Figure 4. Expected total genetic advance at the level of variety development (VD) from DHT-RS versus S₀T-RS. Predicted results for S₀T-RS in 2 yr + 3 yr for VD are the same as for DHT-RS in 4 yr and one year more for VD. For the computation we have considered constraints given in Table 3, and h_S0²= 0.50. Lines for DHT 4 yr + VD one year and S₀T 2 yr + VD 3 yr are the same.