Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2012. / The effects of various water quantities were assessed on Cucumber (Cucumis sativa L.)
grown hydroponically in the greenhouse. The objectives of the study were to evaluate
influence of water quantities on: i) photosynthesis and chlorophyll content of Cucumis sativa
L.; ii) the nutrient uptake in Cucumis sativa L. iii) flavonoid and anthocyanin metabolism in
Cucumis sativa L. and iv) growth and yield in Cucumis sativa L. The treatments included 8
various water regimes (21/h, 41/h, 61/h, 81/h, 101/h, 121/h, 141/h and 161/h. The plants received
water five times a day, making it 10, 20, 30, 40, 50, 60, 70, and 80 litres per day.
Results showed that generally the Photosynthetic rate (A), intercellular CO2 concentration
(Cj) and stomata conductance (gs) and the transpiration rate of the cucumber plants were
significantly increased by increasing water quantities compared with lower water quantities.
Additionally, there were significant improvements in leaf colour in weeks 2, 3, 4, 5, 6, 7 and
8. Overall, the foliage colour was improved as water supply was increased. The greener
leaves were documented in treatments supplied with higher water doses. Additionally, the
chlorophyll content of cucumber plants was increased significantly with varying water
quantities. The highest chlorophyll contents were found in plants treated with 161/h.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cput/oai:localhost:20.500.11838/2026 |
| Date | January 2012 |
| Creators | Sonnenberg, Donavon Mark |
| Contributors | Ndakidemi, P., Laubscher, Charles, Cape Peninsula University of Technology. Faculty of Applied Sciences. Department of Horticultural Sciences. |
| Publisher | Cape Peninsula University of Technology |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | http://creativecommons.org/licenses/by-nc-sa/3.0/za/ |
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