Sweet cherries are self-incompatible and cannot be fertilized by their own pollen. A gametophytic self-incompatibility (GSI) system determines fertility in sweet cherries and prevents pollination with own and genetically related pollen.
This mechanism is controlled by a multi-allelic S-locus coding for two genes involved in fertilization: the S-allele-specific ribonuclease (S-RNase) expressed in the female style and the S-specific F-box protein (SFB) in the male pollen. Since the beginning of the 20th century, systematic studies have been carried out to describe the fertilization relationships between sweet cherry cultivars.
Since then, information on the S-genotypes of sweet cherry cultivars has been constantly increasing. This information is very important for cherry growing, breeding, and breeding research. The S-genotypes of sweet cherry cultivars were collected by evaluating S-allele studies described in the literature. The S-genotypes of 1,700 sweet cherry accessions were recorded.
A summary of all the results of S-genotyping in sweet cherries can be found in "Self-incompatibility (S) genotypes of cultivated sweet cherries – An overview 2023-Update" published in the OpenAgrar repository, https://doi.org/10.5073/20230302-143854-0
Mirko Schuster, Susan Schröpfer, Henryk Flachowsky
Institute for Breeding Research on Fruit Crops, Julius Kühn-Institut (DE)
16 Nov 2023
Brux stated that Chile could reach 140 million crates by 2025/26. China, Chile's main market, absorbs 89% of the total harvest. US exports are also growing, with volumes rising from 1.4 (2020/21) to 3.6 million in 2022/23.
05 Jun 2025
In Niagara County, Tim Buhr grows sweet cherries with high-density systems, VOEN covers and Cornell varieties. Thanks to Gisela rootstocks and targeted agronomic practices, he faces New York’s humid climate focusing on fruit quality, high yields and local market demand.
11 Mar 2026
A study from Chile validates an absolute qPCR assay targeting the syrB gene to quantify Pseudomonas syringae pv. syringae in sweet cherry tissues. The method improves detection of bacterial canker compared with culture techniques and supports more precise disease management.
11 Mar 2026
Chile’s cherry sector is facing a turning point after years of expansion. Rising production and a surplus of fruit in the Chinese market are putting strong pressure on prices, forcing growers and exporters to adapt to a more competitive and less profitable environment.
