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.
12 Aug 2025
US cherry exports to China have plunged due to trade tensions, redirecting supply to markets like Vietnam and Hong Kong. Prices have hit record lows, sales are soaring, and new trade deals are in progress, signaling a significant shift in the global cherry market landscape.
18 Jan 2024
Supplies have decreased, explains Evan Myers, CEO of Forever Fresh. Chile has shipped about 3.3 million crates to the US. So far, about 1.8 million crates have arrived and the total projection for this season is about 2.3 million.
31 Jul 2026
An open-source, low-cost dendrometer system tracks trunk growth, water stress and irrigation needs in apple, sour cherry and peach orchards. Built on Arduino, it supports precise, sustainable water management and makes plant monitoring more accessible at commercial scale.
31 Jul 2026
Poland’s cherry season is delivering barely 50% of the 2025 record crop. Frost, drought, extreme heat and heavy imports are squeezing prices and sales, while growers rely on cold storage, premium quality and pick-your-own events to protect margins in a brutal market.
