Table 1 Phase 2 trial component costs for a single candidate standardized to the current design, total standardized Phase 2 trial cost and the total number of candidates that could be evaluated for the current total WSU apple breeding program cost for the current Phase 2 trial design and alternative trial designs
From: Cost and accuracy of advanced breeding trial designs in apple
Current: 3 Locations, 3 Years, 3 Harvests | 2 Locations , 3 Years, 3 Harvests | 3 Locations, 2 Years, 3 Harvests | 3 Locations, 3 Years, 1 Ha rvest | 3 Locations, 3 Years, 2 H arvest | 3 Locations, 2 Years, 2 Harvests | 2 Locations , 3 Years, 2 Harvests | 2 Locations, 2 Years, 3 Harvests | 2 Locations, 2 Years, 2 Harvest s | |
|---|---|---|---|---|---|---|---|---|---|
Nursery production of trees | 7.0 | 4.7 | 7.0 | 7.0 | 7.0 | 7.0 | 4.7 | 4.7 | 4.7 |
Field establishmenta | 12.9 | 8.6 | 12.9 | 12.9 | 12.9 | 12.9 | 8.6 | 8.6 | 8.6 |
Field maintenanceb | 5.7 | 3.8 | 4.3 | 5.7 | 5.7 | 4.3 | 3.8 | 2.9 | 2.9 |
Candidate assessment | |||||||||
Drivingc | 50.7 | 33.8 | 33.8 | 50.7 | 50.7 | 33.8 | 33.8 | 22.5 | 22.5 |
Harvest | 6.7 | 4.5 | 4.5 | 4.2 | 5.5 | 3.6 | 3.6 | 2.9 | 2.4 |
Data entry | 1.6 | 1.1 | 1.1 | 0.5 | 1.1 | 0.7 | 0.7 | 0.7 | 0.5 |
Consumablesd | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 |
Data collection | |||||||||
Tree diameter | 0.4 | 0.2 | 0.2 | 0.4 | 0.4 | 0.2 | 0.2 | 0.2 | 0.2 |
Sensory analysis | 10.1 | 6.7 | 6.7 | 3.4 | 6.7 | 4.5 | 4.5 | 4.5 | 3.0 |
Instrumental analysis | 4.8 | 3.2 | 3.2 | 1.6 | 3.2 | 2.2 | 2.2 | 2.2 | 1.4 |
Total cost (units) per candidate | 100.0 | 66.7 | 73.8 | 86.5 | 93.3 | 69.3 | 62.2 | 49.2 | 46.2 |
Total program cost (unit cost per candidate x 0 candidates) | 1000 | 667 | 738 | 865 | 933 | 693 | 622 | 492 | 462 |
Total candidates that could be evaluated for 1000 units | 10 | 15 | 14 | 12 | 11 | 14 | 16 | 20 | 22 |
