Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i>
Soil salinization is one of the major environmental factors responsible for limited crop production throughout the world. Therefore, there is urgent need to find tolerant/resistant species to exploit in commercial cultivation systems. In this context, the valorization of wild edible greens for human...
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MDPI AG
2021-06-01
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| Series: | Horticulturae |
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| author | Alexios A. Alexopoulos Anna Assimakopoulou Panagiotis Panagopoulos Maria Bakea Nikolina Vidalis Ioannis C. Karapanos Spyridon A. Petropoulos |
| author_facet | Alexios A. Alexopoulos Anna Assimakopoulou Panagiotis Panagopoulos Maria Bakea Nikolina Vidalis Ioannis C. Karapanos Spyridon A. Petropoulos |
| author_sort | Alexios A. Alexopoulos |
| collection | DOAJ |
| description | Soil salinization is one of the major environmental factors responsible for limited crop production throughout the world. Therefore, there is urgent need to find tolerant/resistant species to exploit in commercial cultivation systems. In this context, the valorization of wild edible greens for human consumption and/or medicinal purposes is gaining more and more interest. The aim of the present work was to study the effect of salinity, e.g., electrical conductivity: 2 mS cm<sup>−1</sup> (nutrient solution EC), 6 mS cm<sup>−1</sup> and 10 mS cm<sup>−1</sup> on plant growth and chemical composition of <i>Reichardia picroides</i> and <i>Taraxacum officinale</i> plants grown in a floating hydroponic system. The results showed that <i>R. picroides</i> is a moderately salt-tolerant species, as the majority of plant growth parameters determined were not negatively affected under the treatment of 6 mS cm<sup>−1</sup>. On the other hand, the growth parameters of <i>T. officinale</i> plants were severely affected under the same conditions. Moreover, high salinity levels (EC at 10 mS cm<sup>−1</sup>) impaired the growth of both species. The content of leaves in chlorophylls (a, b and total), carotenoids+xanthophylls and total soluble solids was not significantly affected by the tested EC levels in both species, whereas the titratable acidity increased under the treatment of 10 mS cm<sup>−1</sup>. Moreover, <i>R. picroides</i> exhibited a more effective adaptation mechanism against saline conditions than <i>T. officinale</i>, as evidenced by the higher accumulation of osmolytes such as proline and the higher shoot K content, probably through a more efficient K/Na selectivity. In conclusion, both species were severely affected by high salinity; however, <i>R. picroides</i> showed promising results regarding its commercial cultivation under moderate salinity levels, especially in regions where resources of high-quality irrigation water are limited. |
| first_indexed | 2024-03-10T10:11:49Z |
| format | Article |
| id | doaj.art-8e34a7ebe82a4f65b5719a9139ced3e8 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T10:11:49Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
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| series | Horticulturae |
| spelling | doaj.art-8e34a7ebe82a4f65b5719a9139ced3e82023-11-22T01:07:55ZengMDPI AGHorticulturae2311-75242021-06-017716010.3390/horticulturae7070160Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i>Alexios A. Alexopoulos0Anna Assimakopoulou1Panagiotis Panagopoulos2Maria Bakea3Nikolina Vidalis4Ioannis C. Karapanos5Spyridon A. Petropoulos6Laboratory of Agronomy, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, GreeceLaboratory of Plant Physiology, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, GreeceLaboratory of Agronomy, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, GreeceLaboratory of Plant Physiology, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, GreeceLaboratory of Vegetable Production, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, GreeceLaboratory of Vegetable Production, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, GreeceLaboratory of Vegetable Production, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 384 46 Volos, GreeceSoil salinization is one of the major environmental factors responsible for limited crop production throughout the world. Therefore, there is urgent need to find tolerant/resistant species to exploit in commercial cultivation systems. In this context, the valorization of wild edible greens for human consumption and/or medicinal purposes is gaining more and more interest. The aim of the present work was to study the effect of salinity, e.g., electrical conductivity: 2 mS cm<sup>−1</sup> (nutrient solution EC), 6 mS cm<sup>−1</sup> and 10 mS cm<sup>−1</sup> on plant growth and chemical composition of <i>Reichardia picroides</i> and <i>Taraxacum officinale</i> plants grown in a floating hydroponic system. The results showed that <i>R. picroides</i> is a moderately salt-tolerant species, as the majority of plant growth parameters determined were not negatively affected under the treatment of 6 mS cm<sup>−1</sup>. On the other hand, the growth parameters of <i>T. officinale</i> plants were severely affected under the same conditions. Moreover, high salinity levels (EC at 10 mS cm<sup>−1</sup>) impaired the growth of both species. The content of leaves in chlorophylls (a, b and total), carotenoids+xanthophylls and total soluble solids was not significantly affected by the tested EC levels in both species, whereas the titratable acidity increased under the treatment of 10 mS cm<sup>−1</sup>. Moreover, <i>R. picroides</i> exhibited a more effective adaptation mechanism against saline conditions than <i>T. officinale</i>, as evidenced by the higher accumulation of osmolytes such as proline and the higher shoot K content, probably through a more efficient K/Na selectivity. In conclusion, both species were severely affected by high salinity; however, <i>R. picroides</i> showed promising results regarding its commercial cultivation under moderate salinity levels, especially in regions where resources of high-quality irrigation water are limited.https://www.mdpi.com/2311-7524/7/7/160dandelioncommon brighteyeswild edible greenschemical compositionnutrient contentssoilless cultivation |
| spellingShingle | Alexios A. Alexopoulos Anna Assimakopoulou Panagiotis Panagopoulos Maria Bakea Nikolina Vidalis Ioannis C. Karapanos Spyridon A. Petropoulos Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> Horticulturae dandelion common brighteyes wild edible greens chemical composition nutrient contents soilless cultivation |
| title | Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> |
| title_full | Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> |
| title_fullStr | Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> |
| title_full_unstemmed | Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> |
| title_short | Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: <i>Taraxacum officinale</i> and <i>Reichardia picroides</i> |
| title_sort | impact of salinity on the growth and chemical composition of two underutilized wild edible greens i taraxacum officinale i and i reichardia picroides i |
| topic | dandelion common brighteyes wild edible greens chemical composition nutrient contents soilless cultivation |
| url | https://www.mdpi.com/2311-7524/7/7/160 |
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