Cotinus Cultivar Breeding for Dark Purple Foliage and Upright Growth

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Solution Overview

Problem

Existing Cotinus cultivars lack dark color foliage and desirable growth habits, necessitating the development of a cultivar with improved foliage color and growth characteristics.

Innovation Solution

The development of the 'Kolmagipur' cultivar, resulting from a cross between 'Royal Purple' and 'Young Lady', exhibits dark purple foliage, straight branches, and abundant stems, achieved through asexual propagation by stem cuttings and tissue culture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If existing Cotinus cultivars are used, then they have established growth habits, but they lack dark color foliage

Engineering Contradiction:

Improvefoliage color darknessVSAvoidgrowth habit suitability

Core Design Contradiction:

TemperatureVSAdaptability or versatility

Solution Approach 1:

The patent combines two existing Cotinus cultivars ('Royal Purple' for dark foliage color and 'Young Lady' for desirable growth habits) through controlled hybridization to create a new cultivar that simultaneously exhibits both dark purple foliage and upright growth habits with abundant stems

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The breeding program selectively targets specific traits from each parent cultivar - dark foliage color from the female parent and upright growth habit from the male parent - to create a new cultivar with localized improvement in both characteristics

Inventive Principle:

Principle #3Local quality

2Temperature

If a cross between 'Royal Purple' and 'Young Lady' is made, then dark purple foliage is achieved, but breeding time and complexity increase

Engineering Contradiction:

Improvefoliage colorVSAvoidbreeding duration

Core Design Contradiction:

TemperatureVSLoss of time

Solution Approach 1:

The patent performs preliminary selection of parent cultivars with complementary traits before crossing, and conducts systematic evaluation of seedlings at specific developmental stages (July selection, August propagation) to accelerate the breeding process and reduce overall development time

Inventive Principle:

Principle #10Preliminary action

3Stability of the object's composition

If stem cuttings are used for propagation, then true-to-type characteristics are maintained, but propagation time increases

Engineering Contradiction:

Improvecharacteristic stabilityVSAvoidpropagation time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent uses stem cuttings to create genetic copies of the selected plant, ensuring that the new propagules are identical clones of the parent with the same dark purple foliage and upright growth habits, thereby maintaining genetic stability while enabling rapid multiplication

Inventive Principle:

Principle #26Copying

Data Source

PatentUSPP37209P3<i>Cotinus </i>plant named ‘Kolmagipur’

Publication Date: 2026.01.13 KOLSTER HLDG BV

AI summary

A new cultivar of Cotinus plant named ‘Kolmagipur’ that is characterized by its dark purple colored foliage, its straight and strong branches, its abundance of stems, and its small sized leaves.