Studying and modelling winter dormancy in olive trees
The abundance of scientific papers dealing with olive reproductive phenology contrasts with the scarce information available in relation to the winter dormant state of olive vegetative structures. In this study, three experiments with young olive trees were performed in Southern Spain, aiming to provide insight into some features of the winter rest period in this evergreen species. Experiment 1 evaluated the environmental cues triggering dormancy induction by measuring leaf appearance rates in trees subjected to different conditions of temperature and daylength over the course of the 2012 autumn. In Experiment 2, several sets of plants were placed into a greenhouse at different dates along the 2013/2014 winter, testing the ability of dormant plants to resume growth upon the return of favourable temperatures. Finally, Experiment 3 was carried out during the autumns of 2016 and 2017 in two locations, and was devoted to assess differences between five cultivars in the onset of dormancy under natural conditions. Our findings revealed that dormancy induction is not controlled by photoperiod, but by low temperatures. The subsequent winter rest state seems to be easily reversed after 1–2 weeks of exposure to warm conditions, irrespective of the initial date of exposure. With regard to cultivar variability, differences in the timing of growth cessation was found to be rather small. Finally, two simple models for predicting the onset of dormancy based on the accumulation of a certain amount of chilling (either considering or not a reversal of chilling by warm temperatures) are presented. Calibration and validation was performed with independent datasets from Experiments 1, 2 and 3. Validation tests highlighted the reliability of both models in reproducing the date of growth cessation.
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Elsevier
2020-01-15
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Subjects: | Dormancy, Growth cessation, Olea europaea L, Phenology, Photoperiod, Temperatures, Vegetative growth, |
Online Access: | http://hdl.handle.net/10261/227166 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100000780 |
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dig-ias-es-10261-2271662021-01-26T04:45:12Z Studying and modelling winter dormancy in olive trees López-Bernal, Álvaro García-Tejera, Omar Testi, Luca Orgaz Rosua, Francisco Villalobos, Francisco J. Ministerio de Economía y Competitividad (España) European Commission Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth The abundance of scientific papers dealing with olive reproductive phenology contrasts with the scarce information available in relation to the winter dormant state of olive vegetative structures. In this study, three experiments with young olive trees were performed in Southern Spain, aiming to provide insight into some features of the winter rest period in this evergreen species. Experiment 1 evaluated the environmental cues triggering dormancy induction by measuring leaf appearance rates in trees subjected to different conditions of temperature and daylength over the course of the 2012 autumn. In Experiment 2, several sets of plants were placed into a greenhouse at different dates along the 2013/2014 winter, testing the ability of dormant plants to resume growth upon the return of favourable temperatures. Finally, Experiment 3 was carried out during the autumns of 2016 and 2017 in two locations, and was devoted to assess differences between five cultivars in the onset of dormancy under natural conditions. Our findings revealed that dormancy induction is not controlled by photoperiod, but by low temperatures. The subsequent winter rest state seems to be easily reversed after 1–2 weeks of exposure to warm conditions, irrespective of the initial date of exposure. With regard to cultivar variability, differences in the timing of growth cessation was found to be rather small. Finally, two simple models for predicting the onset of dormancy based on the accumulation of a certain amount of chilling (either considering or not a reversal of chilling by warm temperatures) are presented. Calibration and validation was performed with independent datasets from Experiments 1, 2 and 3. Validation tests highlighted the reliability of both models in reproducing the date of growth cessation. This work was supported by Ministerio de Economía y Competitividad [grant numbers AGL-2010-20766, AGL-2015-69822]; ERA-NET FACCE SURPLUS[grant number 652615, project OLIVE-MIRACLE], the latter co-funded by INIA [PCIN-2015-259]. In addition, AL-B was supported by a postdoctoral fellowship of the ‘Juan de la Cierva-formación’ programme funded by Ministerio de Economía y Competitividad [grant number FJCI-2015-24109]. 2021-01-20T13:10:05Z 2021-01-20T13:10:05Z 2020-01-15 2021-01-20T13:10:06Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.agrformet.2019.107776 issn: 0168-1923 Agricultural and Forest Meteorology 280: 107776 (2020) http://hdl.handle.net/10261/227166 10.1016/j.agrformet.2019.107776 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100000780 #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL-2010-20766 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FJCI-2015-24109 http://doi.org/10.1016/j.agrformet.2019.107776 Sí none Elsevier |
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Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth |
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Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth López-Bernal, Álvaro García-Tejera, Omar Testi, Luca Orgaz Rosua, Francisco Villalobos, Francisco J. Studying and modelling winter dormancy in olive trees |
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The abundance of scientific papers dealing with olive reproductive phenology contrasts with the scarce information available in relation to the winter dormant state of olive vegetative structures. In this study, three experiments with young olive trees were performed in Southern Spain, aiming to provide insight into some features of the winter rest period in this evergreen species. Experiment 1 evaluated the environmental cues triggering dormancy induction by measuring leaf appearance rates in trees subjected to different conditions of temperature and daylength over the course of the 2012 autumn. In Experiment 2, several sets of plants were placed into a greenhouse at different dates along the 2013/2014 winter, testing the ability of dormant plants to resume growth upon the return of favourable temperatures. Finally, Experiment 3 was carried out during the autumns of 2016 and 2017 in two locations, and was devoted to assess differences between five cultivars in the onset of dormancy under natural conditions. Our findings revealed that dormancy induction is not controlled by photoperiod, but by low temperatures. The subsequent winter rest state seems to be easily reversed after 1–2 weeks of exposure to warm conditions, irrespective of the initial date of exposure. With regard to cultivar variability, differences in the timing of growth cessation was found to be rather small. Finally, two simple models for predicting the onset of dormancy based on the accumulation of a certain amount of chilling (either considering or not a reversal of chilling by warm temperatures) are presented. Calibration and validation was performed with independent datasets from Experiments 1, 2 and 3. Validation tests highlighted the reliability of both models in reproducing the date of growth cessation. |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) López-Bernal, Álvaro García-Tejera, Omar Testi, Luca Orgaz Rosua, Francisco Villalobos, Francisco J. |
format |
artículo |
topic_facet |
Dormancy Growth cessation Olea europaea L Phenology Photoperiod Temperatures Vegetative growth |
author |
López-Bernal, Álvaro García-Tejera, Omar Testi, Luca Orgaz Rosua, Francisco Villalobos, Francisco J. |
author_sort |
López-Bernal, Álvaro |
title |
Studying and modelling winter dormancy in olive trees |
title_short |
Studying and modelling winter dormancy in olive trees |
title_full |
Studying and modelling winter dormancy in olive trees |
title_fullStr |
Studying and modelling winter dormancy in olive trees |
title_full_unstemmed |
Studying and modelling winter dormancy in olive trees |
title_sort |
studying and modelling winter dormancy in olive trees |
publisher |
Elsevier |
publishDate |
2020-01-15 |
url |
http://hdl.handle.net/10261/227166 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100000780 |
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