The progress in sweet cherry (Prunus avium L.) breeding has been marked by the identification of molecular markers for crucial traits, utilizing genome sequencing for marker-assisted selection (MAS). Despite these achievements, quantitative trait locus (QTL) analyses have often lacked resolution, leading to missed gene associations.
Traditional breeding methods face challenges related to low efficiency and high costs. Recent developments in whole-genome sequencing have uncovered nearly 2 million single nucleotide polymorphisms (SNPs), promising higher marker density for genome-wide association studies (GWAS). However, uneven SNP distribution remains an obstacle, hindering the identification of candidate genes. The current hurdle is to leverage GWAS potential for high-resolution mapping to expedite the breeding of improved sweet cherry varieties.
Researchers employed paired-end sequencing on the Illumina NovaSeq 6000 platform, generating a 4.15-Tb sequence with samples contributing 7.6–36.8 Gb each. The extensive genome coverage allowed the identification of 1,767,106 high-quality SNPs distributed across the accessions. Principal component analysis (PCA) and Bayesian information criterion (BIC) indicated a homogeneous population without distinct genetic subgroups.
Phenotypic diversity assessed from 2012 to 2020 revealed significant variability across traits, with Collection of Genetic Resources (CGR) accessions displaying more pronounced diversity than breeding materials (BM). Notable differences in color traits and fruit size were observed, aligning with the goals of selective breeding.
Collection of Genetic Resources population structure analysis. A) Principal component (PC) analysis plot of the first two PCs identified from 235 accessions based on 1,767,106 single nucleotide polymorphisms. B) Heat map of a kinship matrix estimated using the VanRaden algorithm. Both plots were generated with GAPIT.
Source: EurekAlert!
Image: High-resolution genome-wide association study of a large Czech collection of sweet cherry (Prunus avium L.) on fruit maturity and quality traits - Scientific Figure on ResearchGate. https://www.researchgate.net/figure/Collection-of-Genetic-Resources-population-structure-analysis-A-Principal-component_fig1_364394570.
03 Nov 2023
The Veneto-based group, which has been involved in cold management for more than 35 years, is working on eliminating the time between the cherry's detachment from the plant and the moment when the temperature is lowered, with the 'Danese Hydrocooling System'.
18 Jul 2023
On Thursday 29 June, an unprecedented technical event took place at the Sun Monticello Conference Centre: Cherry Tech 2023 brought together more than a thousand people who actively participated in the three masterclasses.
29 May 2026
From Carlo Petrini to the Slow Food Presidia, the future of cherry growing depends on biodiversity. Vignola Moretta Cherry shows an agricultural model that resists global standardization, linking Europe, Turkey and resilient local territories against intensive monocultures.
29 May 2026
Rivoira Group launches Skylar Rae, a premium bicolor cherry without stems, bringing the CherryBerry concept to Italy and Europe. Designed as a crunchy, ready-to-eat natural snack, it debuts commercially in June 2026 across Italy, Germany and selected overseas markets as well.
