Ulmus Crassifolia Cultivar With Red Foliage and Narrow Canopy

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Solution Overview

Problem

There is a need for a new cultivar of Ulmus crassifolia that exhibits distinct characteristics such as red emerging foliage, greyed-purple new growth, upright and narrow canopy, and fast growth rate, which are not present in existing varieties, to enhance horticultural diversity and potentially improve landscape aesthetics.

Innovation Solution

The development of the Ulmus crassifolia cultivar 'UCMTF', which is genetically stable and can be reproduced through asexual propagation, showcasing unique traits like dark green mature foliage, red emerging foliage, greyed-purple new growth, upright and narrow canopy, and fast growth rate, differentiated from other Ulmus crassifolia varieties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a new Ulmus crassifolia cultivar is developed with distinct characteristics (red emerging foliage, greyed-purple new growth, upright narrow canopy), then horticultural diversity and landscape aesthetics are enhanced, but the complexity of breeding and selecting stable genetic traits increases

Engineering Contradiction:

Improvehorticultural diversityVSAvoidbreeding complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses asexual propagation (grafting) to create exact genetic copies of the selected mutant tree, ensuring that the unique combination of traits (red emerging foliage, greyed-purple new growth, upright narrow canopy) is consistently reproduced without the need for repeated complex breeding cycles

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The invention exploits natural genetic mutations that occurred in the seedling population, selecting for specific phenotypic parameters (foliage color, growth habit, canopy shape) that differ from the parent 'Everalan' cultivar, thereby creating a new distinct variety through parameter variation rather than complex engineered modification

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If asexual propagation is used to reproduce the new cultivar, then genetic stability and consistent trait reproduction are achieved, but the propagation process requires controlled environmental conditions and extended time periods

Engineering Contradiction:

Improvegenetic stabilityVSAvoidpropagation time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent employs preliminary hardening-off procedures where grafted shoots are gradually acclimated to outdoor conditions before final planting, and uses protective structures like cloches and row covers to establish plants ahead of time, reducing the overall time to marketable product

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention uses intermediate propagation structures such as grafting onto rootstock, employing humidity chambers for initial root development, and using protective coverings during acclimation, which facilitate faster and more reliable propagation compared to direct seeding while maintaining genetic stability

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUSPP37271P2<i>Ulmus </i>tree named ‘UCMTF’

Publication Date: 2026.02.17 MOON DWAYNE

AI summary

A new and distinct cultivar of Ulmus crassifolia tree named ‘UCMTF’ is disclosed, characterized by distinctive red emerging foliage, turning dark green with maturity. New growth is uniquely greyed-purple. The canopy of the tree is upright and narrow. The new variety is a Ulmus tree, typically used for landscapes and gardens.