Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation
As climate change evokes changing precipitation patterns, the cultivation of vegetable crops in open fields might become more difficult in the future. Nowadays, many vegetable growers are already facing relatively long unprecedented precipitation-free periods. In many growing regions, irrigation is...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/8/1097 |
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| author | Christine Schlering Ralf Schweiggert Helmut Dietrich Matthias Frisch Jana Zinkernagel |
| author_facet | Christine Schlering Ralf Schweiggert Helmut Dietrich Matthias Frisch Jana Zinkernagel |
| author_sort | Christine Schlering |
| collection | DOAJ |
| description | As climate change evokes changing precipitation patterns, the cultivation of vegetable crops in open fields might become more difficult in the future. Nowadays, many vegetable growers are already facing relatively long unprecedented precipitation-free periods. In many growing regions, irrigation is only available to a limited extent or not at all, and the cultivated plants will suffer from moderate water stress more often. Therefore, we examined the effects of moderately-reduced water supply on the chemical composition of pickling cucumber, cultivated in an open field and in a separate greenhouse trial. In the field trial, the reduced water supply treatment (RWS) provided 85–90% of the total water amount of the well-watered control treatment (CTR), applying a randomized block design with six replications comprising two consecutive weekly harvest periods. In fruits obtained by cultivation with reduced irrigation, levels of malic acid, calcium, and magnesium significantly increased, while those of phosphate, phosphorous, nitrogen, and iron decreased based on dry matter. Fresh matter-related results additionally revealed a decrease of <i>myo</i>-inositol and zinc, while sugars and total phenols remained unchanged. In the greenhouse experiment, the RWS obtained 60% of the irrigation amount of the CTR. Here, single cucumber compartments (exocarp, mesocarp, and endocarp) were examined. Chemical compositions changed in a similar, but more pronounced, manner as compared to the open field trial. The levels of individual, nutritionally relevant carotenoids in the peel of pickling cucumber, like lutein and β-carotene, were affected by RWS. Regarding the nutritional quality of fresh marketable cucumber fruits, malic acid, certain minerals and trace elements, as well as the carotenoids were shown to be sensitive to moderate water reduction. |
| first_indexed | 2024-03-10T18:07:50Z |
| format | Article |
| id | doaj.art-21cacb58ffa24d91973d374fc9e89c56 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T18:07:50Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-21cacb58ffa24d91973d374fc9e89c562023-11-20T08:20:00ZengMDPI AGAgronomy2073-43952020-07-01108109710.3390/agronomy10081097Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field CultivationChristine Schlering0Ralf Schweiggert1Helmut Dietrich2Matthias Frisch3Jana Zinkernagel4Department of Beverage Research, Geisenheim University, 65366 Geisenheim, GermanyDepartment of Beverage Research, Geisenheim University, 65366 Geisenheim, GermanyDepartment of Beverage Research, Geisenheim University, 65366 Geisenheim, GermanyDepartment of Biometry and Population Genetics, Justus Liebig University, 35392 Giessen, GermanyDepartment of Vegetable Crops, Geisenheim University, 65366 Geisenheim, GermanyAs climate change evokes changing precipitation patterns, the cultivation of vegetable crops in open fields might become more difficult in the future. Nowadays, many vegetable growers are already facing relatively long unprecedented precipitation-free periods. In many growing regions, irrigation is only available to a limited extent or not at all, and the cultivated plants will suffer from moderate water stress more often. Therefore, we examined the effects of moderately-reduced water supply on the chemical composition of pickling cucumber, cultivated in an open field and in a separate greenhouse trial. In the field trial, the reduced water supply treatment (RWS) provided 85–90% of the total water amount of the well-watered control treatment (CTR), applying a randomized block design with six replications comprising two consecutive weekly harvest periods. In fruits obtained by cultivation with reduced irrigation, levels of malic acid, calcium, and magnesium significantly increased, while those of phosphate, phosphorous, nitrogen, and iron decreased based on dry matter. Fresh matter-related results additionally revealed a decrease of <i>myo</i>-inositol and zinc, while sugars and total phenols remained unchanged. In the greenhouse experiment, the RWS obtained 60% of the irrigation amount of the CTR. Here, single cucumber compartments (exocarp, mesocarp, and endocarp) were examined. Chemical compositions changed in a similar, but more pronounced, manner as compared to the open field trial. The levels of individual, nutritionally relevant carotenoids in the peel of pickling cucumber, like lutein and β-carotene, were affected by RWS. Regarding the nutritional quality of fresh marketable cucumber fruits, malic acid, certain minerals and trace elements, as well as the carotenoids were shown to be sensitive to moderate water reduction.https://www.mdpi.com/2073-4395/10/8/1097vegetableswater deficitclimate changenutritional valuesfruit compartments |
| spellingShingle | Christine Schlering Ralf Schweiggert Helmut Dietrich Matthias Frisch Jana Zinkernagel Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation Agronomy vegetables water deficit climate change nutritional values fruit compartments |
| title | Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation |
| title_full | Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation |
| title_fullStr | Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation |
| title_full_unstemmed | Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation |
| title_short | Effects of Moderately-Reduced Water Supply and Picking Time on the Chemical Composition of Pickling Cucumber (<i>Cucumis sativus</i> L.) in Open Field Cultivation |
| title_sort | effects of moderately reduced water supply and picking time on the chemical composition of pickling cucumber i cucumis sativus i l in open field cultivation |
| topic | vegetables water deficit climate change nutritional values fruit compartments |
| url | https://www.mdpi.com/2073-4395/10/8/1097 |
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