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)
03 Jun 2025
With zero import tariffs, ideal seasonal windows, and a growing middle class of 300 million consumers, India represents a major opportunity for Chilean cherries. As logistics improve and awareness increases, it could become Chile’s next key market for premium fruit exports.
04 Sep 2024
As part of the Cherry Day, which took place on August 28 and 29 in Plottier (Neuquén), Chilean specialists demonstrated knowledge and experience related to the global cherry business.
30 Jun 2025
In Lebanon, cherry farmers and agri-SMEs from the Bekaa Valley and Mount Lebanon are receiving ILO-supported training to meet EU compliance standards. The initiative aims to boost certification, strengthen value chains, and improve access to international export markets.
30 Jun 2025
Jealous Fruits forecasts an excellent 2025 cherry season in British Columbia: harvest begins in July with premium varieties like Regina, Sovereign, and Kordia. A 30–35% increase in late-season production is expected thanks to ideal growing conditions throughout the season.
