Accumulation of Mineral Nutrients and Phytochemicals in Lettuce and Tomato Grown in High Tunnel and Open Field
Autor: | Jingwen Xu, Myungjin Lee, C. B. Rajashekar, Samuel Sumpter, Shannon Barry, Weiqun Wang, Amanda Woolley |
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Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
biology fungi food and beverages Lactuca 04 agricultural and veterinary sciences General Medicine biology.organism_classification Micronutrient 01 natural sciences chemistry.chemical_compound Horticulture Nutrient Chlorogenic acid chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Nutrition physiology Gallic acid Solanum Plant nutrition 010606 plant biology & botany |
Zdroj: | American Journal of Plant Sciences. 10:125-138 |
ISSN: | 2158-2750 2158-2742 |
Popis: | High tunnel production of horticultural food crops is becoming increasingly popular and has a significant impact on their growth, productivity and nutritional quality. The present study examines the effect of high tunnel production of lettuce (Lactuca sativa cv. “Two Star” and “New Red Fire”) and tomato (Solanum lycopersicum cv. “Celebrity” and “Mountain Fresh”) on their nutritional quality relating to major nutrients and health-promoting phytochemicals. High tunnel environment increased the concentration of N (protein) in both lettuce and tomato relative to the open field cultivation. The accumulation pattern of mineral nutrients in high tunnel was similar in green-leaf and red-leaf lettuce varieties. Lettuce varieties grown in high tunnel had higher accumulation of C, S and Zn relative to those grown in open field. However, high tunnel environment suppressed the accumulation of many micronutrients such as Mg, Fe, Cu and Mn in both lettuce varieties but not in tomato. For example, accumulation of Fe was reduced by more than 80% in “Two Star” and by more than 55% in “New Red Fire” under high tunnel. It also suppressed the levels of many health-promoting phenolic compounds such as chlorogenic acid, chicoric acid, rutin and kaempferol in green-leaf lettuce and gallic acid in red-leaf lettuce. High tunnel environment improved the soil nutrient status but reduced the radiation levels (PAR, UV-A and UV-B) received by the crops. The results show that the high tunnel production has a significant impact on the nutritional quality relating to protein and mineral nutrients in both crops and health-promoting phytochemicals in lettuce. |
Databáze: | OpenAIRE |
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