US Plant Patent PP5652
Discovered and asexually reproduced a certain new and distinct variety of asparagus plant
PUBLIC DOMAIN
Patent expired October 21, 2003. 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
- PP5652
- Filed
- October 21, 1983
- Granted
- January 28, 1986
- Expires
- October 21, 2003
- Assignee
- UNIV RUTGERS
- Inventor
- ELLISON J HOWARD; KINELSKI JOHN J
No cultivar name of record
This patent does not name the plant. Through the 1980s and early 1990s that was still common: naming every new cultivar only became standard practice as plants began to be marketed under brand names. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
A female asparagus plant denoted No. 56 and "Donna" developed in a program of extensive growth and selection, in turn selected from a field of the variety Mary Washington, because of its vigorous plant growth and ability to transmit disease resistance including resistance to rust (Puccinia asparagi) good field tolerance to root rot (Fusarium oxysporum) and crown rot (F. moniliforme) increasing production, the plant having the characteristics of a largest stalk of 31 mm diameter, number of stalks 24, and stalk vigor index (Number X (Mean diameter) 2 ) of 21,313.
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 variety of Asparagus Plant as herein shown and described, distinguished particularly as to novelty by its unique combination as a female plant which transmits high yield, resistance to rust (Puccinia asparagi) good field tolerance to root and crown rot (Fusarium oxysporum) and (F. moniliforme) provides a vigorous plant having an average of 24 stalks of mean diameter (three largest stalks) of 29.8 mm, and a stalk vigor index (Number×(Mean diameter) 2 ) of 21,313.
Read the full patent: US Plant Patent PP5652 in full — the complete specification, every figure, and the file history.