UCMH 59

UCMH 59

Mahaleb rootstock named ‘UCMH 59’

PUBLIC DOMAIN

Patent expired January 28, 2022. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on December 28, 2021. This patent earned 31 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP14359, the photograph of UCMH 59 printed in the patent.

Figure 1 from US Plant Patent PP14359, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

Abstract

A new and distinct cultivar of Prunus mahaleb is provided. The new cultivar is particularly well suited for serving as an understock during cherry production. A number of advantages are provided when compared to the standard Mahaleb rootstock. The cultivar is readily amenable to vegetative propagation (e.g., by the use of softwood cuttings), and exhibits some improved resistance to Phytophthora spp. When used with a 'Bing' cherry scion, increased yields and yield efficiency have been observed without reduced fruit size. Improved precocity in bearing is displayed when compared to the standard Mahaleb rootstock. The new cultivar when grown without use as an understock forms a larger and more vigorous tree than the 'UCMH 55' and 'UCMH 56' cultivars that were products of the same research program. When used as a rootstock, the new cultivar produces a compact tree with a size reduction of approximately 20 to 25 percent compared to that produced when using a standard Mahaleb rootstock. Few suckers are produced.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

I claim: 1. A new and distinct cultivar of Prunus mahaleb plant that exhibits the following combination of characteristics: (a) readily is amenable to vegetative propagation, (b) performs well as an understock for cherry production, (c) forms a larger and more vigorous tree than the ‘UCMH 55’ cultivar and the ‘UCMH 56’ cultivar, (d) when used as understock produces a compact tree with a size reduction of approximately 20 to 25 percent, (e) displays improved resistance to Phytophthora spp., (f) makes possible increased ‘Bing’ sweet cherry scion yield and yield efficiency without reduced fruit size when compared to the standard Mahaleb rootstock, (g) demonstrates improved precocity in bearing when compared to the standard Mahaleb rootstock, and (h) produces few suckers; substantially as illustrated and described.

Read the full patent: US Plant Patent PP14359 in full — the complete specification, every figure, and the file history.

The record

Abstract