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)
16 May 2023
With global demand on the rise and exports increasing, the challenges for the cherry sector are getting tougher. Packaging centres are under pressure as they have to handle higher volumes and have to maintain or improve quality.
30 Nov 2023
After obtaining unanimous approval from INIA's Regional Committee for the Release of New Varieties, S-21 will go through the registration process with the Chilean Agriculture and Livestock Service next year to become a commercial variety.
08 Dec 2023
Carolina Torres presented the results of three years of field trials comparing different preservation methods for different cultivars (Bing, Sweetheart, Skeena, Rainier) when the aim is precisely to preserve cherries for 30 days + 4.
07 Dec 2023
ANA Chile had sold about 700,000 cherry plants, more than half of which were Sweet Aryana, which would be equivalent to about 350 hectares, considering about 1,200 plants per hectare. The Pacific Red variety follows: ANA Chile sold 131,000 plants of this variety in 2023.
