6-Benzylaminopurine (6-BA) is a synthetic cytokinin-like plant growth regulator that promotes cell division, delays leaf senescence, and induces lateral bud sprouting. It has applications in grape bud development.
In grapes, 6-BA is commonly used to promote bud sprouting and improve fruit set. Specific application methods include:
Bud-promoting treatment: Before grape buds sprout, spray the branches or apply a 100-200 mg/L 6-BA solution to the buds to break dormancy and promote uniform bud sprouting.
Using in combination with gibberellin: Combining 6-BA with gibberellin can enhance the effect. For example, dipping the inflorescence before flowering can improve fruit set and form seedless fruit.
Precautions: The concentration should not be too high to avoid phytotoxicity or deformed fruit; for example, when using a 2% aqueous solution, the dilution ratio must be strictly controlled. When spraying, the buds should be evenly covered to avoid repeated treatment and reduce side effects.
