Table 1.
Breeding cycle times for several breeding schemes.
| Line development scheme | Testing scheme |
||
|---|---|---|---|
| Conventional 3-year replicated phenotyping before use of new lines as parents | Accelerated 2-year replicated phenotyping before use of new lines as parents | Single-year phenotyping plus genomic selection | |
| Total breeding cycle time (years) assuming lines are inbred to F6 generation (or complete homozygosity for doubled haploid systems) | |||
| Pedigree, no off-season nursery | 10 | 9 | 8 |
| Pedigree with off-season nursery | 7 | 6 | 5 |
| Single-seed descent in controlled environment | 6 | 5 | 4 |
| Doubled haploid | 5 | 4 | 3 |