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dc.contributor.authorGarrido Fernández, Alejandro 
dc.contributor.authorFernández González, María 
dc.contributor.authorVázquez Ruiz, Rosa A.
dc.contributor.authorRodríguez Rajo, Francisco Javier 
dc.contributor.authorAira Rodríguez, María Jesús
dc.date.accessioned2021-04-21T09:23:53Z
dc.date.available2021-04-21T09:23:53Z
dc.date.issued2021-02-10
dc.identifier.citationForests, 12(2): 204 (2021)spa
dc.identifier.issn19994907
dc.identifier.urihttp://hdl.handle.net/11093/1984
dc.description.abstractIn recent years, North-western Spain has experienced an increase in the cultivated area of olive trees. The main propitious areas for olive groves are the Miño and Sil basins, as a consequence of their Oceanic climate with Mediterranean influence. The objective of this study is to determine the characteristics of reproductive biology, phenological and aerobiological behaviour of olive trees in the most northerly new plantation areas of the Iberian Peninsula. The study was carried out in an olive grove growing Olea europaea L. cv. ‘Arbequina’ located in Quiroga (Lugo) from 2016 to 2018. The phenological observations were based upon the main growth stages following the Biologische Bundesanstalt Bundessortenamt and Chemical industry (BBCH) scale. To predict the onset of flowering, a thermal time model was used in order to quantify the chill requirements, and growing degree-days were applied to determine the heat requirement. The production, viability and germination rates of Olea pollen were evaluated from samples selected in nine individual trees for the phenological survey. The aerobiological study was conducted by means of a Hirst-type pollen trap located in the centre of the olive grove. The vegetative period of the olive tree in the study area lasted an average of 259 days. The important phenological stage 6 (flowering) was the shortest stage. An average of 704 Chilling Hours (CH) with a threshold of 2.5 °C was required to overcome the chilling period, 1139 Growing Degree Days (GDD) for the beginning of flowering, and 4463 GDD for harvest. The pollen production per anther was 82589 grains (± 14084 pollen grains), with a rate of 81% viability and 12% pollen tube germination. The main pollen season started on average on May 20th and ended on June 16th with an average duration of 27 days and an annual pollen integral of 833 pollen grains. The low pollen concentrations could be a consequence of the Northern location of the forest, in a bioclimatic transition zone between the Eurosiberian and the Mediterranean areas, at the limit of olive tree distribution.spa
dc.description.sponsorshipXunta de Galicia | Ref. ED431C 2019/07spa
dc.description.sponsorshipXunta de Galicia | Ref. ED431E 2018/09spa
dc.description.sponsorshipXunta de Galicia | Ref. ED431C 2017/62spa
dc.description.sponsorshipXunta de Galicia | Ref. ED431E 2018/07spa
dc.description.sponsorshipMinisterio de Economía y Competencia (España) | Ref. AGL2014-60412-Rspa
dc.language.isoengspa
dc.publisherForestsspa
dc.rightsCreative Commons Attribution (CC BY) license
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleReproductive biology of olive trees (Arbequina cultivar) at the Northern limit of their distribution areasspa
dc.typearticlespa
dc.rights.accessRightsopenAccessspa
dc.identifier.doi10.3390/f12020204
dc.identifier.editorhttps://www.mdpi.com/1999-4907/12/2/204spa
dc.publisher.departamentoBioloxía vexetal e ciencias do solospa
dc.publisher.grupoinvestigacionPranta, Solo e Aproveitamento de Subproductosspa
dc.subject.unesco2416.03 Palinologíaspa
dc.subject.unesco2417.08 Fitobiologíaspa
dc.subject.unesco2417.03 Botánica Generalspa
dc.date.updated2021-04-15T11:15:46Z
dc.computerCitationpub_title=Forests|volume=12|journal_number=2|start_pag=204|end_pag=spa


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