US Plant Patent PP11403
M40
Marianna plum rootstock variety named `M40`
PUBLIC DOMAIN
Patent expired July 13, 2018. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.
The record
- Patent number
- PP11403
- Filed
- July 13, 1998
- Granted
- June 6, 2000
- Expires
- July 13, 2018
- Assignee
- UNIV CALIFORNIA
- Inventor
- DOYLE JAMES F; FENTON ROBERT E; HESSE CLARON O
Abstract
A new and distinct cultivar of Marianna rootstock that originated as an open-pollinated seedling is provided. The new cultivar is particularly well suited for use as prune rootstock. When compared to the previously utilized Marianna `2624` cultivar, it is found that the new cultivar exhibits superior root anchorage and a significantly reduced tendency to form unwanted suckers. Also, the new cultivar when compared per se to the Marianna `2624` cultivar is found to set considerably more fruit, to form smaller fruit, and to possess a pit that is considerably smaller. Good wet soil tolerance is exhibited. The new cultivar propagates well by the use of cuttings.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct cultivar of Marianna plum which exhibits the following combination of characteristics: (a) superior rooting anchorage when compared to the Marianna `2624` cultivar (non-patented in the United States), (b) a substantially lesser propensity to form suckers than the Marianna `2624` cultivar, and (c) the ability to well serve as a prune rootstock;
Read the full patent: US Plant Patent PP11403 in full — the complete specification, every figure, and the file history.