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)
12 Apr 2024
"Cherries are scarce from week 12 to week 17, during which they are not available worldwide," says Lucien Ruiter of Van Ooijen Citrus in Ridderkerk. "Greenhouse cherries from our Spanish supplier fill this gap."
30 Oct 2024
"Most traditional cherries need a minimum of 800 hours of chilling, but our low-chilling varieties can produce fruit with less than half of those hours. This opens up cultivation opportunities in areas with milder winters."
10 Jun 2026
Orchard View is preparing its 2026 cherry season in Oregon with strong volumes, premium quality and an early crop. The Pacific Northwest program targets July 4 to support retail sales, US promotions and exports to Asia in an increasingly competitive global market.
10 Jun 2026
In Washington State, extreme heat, rainfall and temperature swings are affecting cherry firmness, stem condition and postharvest disorders. Data from 2021-2023 highlight different responses in Rainier, Bing, Skeena and Sweetheart cherries, with impacts on storage and markets.
