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Young-Eun Yoon(윤영은),Hyeon Ji Choe(최현지),Kantharaj Vimalraj(칸타라즈 비말라즈),Chohra Hadjer(쇼흐라 하젤),Mi Sun Cheong(정미선),Young-Nam Kim(김영남),Yong Bok Lee(이용복) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11
As a flavone glucoside, Saponarin is the primary functional compound found in barley sprouts (Hordeum vulgare L.). It appears that saponarin production occurs mainly in the primary barley leaf and varies considerably with environmental factors, i.e. climatic conditions. To obtain high yield of saponarin, it is essential to find the optimal environmental conditions for growing barley sprouts. In the present study, we conducted field experiments to investigate the effects of variation in climatic conditions with different sowing times on the saponarin content of barley sprouts. As a result, there was no effect of a difference in sowing time on the fresh weight (FW) of the sprouts, but their growth period (GP) indeed varied with the sowing time. In both sites, the higher saponarin concentration was found in the sprouts sown in spring (March to May) and autumn (September to October) than in summer (May to August). Also, according to the correlation analysis, saponarin concentration had positive correlations with daily temperature range (DTR) and average light period (ALP), negative correlations with FW, leaf length, growth index (GI), average daily temperature (ADT), accumulated temperature (ACT), relative humidity (RH), and rainfall. The results indicate that the daily temperature difference and daylight hours may be determinant factors on saponarin biosynthesis. In addition, the polynomial relationship between saponarin yield and leaf length showed that barley sprouts would produce the highest saponarin yield at an appropriate 16 cm length. The outcomes of this study suggest the optimum sowing seasons that have more significant climatic factors such as daily temperature difference and daylight hours, contributing to a high quality of barley sprouts with high saponarin content.