Effect of light intensity and light/dark period on iridoids in Hedyotis diffusa
Publication in refereed journal


摘要The purpose of this study was to clarify the effects of light intensity and light/dark period on the concentration of iridoids in the plant Hedyotis diffusa, which finds use in herbal medicine. To investigate the effect of light conditions, plants were grown in a chamber with factorial treatments comprising three light/dark periods (14/10 h, 19/5 h and 24/0 h) and two light intensities (photosynthetic photon flux density of 142 and 40μmol m-2 s-1). The epigeous dry weight was greatest with the treatments using high light intensity regardless of light period. The concentration of asperuloside (an iridoid) at 24/0 h was noticeably greater than that at 14/10 h or 19/5 h irrespective of light intensity. It was expected that the critical light period for the production of asperuloside would occur between 19 h and 24 h. The content of asperuloside was greatest at 24/0 h under high light intensity. Therefore, high light intensity and a 24/0-h light/dark period can produce high-quality H diffusa.
著者Higashiuchi K., Uno Y., Kuroki S., Hisano M., Mori T., Wong C.W., Leung P.C., Lau C.B.-S., Itoh H.
期刊名稱Environmental Control in Biology
詳細描述DOI: 10.2525/ecb.54.109.
出版社Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists (JASBEES)
頁次109 - 116
關鍵詞Asperuloside, Environmental control, Hedyotis diffusa, Iridoid glycoside, Lighting condition, Plant factory

上次更新時間 2020-16-10 於 01:21