Impact of nitrogen source and supply level on growth, yield and nutritional value of two contrasting ecotypes ofCichorium spinosumL. grown hydroponically
| Autor: | Dimitrios Savvas, Georgia Ntatsi, Martina Chatzigianni, Aristidis Stamatakis, Ioannis Livieratos, Bara'a Alkhaled |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Nutrition and Dietetics biology Ecotype food and beverages chemistry.chemical_element 04 agricultural and veterinary sciences Asteraceae biology.organism_classification Hydroponics 01 natural sciences Nitrogen chemistry.chemical_compound Nutrient Agronomy Nitrate chemistry Dry weight Shoot 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany Food Science Biotechnology |
| Zdroj: | Journal of the Science of Food and Agriculture. 98:1615-1624 |
| ISSN: | 0022-5142 |
| DOI: | 10.1002/jsfa.8636 |
| Popis: | In the present study, two contrasting stamnagathi (Cichorium spinosum L.) ecotypes originating either from a mountainous or from a seaside habitat were grown hydroponically and supplied with a nutrient solution differing in the total-N level (4 or 16 mmol L-1 ) and the N source (NH4+ -N/total-N: 0.05, 0.25 or 0.50). The aim was to search for genotypic differences in nitrogen nutrition.; Results: At commercial maturity, the dry weight of mountainous plants was higher than that of seaside plants. The shoot mineral concentrations were higher in seaside plants than in mountainous plants in both harvests. The leaf nitrate concentration was influenced by the levels of both total-N and NH4+ -N/total-N at both harvests, whereas plants with a seaside origin exhibited higher nitrate concentrations than those originating from a mountainous site in all total-N and NH4+ -N/total-N treatments.; Conclusion: The two stamnagathi ecotypes differed considerably in their responses to nitrogen nutrition and tissue nitrate content. The mountainous ecotype was superior in terms of growth, tissue nitrate concentration and antioxidant capacity, whereas the seaside ecotype accumulated more nutrient microcations in leaves. A low total-N concentration (up to 4 mmol L-1 ) combined with a high NH4+ -N/total-N ratio (up to 0.05) could minimize tissue NO3- concentrations without compromising yield. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry. |
| Databáze: | OpenAIRE |
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