The objective of this study was to select the right species among Agastache in the family Lamiaceae as the result of growth analysis and functional substance analysis.Among 22 species of Agastache, five species (Agastache cana, Agastache foeniculum, Agastache rugosa 'Spike Blue', Agastache rugosa 'Spike Snow', Agastache rupestris) were selected by referring to United States Department of Agriculture (USDA)'s plant hardiness zone area and Korea's one based on USDAs.These plants were cultured at 24 ± 1°C and 18 ± 1°C (day and night temperatures, respectively) and 65 ~ 75% relative humidity in a hydroponic culture system for 4 weeks.In terms of growth analysis experiment, stem length, root length, leaf width, leaf area, leaf number, SPAD value, and fresh and dry weights of shoots and roots were measured.The results showed that A. rugosa SS and A. rugosa SB have a higher overall balance value than other species.When compared functional substance value (rosmarinic acid, tilianin, and acacetin) of five species, A. rugosa SS and A. rugosa SB are significantly higher than other species in Agastache.It seems to be directly proportional to the growth analysis results.When considering the growth and functional substance part comprehensively, A. rugosa SS and A. rugosa SB are the most optimal high-value species among Agastache.
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Won et al. (2020) studied this question.
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