Issue |
BIO Web Conf.
Volume 68, 2023
44th World Congress of Vine and Wine
|
|
---|---|---|
Article Number | 01014 | |
Number of page(s) | 4 | |
Section | Viticulture | |
DOI | https://doi.org/10.1051/bioconf/20236801014 | |
Published online | 06 December 2023 |
The effect of drought memory on grapevine physio logical responses to water deficit and recovery
1 INIAV – Instituto Nacional de Investigação Agrária e Veterinária, I.P., Oeiras, Portugal
2 CEF – Centro de Estudos Florestais, Associate Laboratory TERRA, ISA-ULisboa, Lisboa, Portugal
3 SFCoLAB – Laboratório Colaborativo para a Inovação Digital na Agricultura, Torres Vedras, Portugal
4 LEAF - Linking Landscape, Environment, Agriculture and Food Research Centre, Associate Laboratory TERRA, ISA- ULisboa, Lisboa, Portugal
** Corresponding author: lcarvalho@isa.ulisboa.pt; olfa.zarrouk@sfcolab.org
* Both authors contribute equally to the work
To cope with water stress, grapevine developed efficient adaptation mechanisms to transfer water from roots to shoots, mediated by an efficient stomatal control of transpiration. Each variety has a specific water use regulation response under drought, which is important to study. In the present work, we explored the influence of the field-grown genotypes’ drought memory in the drought-response phenotype of their vegetative progenies, in Trincadeira (isohydric) and Castelão (anisohydric) cultivars under a drought event followed by recovery. These progenies were subjected to full irrigation (FI) and non-irrigation (NI) for five years in the field, and their progenies were in grown in a glasshouse and subjected to a well-watered and a water- stress treatment, followed by recovery. NI progenies from both cultivars had improved gas exchange parameters, better total plant hydraulic conductance under drought, and faster recovery than FI progenies. Nocturnal transpiration was affected both by progeny and treatment. Leaf wax content was significantly enhanced by WS both in FI and NI progenies, but it was higher in NI progenies. Although isohydric and anisohydric genotypes exhibited different drought acclimation responses due to their inner genetic behavior, their underlying hydraulic, stomatal and photosynthetic regulatory mechanisms were also affected by historical origin.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.