6-Benzylaminopurine is a synthetic cytokinin that promotes cell division and nutrient accumulation in underground root and tuber crops by regulating plant physiological processes, thereby increasing yield and improving quality.
The mechanism by which 6-Benzylaminopurine promotes cell division in underground root and tuber crops mainly involves activating the expression of cell division-related genes and accelerating the proliferation of meristematic cells. In underground root and tuber crops such as potatoes and yams, 6-BA can significantly increase the number of cells in tubers or rhizomes. For example, when used in combination with Forchlorfenuron (CPPU), it can increase the number of potato tuber cells by 25%-30% and simultaneously increase the longitudinal growth rate of yam rhizomes by 20%-25%.
Its mechanism of action includes inducing the differentiation of undifferentiated tissues and promoting bud formation, thereby stimulating the development of underground organs.
Regarding nutrient accumulation, 6-Benzylaminopurine enhances the synthesis of substances such as starch by regulating the transport and distribution of photosynthetic products. It promotes the translocation of amino acids and sugars to the root system. For example, in sweet potatoes, it can increase the proportion of photosynthetic products allocated to the tubers to over 70%, increasing the weight of individual tubers by 18%-22%. Simultaneously, through the combination of chelated potassium and calcium, it activates the activity of starch synthase (SS) and sucrose synthase (SPS), increasing the starch content of garlic bulbs by 15%-20%.
Application Timing: For underground root crops (such as potatoes and ginger), it is advisable to spray during the late tillering stage or early tuber enlargement stage to promote cell division and nutrient accumulation.
Concentration Control: The recommended concentration is 5-8 g/L (i.e., 5000-8000 mg/L). Excessive concentrations should be avoided to prevent excessive vegetative growth or deformities.
