Male Meiosis as a Biomarker for Endo- to Ecodormancy Transition in Apricot

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dc.bibliographicCitation.titleFrontiers in Plant Scienceen
dc.bibliographicCitation.volume13es_ES
dc.contributor.authorHerrera Lagranja, Saraes_ES
dc.contributor.authorLora, Jorgees_ES
dc.contributor.authorFadón Adrián, Ericaes_ES
dc.contributor.authorHedhly, Afifes_ES
dc.contributor.authorAlonso Segura, José Manueles_ES
dc.contributor.authorHormaza Urroz, José Ignacioes_ES
dc.contributor.authorRodrigo García, Francisco Javieres_ES
dc.coverage.spatialCiencia vegetales_ES
dc.date.accessioned2022-04-13T09:16:30Z
dc.date.available2022-04-13T09:16:30Z
dc.date.issued2022es_ES
dc.description.abstractDormancy is an adaptive strategy in plants to survive under unfavorable climatic conditions during winter. In temperate regions, most fruit trees need exposure to a certain period of low temperatures to overcome endodormancy. After endodormancy release, exposure to warm temperatures is needed to flower (ecodormancy). Chilling and heat requirements are genetically determined and, therefore, are specific for each species and cultivar. The lack of sufficient winter chilling can cause failures in flowering and fruiting, thereby compromising yield. Thus, the knowledge of the chilling and heat requirements is essential to optimize cultivar selection for different edaphoclimatic conditions. However, the lack of phenological or biological markers linked to the dormant and forcing periods makes it difficult to establish the end of endodormancy. This has led to indirect estimates that are usually not valid in different agroclimatic conditions. The increasing number of milder winters caused by climatic change and the continuous release of new cultivars emphasize the necessity of a proper biological marker linked to the endo- to ecodormancy transition for an accurate estimation of the agroclimatic requirements (AR) of each cultivar. In this work, male meiosis is evaluated as a biomarker to determine endodormancy release and to estimate both chilling and heat requirements in apricot. For this purpose, pollen development was characterized histochemically in 20 cultivars over 8 years, and the developmental stages were related to dormancy. Results were compared to three approaches that indirectly estimate the breaking of dormancy: an experimental methodology by evaluating bud growth in shoots collected periodically throughout the winter months and transferred to forcing chambers over 3 years, and two statistical approaches that relate seasonal temperatures and blooming dates in a series of 11–20 years by correlation and partial least square regression. The results disclose that male meiosis is a possible biomarker to determine the end of endodormancy and estimate AR in apricot.en
dc.description.statusPublishedes_ES
dc.identifier.citationFrontiers in Plant Science, vol. 13, (2022)
dc.identifier.urihttp://hdl.handle.net/10532/5855
dc.language.isoenes_ES
dc.relation.urihttps://www.frontiersin.org/article/10.3389/fpls.2022.842333es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.agrovocPrunus armeniacaes
dc.subject.agrovocNecesidades climáticases
dc.subject.agrovocDormiciónes
dc.subject.agrovocBotones de flores
dc.subject.agrovocModelos dinámicoses
dc.titleMale Meiosis as a Biomarker for Endo- to Ecodormancy Transition in Apricoten
dc.typeJournal Contribution*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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