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Variation of morphological descriptors for the evaluation of tomato germplasm and their stability across different growing conditions

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Variation of morphological descriptors for the evaluation of tomato germplasm and their stability across different growing conditions

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dc.contributor.author Figás-Moreno, María Del Rosario es_ES
dc.contributor.author Prohens Tomás, Jaime es_ES
dc.contributor.author Casanova-Calancha, Cristina es_ES
dc.contributor.author Fernández de Córdova Martínez, Pascual José es_ES
dc.contributor.author Soler Aleixandre, Salvador es_ES
dc.date.accessioned 2019-01-12T21:03:30Z
dc.date.available 2019-01-12T21:03:30Z
dc.date.issued 2018 es_ES
dc.identifier.issn 0304-4238 es_ES
dc.identifier.uri http://hdl.handle.net/10251/115302
dc.description.abstract [EN] Germplasm and breeding materials are usually characterized using morphological and agronomic descriptors, which should have a high heritability. Despite the widespread use of tomato (Solanum lycopersicum) standardized descriptors, little information exists on environmental effects on descriptor values and their heritability. We have evaluated 12 tomato accessions from seven cultivar groups in three different environments (open-field conventional, open-field organic, and greenhouse) and characterized them with 36 descriptors. A wide range of variation was found for most descriptors, demonstrating their utility for describing tomato materials and their diversity and relationships. The analysis of descriptors variation reveals that while for some descriptors with a simple genetic control the accession effect accounts for 100% of the variation, for others like yield per plant only 10.83% of the variation observed is due to the accession effect. Although significant differences were found among environments for most descriptors, including a much higher yield in the open-field conventional environment than in the two others, the environmental effect was low for most traits. However, the genotype×environment effect generally had an important contribution to the structure of variation for many descriptors, and for three traits it had the highest contribution to the percentage of the sum of squares. As a result of the variation structure, the heritability values are high (> 0.7) for only 10 descriptors, while for five is low (< 0.3). Principal components analysis (PCA) reveals that projections in the PCA graph of a same accession grown in different environments plot together in the same area of the PCA graph. Although cultivar groups are generally clearly separated in the PCA graph, accessions from the same cultivar group in some cases are intermixed. These results have important implications for detecting tomato duplicates and establishing core collections, as well as for analyzing germplasm and breeding results, when using data sets containing data of accessions grown in different environments. es_ES
dc.description.sponsorship This work has been partially funded by the TRADITOM (Traditional tomato varieties and cultural practices: a case for agricultural diversification with impacto n food security and health of European population) and G2P-SOL (Linking genetic resources, genomes and phenotypes of Solanaceous crops) projects. These projects have received funding from the European Union's Horizon 2020 research and innovation programme under grant agreements No 634561 (TRADITOM) and No 677379 (G2P-SOL). Authors are grateful to Mr. Jonatan Cerdan for his technical help.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Scientia Horticulturae es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Characterization es_ES
dc.subject Descriptors es_ES
dc.subject Genotype×environment interaction es_ES
dc.subject Germplasm es_ES
dc.subject Heritability es_ES
dc.subject Solanum lycopersicum
dc.subject.classification GENETICA es_ES
dc.title Variation of morphological descriptors for the evaluation of tomato germplasm and their stability across different growing conditions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.scienta.2018.04.039 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/634561/EU/Traditional tomato varieties and cultural practices: a case for agricultural diversification with impact on food security and health of European population/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/677379/EU/Linking genetic resources, genomes and phenotypes of Solanaceous crops/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Conservación y Mejora de la Agrodiversidad Valenciana - Institut Universitari de Conservació i Millora de l'Agrodiversitat Valenciana es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Biotecnología - Departament de Biotecnologia es_ES
dc.description.bibliographicCitation Figás-Moreno, MDR.; Prohens Tomás, J.; Casanova-Calancha, C.; Fernández De Córdova Martínez, PJ.; Soler Aleixandre, S. (2018). Variation of morphological descriptors for the evaluation of tomato germplasm and their stability across different growing conditions. Scientia Horticulturae. 238:107-115. https://doi.org/10.1016/j.scienta.2018.04.039 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.scienta.2018.04.039 es_ES
dc.description.upvformatpinicio 107 es_ES
dc.description.upvformatpfin 115 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 238 es_ES
dc.relation.pasarela S\361565 es_ES
dc.contributor.funder European Commission es_ES


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