간척지 토양에서 EC 처리에 따른 향부자와 갯방풍의 생육 및 기능성 물질 함량 분석

The purpose of this study was to analyze the growth and functional differences between C. rotundus and G. littoralis according to different electrical conductivity (EC) conditions in reclaimed soil conditions. C. rotundus and G. littoralis seeds were sown in a tray and managed for seedlings stage for eight weeks. They were transplanted in the pots containing reclaimed soils sampled in the Saemangum region. The plants were grown in the reclaimed land soil for 12 weeks under the control, 1, 2, 4, and 8 dS·m-1 conditions and in horticultural soils with EC 1.0 dS·m-1. Plant height, leaf length and width of C. rotundus were the highest in EC 1 dS·m-1. Leaf, flower and tuber numbers of C. rotundus were the highest in EC 2 dS·m-1 and the lowest in EC 8 dS·m-1, and SPAD was the highest in EC 2 and 4 dS·m-1 and the lowest in EC 8 dS·m-1. The fresh weights of shoot and root of C. rotundus grown under EC 2 dS·m-1 increased and then decreased as the concentration increased. When compared plant growth between reclaimed soil and horticulture soil with EC 1 dS·m-1, the fresh weights of shoot and root, SPAD, leaf number, flower number, and tuber number were higher in horticultural soils. Although G. littoralis grown under EC 8 dS·m-1 was the lowest in all growth parameters, there were no significant differences among other EC treatments. C. rotundus had the highest pcoumaric acid content in EC 1 dS·m-1. And the catechin content in shoot of G. littoralis was the highest in the control, and root of Glehnia littoralis had the highest benzoic acid contents in EC 1 dS·m-1. If the soil EC is well managed within 4.0 dS·m-1, two plants would be cultivated in reclaimed land.