§ 2 Breeding Methods 育种方法 1. Selection Breeding 2. Cross Breeding 3. Backcross breeding 4. Heterosis Breeding 5. Mutation Breeding 6. Biotechnological Breeding QTL, MAS§2 Breeding Methods 育种方法 1. Selection Breeding 2. Cross Breeding 3. Backcross Breeding 4. Heterosis Breeding 5. Mutation Breeding 6. Biotechnological Breeding QTL, MAS, … …