Fig. 4

The Changes of berry firmness, berry shape index and expressions of candidate genes during grape berry development in ‘Moldova’ and ‘Ruidu Xiangyu’. a Expressions of three filtered candidate genes for berry firmness. b Expressions of three candidate genes for berry shape. Stage A: (young pea-size berries); Stage B: veraison (berries turning red or soft); Stage C: fully ripening stage (°Brix ≥18)