Fruit size and firmness QTL alleles of breeding interest identified in a sweet cherry ‘Ambrunés’ × ‘Sweetheart’ population
| Autor: | Francisco Balas, Manuel Joaquín Serradilla, Lichun Cai, Alejandro Calle, Amy Iezzoni, Ana Wünsch, M. López-Corrales |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study Population Haplotype food and beverages Plant Science Biology Heritability Quantitative trait locus 01 natural sciences 03 medical and health sciences Horticulture 030104 developmental biology Genetic linkage Genetics Cultivar Allele education Agronomy and Crop Science Molecular Biology 010606 plant biology & botany Biotechnology SNP array |
| Zdroj: | Zaguán. Repositorio Digital de la Universidad de Zaragoza instname |
| Popis: | The Spanish local cultivar ‘Ambrunes’ stands out due to its high organoleptic quality and fruit firmness. These characteristics make it an important parent for breeding cherries with excellent fresh and post-harvest quality. In this work, an F1 sweet cherry population (n = 140) from ‘Ambrunes’ × ‘Sweetheart’ was phenotyped for 2 years for fruit diameter, weight and firmness and genotyped with the RosBREED cherry Illumina Infinium® 6K SNP array v1. These data were used to construct a linkage map and to carry out quantitative trait locus (QTL) mapping of these fruit quality traits. Genotyping of the parental cultivars revealed that ‘Ambrunes’ is highly heterozygous, and its genetic map is the longest reported in the species using the same SNP array. Phenotypic data analyses confirmed a high heritability of fruit size and firmness and a distorted segregation towards softer and smaller fruits. However, individuals with larger and firmer fruits than the parental cultivars were observed, revealing the presence of alleles of breeding interest. In contrast to other genetic backgrounds in which a negative correlation was observed between firmness and size, in this work, no correlation or low positive correlation was detected between both traits. Firmness, diameter and weight QTLs detected validated QTLs previously found for the same traits in the species, and major QTLs for the three traits were located on a narrow region of LG1 of ‘Ambrunes’. Haplotype analyses of these QTLs revealed haplotypes of breeding interest in coupling phase in ‘Ambrunes’, which can be used for the selection of progeny with larger and firmer fruits. |
| Databáze: | OpenAIRE |
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