M.27 (3431) apple rootstock
This information forms part of Agfact H4.1.10 Apple rootstock identification.
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M.27 branch |
M.27 leaf |
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| Origin | East Malling and John Innes, England. Patented in Australia. M.13 × M.9 (1929). |
| Description | Leaf: medium, shiny, upfolded with wavy edge, petiole short with red base. Shape: round to ovate, tip mucronate, base truncate. Margin: serrate to incised. Stipules: very small, almost indistinct. Shoot: short, with whippy tip. |
| Vigour | Very dwarf, about half size of M.9. |
| Propagation | Stooling and cuttings difficult, similar to M.9. |
| Resistance | Collar rot resistant. Susceptible to woolly aphid and fireblight. |
| Uses | Rarely suckers, anchorage poor, so must have support; may be used as an interstem. Does not have much direct planting application for Australian orchards except for some very vigorous triploid varieties (Mutsu, Jonagold) on very fertile soils. |