Phenotypic segregation and relationships of agronomic traits in Monastrell × Syrah wine grape progeny |
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Authors: | Almudena Bayo-Canha José Ignacio Fernández-Fernández Adrian Martínez-Cutillas Leonor Ruiz-García |
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Institution: | 1.Departamento de Biotecnología y Protección de Cultivos,IMIDA (Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario),La Alberca, Murcia,Spain;2.Departamento de Viticultura y Enología,IMIDA (Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario),La Alberca, Murcia,Spain |
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Abstract: | The aim of this work was to study the phenotypic segregation of different agronomic and fruit quality traits, and their relationships,
in Monastrell × Syrah wine grape progeny. Twenty-two agronomic traits were evaluated and compared for three consecutive years
in this progeny. The results show the phenotypic diversity existing in a cross between two different wine grape cultivars.
Most of the phenological, productive, morphological, and enological parameters evaluated displayed continuous variation within
the progeny, suggesting a polygenic inheritance. Some correlations between traits were detected by the Spearman correlation
test, although high coefficients were not found for most of them. Cluster analysis of the progeny grouped the hybrids based
on criteria with significance for wine grape breeding. Also, we investigated the relationship between the skin color and total
content of anthocyanins with the VvmybA genotype, using the CAPS (Cleaved Amplified Polymorphic Sequence) marker 20D18CB9. The results show that hybrids with two
copies of the functional color allele tend to have increased anthocyanins content. Based on this study, 14 genotypes were
pre-selected from the breeding population for additional quality studies. |
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