Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons
Understanding the effects of root temperature on plant growth and key food components of horticultural crops under greenhouse conditions is important. Here, we assess the impact of root cooling on plant growth and fruit quality of two cocktail tomato cultivars (Lycopersicon esculentum cv “Amoroso” a...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Food Quality |
| Online Access: | http://dx.doi.org/10.1155/2019/3598172 |
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| author | F. He B. Thiele M. Watt T. Kraska A. Ulbrich A. J. Kuhn |
| author_facet | F. He B. Thiele M. Watt T. Kraska A. Ulbrich A. J. Kuhn |
| author_sort | F. He |
| collection | DOAJ |
| description | Understanding the effects of root temperature on plant growth and key food components of horticultural crops under greenhouse conditions is important. Here, we assess the impact of root cooling on plant growth and fruit quality of two cocktail tomato cultivars (Lycopersicon esculentum cv “Amoroso” and cv “Delioso”) during the winter of 2017-2018 and the summer of 2018. Plants were grown hydroponically on rockwool under different root temperatures (16–27°C and 10°C) from the 2nd inflorescence to harvest inside the greenhouse. A root temperature of 10°C was controlled independently from air temperature (18–23°C in winter and 21–29°C in summer) by circulating cooling water. Reductions of marketable yield per plant (7.9–20.9%) in both cultivars were observed in response to root cooling in winter, but not significantly in summer. In most cases, root cooling had a positive effect on the functional quality (sugars, vitamin C, and carotenoids levels). In the case of “Delioso,” glucose concentration increased by 7.7–10.3%, vitamin C by 20–21%, and lycopene by 16.9–20.5% in both seasons. “Amoroso” exhibited only higher consistent values in glucose with increments between 6.9 and 7.8% in the two seasons. The levels of elements decreased by root cooling, with statistically significant reduction of N, P, S, and Fe by 12.1–15.7% in “Delioso” in winter and P and Zn by 9.1–22.2% in both cultivars in summer. Thus, manipulation of root temperature could be a feasible method to improve the overall fruit quality of cocktail tomato; however, this effect was also dependent on cultivars and other environmental factors. |
| format | Article |
| id | doaj-art-1800b80d50be48298e3c94db3869463a |
| institution | Kabale University |
| issn | 0146-9428 1745-4557 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Food Quality |
| spelling | doaj-art-1800b80d50be48298e3c94db3869463a2025-02-03T07:24:38ZengWileyJournal of Food Quality0146-94281745-45572019-01-01201910.1155/2019/35981723598172Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive SeasonsF. He0B. Thiele1M. Watt2T. Kraska3A. Ulbrich4A. J. Kuhn5Forschungszentrum Jülich, IBG-2: Plant Science, Wilhelm-Johnen-Straße, 52428 Jülich, GermanyForschungszentrum Jülich, IBG-2: Plant Science, Wilhelm-Johnen-Straße, 52428 Jülich, GermanyForschungszentrum Jülich, IBG-2: Plant Science, Wilhelm-Johnen-Straße, 52428 Jülich, GermanyUniversity of Bonn, Faculty of Agriculture, Campus Klein-Altendorf 1, 53359 Rheinbach, GermanyOsnabrück University of Applied Sciences, Faculty of Agricultural Sciences and Landscape Architecture, Albrechtstr. 30, 49076 Osnabrück, GermanyForschungszentrum Jülich, IBG-2: Plant Science, Wilhelm-Johnen-Straße, 52428 Jülich, GermanyUnderstanding the effects of root temperature on plant growth and key food components of horticultural crops under greenhouse conditions is important. Here, we assess the impact of root cooling on plant growth and fruit quality of two cocktail tomato cultivars (Lycopersicon esculentum cv “Amoroso” and cv “Delioso”) during the winter of 2017-2018 and the summer of 2018. Plants were grown hydroponically on rockwool under different root temperatures (16–27°C and 10°C) from the 2nd inflorescence to harvest inside the greenhouse. A root temperature of 10°C was controlled independently from air temperature (18–23°C in winter and 21–29°C in summer) by circulating cooling water. Reductions of marketable yield per plant (7.9–20.9%) in both cultivars were observed in response to root cooling in winter, but not significantly in summer. In most cases, root cooling had a positive effect on the functional quality (sugars, vitamin C, and carotenoids levels). In the case of “Delioso,” glucose concentration increased by 7.7–10.3%, vitamin C by 20–21%, and lycopene by 16.9–20.5% in both seasons. “Amoroso” exhibited only higher consistent values in glucose with increments between 6.9 and 7.8% in the two seasons. The levels of elements decreased by root cooling, with statistically significant reduction of N, P, S, and Fe by 12.1–15.7% in “Delioso” in winter and P and Zn by 9.1–22.2% in both cultivars in summer. Thus, manipulation of root temperature could be a feasible method to improve the overall fruit quality of cocktail tomato; however, this effect was also dependent on cultivars and other environmental factors.http://dx.doi.org/10.1155/2019/3598172 |
| spellingShingle | F. He B. Thiele M. Watt T. Kraska A. Ulbrich A. J. Kuhn Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons Journal of Food Quality |
| title | Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons |
| title_full | Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons |
| title_fullStr | Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons |
| title_full_unstemmed | Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons |
| title_short | Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons |
| title_sort | effects of root cooling on plant growth and fruit quality of cocktail tomato during two consecutive seasons |
| url | http://dx.doi.org/10.1155/2019/3598172 |
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