| Cultivar Name: |
M-40
|
| Type |
Plum Rootstock |
| Patent |
Regents of The University Of California 2000 PP11403
|
| Parentage |
(P. cerasifera x P. munsoniana) cv. Marianna OP
|
| Species |
P. cerasifera x P. munsoniana
|
| Usage |
Rootstock
|
| Soil Adaptation |
Best in heavy soils, tolerant to wet soils
|
| Resistance Traits |
Phytophthora Resistance, fair; Bacterial Canker Resistance, low to moderate; Crown Gall Resistance, good; Root Knot Nematode Resistance, high
|
| Graft Compatibility |
Apricot, Almond, Plum, "Prune"
|
| Propagation Method |
Vegetative
|
| Anchorage |
Good
|
| Suckering |
Low
|
| Description |
Invented by James F. Doyle, Robert E. Fenton and Claron O. Hesse. M-40 is a cultivar of Marianna rootstock that originated as an open-pollinated seedling. This cultivar is particularly well suited for use as prune rootstock. It exhibits superior rooting depth relative to Marianna 2624, fewer unwanted suckers, and is compatible with many prunes, apricots, and Japanese plums. Its almond compatibility is similar to Marianna 2624. Good wet soil tolerance. When comparing to Marianna 2624, M-40 is found to set considerably more fruit, to form smaller fruit, and to possess a pit that is considerably smaller. M-40 also has possible resistance to bacterial canker. |
| References |
- Google Patents.
- Fowler Nursery, Rootstocks; Link
- 2015 Field Evaluations of Prune Rootstocks; California Dried Plum Board: Link
|
No photos for this cultivar.
|
