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Mean cross‐sectional area at the base of 3‐year‐old branches for different rootstock/interstock combinations
| Rootstock/interstock | MM.106/– | MM.106/MM.106 | MM.106/M.9 | M.9/MM.106 | M.9/– | M.9/M.9 |
| Area (cm2) | 5·0ab | 6·3a | 3·4bc | 3·5bc | 2·6c | 2·2c |
Superscript letters indicate significant differences at P < 0·05.
