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)
23 Oct 2024
US research has identified molecular markers for size by studying cvs obtained at WSU. Researchers have developed DNA tests for these markers that can now be used in breeding for assisted early selection.
21 Oct 2024
A hydroponic cherry grower in Hungary collaborated with Gremon Systems to find solutions to prevent fruit cracking. With the help of dendrometers, which measure stem diameter, the grower gained deeper insights into controlling osmotic pressure to reduce cherry cracking.
08 Oct 2026
In eastern Gansu, China, a study on sweet cherry compares Apis mellifera and Apis cerana. Flower visits, pollen distribution, abundance and daily activity reveal complementary roles that may strengthen pollination services and resilience across commercial cherry orchards.
08 Oct 2026
Climate change is putting Italian cherries under pressure: in Puglia, production and yields are falling while prices remain high. Frost, heavy rain and rising costs are increasing volatility across the supply chain and weighing on both growers and consumers in Italy.
