The invention relates to the technical field of fruit quality improvement, in particular to application of
hyperoside in improvement of grape fruit
hardness. According to the scheme provided by the invention, a large number of field trials verify that after the
hyperoside solution is sprayed to plants, the fruit
hardness of the four grape varieties of 'Red double
flavor', 'Rosa
rugosa', 'Sunshine Rosa' and 'Italian' is remarkably improved compared with that of a control group, the
hardness of the 'Red double
flavor' and the 'Rosa
rugosa' is greatly improved, the hardness is improved by about 20%-25% in the grape mature period, and the fruit hardness is improved by about 20%-25% in the grape mature period. The hardness of 'Sunrose' and 'Italian' is relatively slightly improved, and the fruit hardness is improved by about 8-16% in the color-changing
softening period of grapes; besides, the fruit hardness is improved, and by spraying the
hyperoside solution, the color uniformity of partial varieties of grape fruits can be promoted, the soluble
solid content is improved, the titratable
acid content is reduced, and the
fruit flavor is better; the method has good compatibility with conventional grape planting management measures, is easy to popularize and apply in grape planting production areas, and can bring remarkable
economic benefits to vast farmer households.