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Efficiency of thermotherapy combined with meristem culture on generation of virus free apple shoots of ‘Oregon Spur-II’
| eat treatment | Size of meristems (mm) | Efficiency of generating virus free plants | |||
|---|---|---|---|---|---|
| ACLSV | ApMV | ASGV | ASPV | ||
| 37–40 °C for 4 weeks. | 0.3–0.4 | 1/1 | 1/1 | 2/2 | 2/2 |
| 0.4–0.5 | 1/1 | 2/2 | 3/3 | 3/3 | |
| 0.5–0.6 | 1/2 | 1/1 | 3/3 | 3/3 | |
| 0.6–0.7 | 0/3 | 1/2 | 2/5 | 3/5 | |
