Method for creating new germplasm of yellow-flesh crack-resistant high-sugar mini watermelons

The invention discloses a method for creating a yellow-flesh crack-resistant high-sugar mini watermelon new germplasm, which comprises the following steps of: hybridizing a female parent and a male parent with specific characters, and performing disease-resistant molecular marking, skin toughness selection, sugar degree measurement and the like to obtain the yellow-flesh crack-resistant high-sugar mini watermelon new germplasm. Carrying out seedling raising and field planting on the F2 generation after selfing of the F1 generation, selecting specific single watermelons from the F2 generation, hybridizing to obtain an F3 generation, selfing from the F4 generation to the F6 generation, screening pure seeds, and finally screening a purified yellow-flesh crack-resistant high-sugar mini watermelon new germplasm material from the F6 generation. The purified yellow-flesh crack-resistant high-sugar mini watermelons screened by the method are stable in growth vigor, high in fusarium wilt resistance, relatively high in