CURRENT_F7 |
Current scheme, selecting parents at PYT_F7 (20), VEF_F8 (5), OF_F9 (10) using a base index. |
SSD_F6 |
Scheme selecting parents at PYT_F6 (20), VEF_F7 (5), OF_F8 (10) using a base index. |
SSD_F5 |
Scheme selecting parents at PYT_F5 (20), VEF_F6 (5), OF_F7 (10) using a base index. |
SSD_F5_FAMILY |
Scheme selecting parents at PYT_F5 (20), VEF_F6 (5), OF_F7 (10) + top 20% families are selected at F2 using a base index (not parents). |
SSD_F8 |
Scheme selecting parents at PYT_F8 (20), VEF_F9 (5), OF_F10 (10) |
A 20 year burn-in period was modeled using the current breeding scheme. The burn-in was followed by a 50 year evaluation period to measure rates of genetic gain for all treatments. Genetic gain was measured by assessing changes in genetic merit in F9 lines. Genotype-by-year interaction variance was assumed to be equivalent to genetic variance (based on average correlation between locations being equal to 0.5). 20 replications done. We simulated 5 complex and 3 simple traits to be behind the genetic merit.