Cargando…
Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer
Although atmospheric vapour pressure deficit (VPD) has been widely recognized as the evaporative driving force for water transport, the potential to reduce plant water consumption and improve water productivity by regulating VPD is highly uncertain. To bridge this gap, water transport in combination...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5339896/ https://www.ncbi.nlm.nih.gov/pubmed/28266524 http://dx.doi.org/10.1038/srep43461 |
_version_ | 1782512739994828800 |
---|---|
author | Zhang, Dalong Du, Qingjie Zhang, Zhi Jiao, Xiaocong Song, Xiaoming Li, Jianming |
author_facet | Zhang, Dalong Du, Qingjie Zhang, Zhi Jiao, Xiaocong Song, Xiaoming Li, Jianming |
author_sort | Zhang, Dalong |
collection | PubMed |
description | Although atmospheric vapour pressure deficit (VPD) has been widely recognized as the evaporative driving force for water transport, the potential to reduce plant water consumption and improve water productivity by regulating VPD is highly uncertain. To bridge this gap, water transport in combination with plant productivity was examined in tomato (Solanum lycopersicum L.) plants grown under contrasting VPD gradients. The driving force for water transport was substantially reduced in low-VPD treatment, which consequently decreased water loss rate and moderated plant water stress: leaf desiccation, hydraulic limitation and excessive negative water potential were prevented by maintaining water balance. Alleviation in water stress by reducing VPD sustained stomatal function and photosynthesis, with concomitant improvements in biomass and fruit production. From physiological perspectives, suppression of the driving force and water flow rate substantially reduced cumulative transpiration by 19.9%. In accordance with physiological principles, irrigation water use efficiency as criterions of biomass and fruit yield in low-VPD treatment was significantly increased by 36.8% and 39.1%, respectively. The reduction in irrigation was counterbalanced by input of fogging water to some extent. Net water saving can be increased by enabling greater planting densities and improving the evaporative efficiency of the mechanical system. |
format | Online Article Text |
id | pubmed-5339896 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53398962017-03-10 Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer Zhang, Dalong Du, Qingjie Zhang, Zhi Jiao, Xiaocong Song, Xiaoming Li, Jianming Sci Rep Article Although atmospheric vapour pressure deficit (VPD) has been widely recognized as the evaporative driving force for water transport, the potential to reduce plant water consumption and improve water productivity by regulating VPD is highly uncertain. To bridge this gap, water transport in combination with plant productivity was examined in tomato (Solanum lycopersicum L.) plants grown under contrasting VPD gradients. The driving force for water transport was substantially reduced in low-VPD treatment, which consequently decreased water loss rate and moderated plant water stress: leaf desiccation, hydraulic limitation and excessive negative water potential were prevented by maintaining water balance. Alleviation in water stress by reducing VPD sustained stomatal function and photosynthesis, with concomitant improvements in biomass and fruit production. From physiological perspectives, suppression of the driving force and water flow rate substantially reduced cumulative transpiration by 19.9%. In accordance with physiological principles, irrigation water use efficiency as criterions of biomass and fruit yield in low-VPD treatment was significantly increased by 36.8% and 39.1%, respectively. The reduction in irrigation was counterbalanced by input of fogging water to some extent. Net water saving can be increased by enabling greater planting densities and improving the evaporative efficiency of the mechanical system. Nature Publishing Group 2017-03-07 /pmc/articles/PMC5339896/ /pubmed/28266524 http://dx.doi.org/10.1038/srep43461 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Zhang, Dalong Du, Qingjie Zhang, Zhi Jiao, Xiaocong Song, Xiaoming Li, Jianming Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title | Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title_full | Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title_fullStr | Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title_full_unstemmed | Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title_short | Vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
title_sort | vapour pressure deficit control in relation to water transport and water productivity in greenhouse tomato production during summer |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5339896/ https://www.ncbi.nlm.nih.gov/pubmed/28266524 http://dx.doi.org/10.1038/srep43461 |
work_keys_str_mv | AT zhangdalong vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer AT duqingjie vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer AT zhangzhi vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer AT jiaoxiaocong vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer AT songxiaoming vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer AT lijianming vapourpressuredeficitcontrolinrelationtowatertransportandwaterproductivityingreenhousetomatoproductionduringsummer |