Effects of nutrient solution electrical conductivity and sulfur, magnesium, and phosphorus concentration on sesquiterpene lactones in hydroponically grown lettuce (Lactuca sativa L.)
- Authors
- Seo, Myeong Whoon; Yang, Dong Sik; Kays, Stanley J.; Kim, Jun-Hong; Woo, Jin Ho; Park, Kuen Woo
- Issue Date
- 1-10월-2009
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Bitterness; EC; Lactucin; Lactucopicrin; 8-Deoxylactucin; Macronutrient
- Citation
- SCIENTIA HORTICULTURAE, v.122, no.3, pp.369 - 374
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENTIA HORTICULTURAE
- Volume
- 122
- Number
- 3
- Start Page
- 369
- End Page
- 374
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/119134
- DOI
- 10.1016/j.scienta.2009.06.013
- ISSN
- 0304-4238
- Abstract
- The effect of nutrient solution electrical conductivity (EC) and sulfur (S), magnesium (Mg), and phosphorus (P) levels on the content of the primary sesquiterpene lactones (SLs), lactucin, 8-deoxylactucin, and lactucopicrin, in hydroponically grown lettuce was assessed. Lettuce grown at 4 EC levels (0.5, 1.0, 2.0, and 3.0 dS m(-1)) displayed significant differences in leaf area index, number of leaves, plant height, fresh weight per plant, and chlorophyll content that were highest at EC 2.0 dS m-1. Lactucin (5.5 mu g g(-1) dry weight), 8-deoxylactucin (7.5), lactucopicrin (35.8), and total SLs (48.7) concentraions were highest at EC 0.5 dS m(-1). Four 5 (8, 16, 48, and 80 mg L-1) and Mg (6, 12, 36, and 60 mg L-1) levels and 3 P (8, 16, and 48 mg L-1) levels were assessed for their effect on individual and total SLs. S and P had the greatest effect on SL levels. Plants in the lowest S level had significantly higher lactucin. lactucopicrin and total SLs. Each of the SLs was higher in the highest P level while Mg influenced only the lactucopicrin level in a quadratic manner. The results indicate that solution culture conditions can strongly influence the SL concentration and therefore bitterness and acceptability of lettuce. (C) 2009 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Life Sciences and Biotechnology > Division of Biotechnology > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.