021.110.1.53

Optimizing In Vitro Propagation of Sophora koreensis Nakai using Statistical Analysis  

Jeong, Ukhan (Department of Forest Environment System, Kangwon National University)
Lee, Hwa (Department of Forest Environment System, Kangwon National University)
Park, Sanghee (Department of Forest Environment System, Kangwon National University)
Cheong, Eun Ju (Department of Forest Environment System, Kangwon National University)
Publication Information
Journal of Korean Society of Forest Science / v.110, no.1, 2021 , pp. 53-63 More about this Journal
Abstract
Sophora koreensis Nakai is an indigenous plant in Koreawith a restricted natural range, part of which is in Gangwon province. The species is known to contain phytochemicals that have beneficial effects on human health, and it is economically important in bioindustry. Because of the limited number of plants in a small range of habitats, the mass-propagation method should be developed for use and conservation. In vitro tissue culture is a reliable method in terms of mass propagation from selected clones of the species. We investigated the optimal conditions of the medium in this process, especially focusing on the concentrations of plant growth regulators(PGRs) in the culture of stem-containing axillary buds. Three statistical methods, i.e., ANOVA, response surface method(RSM), and fuzzy clustering were used to analyze the plant growth, number of shoots induced, and shoot length with various combinations of PGRs. Results from the RSM differed from those of the other two methods; thus, the method was not suitable. ANOVA and fuzzy clustering showed similar results. However, more accurate results were obtained using fuzzy clustering because it provided a probability for each treatment. On the basis of the fuzzy clustering analysis, stem tissue produced the greatest number of shoots(11.03 per explant; 63.33%) on a medium supplemented with 5-��M 6-benzylaminopurine and 2.5-��M thidiazuron(TDZ). Proliferation of shoots(2.18 ± 0.21 cm, 63.33%) was attained on a medium supplemented with 2.5-��M BA, 2.5-��M TDZ, and 2.5-��M gibberellic acid.
Keywords
Sophora koreensis nakai; In vitro propagation; fuzzy k-means clustering; response surface method;
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