Grafting is a commonly used practice in horticulture, mainly employed to manage plant growth, increase fruit yield and quality, and improve plant resistance to biotic and abiotic challenges. Indeed, the use of the Gisela 6 rootstock, which is recognised for its greater dwarfing characteristics than commonly used rootstocks in China, facilitates the achievement of higher crop yields.
This can be attributed to the greater abundance of flower buds, which consequently results in a higher fruit load. Researchers at the Beijing Academy of Agriculture and Forestry Sciences (China) analysed gene expression as a function of the rootstock adopted.
Xuwei Duan
For this study, the Tieton/Landing 2 and Tieton/Gisela 6 combinations were used by analysing 4-year-old plants. Thanks to this study, the PaMYBF gene was identified and at the same time it was noted that the expression of PaMYBF was significantly higher in the phloem tissue of the scion when grafted onto the Gisela 6 rootstock.
Preliminary results confirmed the correlation between the expression of this particular gene and the flowering process. Transcriptome analysis revealed considerable variations in the expression patterns of hormone-associated genes in the various rootstock and scion combinations.
In this study, it was also found that the expression of the PaMYBF gene can be increased by the exogenous application of phytohormones such as jasmonates. The repercussions of this increased gene expression are expected to have a favourable effect on the number of flowering buds, but targeted studies need to be continued to better understand this phenomenon.
Source: Xuwei Duan, Rootstock induced PaMYBF participating floral bud formation in sweet cherry, IX International Cherry Simposium, https://2021.cherries.org.cn/replayEn.html
Images: IX International Cherry Simposium
Melissa Venturi
University of Bologna (IT)
09 Feb 2026
Sweet cherry nutrition management in Chile is crucial for reserve accumulation supporting spring growth. Post-harvest applications of nitrogen, potassium, calcium and micronutrients enhance photosynthesis, tree vigor, fruit set and overall fruit quality.
29 Jan 2025
Jorge Schmidt, a farmer from the region who has observed the area’s potential and agricultural development, states that “in Aconcagua and its surroundings, there are climatic conditions that allow for very early harvests, ensuring better prices.”
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.
