Fig. 1

Apparent difference of branches (a), leaves (b), fruits (c), average internode length (d), single leaf area (e) and single fruit weight (f) in ‘Red Delicious’ and its four generation mutants. The figures from left to right are ‘Red Delicious’ (G0), ‘Starking red’ (G1), ‘Starkrimson’ (G2), ‘Campbell Redchief’ (G3), ‘Vallee spur’ (G4). Fifteen trees of each generation were chose to collect branches, leaves and fruit. A replicate contains five fruit trees, and set three independent biological replicates. The values of three independent experiments were expressed as the average ± SE. Different small letters within the indicate significant differences at p < 0.05