Reducing the Excessive Evaporative Demand Improved the Water-use Efficiency of Greenhouse Cucumber by Regulating the Trade-off between Irrigation Demand and Plant Productivity
| العنوان: | Reducing the Excessive Evaporative Demand Improved the Water-use Efficiency of Greenhouse Cucumber by Regulating the Trade-off between Irrigation Demand and Plant Productivity |
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| المؤلفون: | Yuping Liu, Jun Li, Lijie Qin, Fei Xu, Yang Li, Zhang Dalong |
| المصدر: | HortScience. 53:1784-1790 |
| بيانات النشر: | American Society for Horticultural Science, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Irrigation, food and beverages, Greenhouse, Agricultural engineering, Horticulture, Trade-off, 01 natural sciences, 03 medical and health sciences, 030104 developmental biology, Plant productivity, Environmental science, Water-use efficiency, 010606 plant biology & botany |
| الوصف: | Although atmospheric evaporative demand mediates water flow and constrains water-use efficiency (WUE) to a large extent, the potential to reduce irrigation demand and improve water productivity by regulating the atmospheric water driving force is highly uncertain. To bridge this gap, water transport in combination with plant productivity was examined in cucumber (Cucumis sativus L.) grown at contrasting evaporative demand gradients. Reducing the excessive vapor pressure deficit (VPD) decreased the water flow rate, which reduced irrigation consumption significantly by 16.4%. Reducing excessive evaporative demand moderated plant water stress, as leaf dehydration, hydraulic limitation, and excessive negative water potential were prevented by maintaining water balance in the low-VPD treatment. The moderation of plant water stress by reducing evaporative demand sustained stomatal function for photosynthesis and plant growth, which increased substantially fruit yield and shoot biomass by 20.1% and 18.4%, respectively. From a physiological perspective, a reduction in irrigation demand and an improvement in plant productivity were achieved concomitantly by reducing the excessive VPD. Consequently, WUE based on the criteria of plant biomass and fruit yield was increased significantly by 43.1% and 40.5%, respectively. |
| تدمد: | 2327-9834 0018-5345 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::5c6c3ae9ba19e9fc9f9b93f4887062b2Test https://doi.org/10.21273/hortsci13129-18Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........5c6c3ae9ba19e9fc9f9b93f4887062b2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23279834 00185345 |
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