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)
06 Jun 2024
The aim of this renewal is to adapt the visual identity of the PDO to an increasingly digital world. The Regulatory Council renews the corporate image by launching a new logo, representing both cherries and PDO picotas.
27 May 2025
Hungary’s 2025 cherry harvest faces its worst collapse in decades after April frosts damaged 90% of orchards. With crop losses exceeding 80% and a sector already struggling with outdated methods and labor shortages, the country risks a major setback in cherry production.
12 Jun 2026
The Government of Aragón supports the Cereza de Calatayud y del Aranda PGI, covering around 1,500 hectares and about one hundred agricultural operators. Documents must be ready by 30 July, while the European recognition process could take up to two years for its approval.
12 Jun 2026
Viveros Ebro outlines its 2026 cherry strategy in Ribera d’Ebre, Spain, with Nipama, SPC-108, Royal Apache and SMS-416. High yields, large fruit size, low chill requirements, postharvest quality and full-cycle technical support shape the new season with climate resilience.
