Clematis Donahros Hybrid Repeat Blooming and Disease Resistance

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Solution Overview

Problem

Current Clematis cultivars lack a heavy blooming habit and disease resistance, with limited color variation and shorter blooming periods, making them less desirable for landscaping and cut flower applications.

Innovation Solution

The development of the 'Donahros' cultivar, a hybrid Clematis with dark pink fading flowers, burgundy anthers, and dark green foliage, exhibiting a vigorous growth habit, repeat blooming in June and August, and resistance to diseases, achieved through asexual propagation from 'Pink Fantasy' and 'Kilian Donahue' parents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional Clematis cultivars are used, then they can be grown for landscaping, but they lack heavy blooming habits and have shorter blooming periods

Engineering Contradiction:

Improveblooming habit intensityVSAvoidblooming period duration

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The patent applies parameter changes by developing a hybrid cultivar with modified genetic parameters that extend the blooming period from the typical single season to repeat blooming across multiple seasons (June-July and August-October), thereby simultaneously increasing both blooming intensity and duration

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The cultivar 'Donahros' represents a composite genetic material resulting from hybridization between Clematis 'Pink Fantasy' and Clematis 'Kilian Donahue', combining desirable traits from both parents to achieve heavy repeat blooming habits that neither parent exhibits alone

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If conventional Clematis cultivars are used, then they can be grown for landscaping, but they have limited color variation

Engineering Contradiction:

Improvecolor variationVSAvoidlandscaping desirability

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent applies local quality by developing distinct color variations in specific plant parts - dark pink flowers that fade to lighter pink, burgundy anthers, and dark green foliage - creating visual interest through color differentiation within the same plant

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The cultivar exhibits color changes over time, with flowers emerging as dark pink and fading to many shades of pink, providing dynamic visual interest that enhances landscaping versatility

Inventive Principle:

Principle #32Color changes

3Reliability

If conventional Clematis cultivars are used, then they can be grown for landscaping, but they lack disease resistance

Engineering Contradiction:

Improvedisease resistanceVSAvoidlandscaping desirability

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent converts the potential harm of disease susceptibility into benefit by selecting parent plants with desirable disease resistance traits and combining them through hybridization, so that the resulting cultivar 'Donahros' inherits enhanced disease resistance that improves its reliability for landscaping use

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

4Stability of the object's composition

If conventional Clematis cultivars are used, then they can be propagated, but asexual propagation does not consistently reproduce true-to-type characteristics

Engineering Contradiction:

Improvecharacteristic stabilityVSAvoidpropagation reliability

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent applies copying through asexual propagation by rooted cuttings, where the cultivar 'Donahros' is propagated to create identical copies that reproduce true-to-type characteristics, ensuring genetic stability across successive generations

Inventive Principle:

Principle #26Copying

Data Source

PatentUSPP29554P2<i>Clematis </i>plant named ‘Donahros’

Publication Date: 2018.07.31 DONAHUES GREENHOUSES INC

AI summary

A new cultivar of hybrid Clematis, ‘Donahros’, that is characterized by its flowers with six petals that emerge dark pink in color and fade to many shades of pink, its anthers that are burgundy in color, its dark green foliage, and its floriferous repeat bloom period beginning in June and then again in late August.