Dahlia Karma Choc Breeding for Cut Flower Traits

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Solution Overview

Problem

Current Dahlia cultivars lack a combination of freely flowering habit, decorative inflorescence form, attractive ray floret coloration, and good post-production longevity, which are essential for cut flower markets.

Innovation Solution

The Dahlia hybrida cultivar 'Karma Choc' is developed through controlled breeding, exhibiting an upright and spreading plant habit, dark-colored foliage, large inflorescences with dark purple ray florets, and improved garden performance and longevity, distinguishing it from its parent cultivars.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional Dahlia cultivars are used, then basic flowering is achieved, but they lack freely flowering habit and decorative inflorescence form

Engineering Contradiction:

Improveflowering habitVSAvoidinflorescence form

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The patent merges desirable traits from multiple parent cultivars (VD1-41 and Karma Naomi) to create a composite cultivar that exhibits both freely flowering habit and decorative inflorescence form simultaneously, resolving the contradiction between productivity and shape

Inventive Principle:

Principle #5Merging (Combining)

2Shape

If ray floret coloration is made attractive, then market appeal is improved, but postproduction longevity may be compromised

Engineering Contradiction:

Improveray floret colorationVSAvoidpostproduction longevity

Core Design Contradiction:

ShapeVSDuration of action of stationary object

Solution Approach 1:

The patent optimizes the color parameters of ray florets to achieve attractive dark purple coloration while maintaining postproduction longevity through controlled breeding, resolving the contradiction between aesthetic appearance and duration

Inventive Principle:

Principle #35Parameter changes

3Volume of moving object

If plant size is increased for larger inflorescences, then decorative quality is improved, but garden performance may be compromised

Engineering Contradiction:

Improveinflorescence sizeVSAvoidgarden performance

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent applies local quality by concentrating resources toward inflorescence development while maintaining overall plant health and garden performance, allowing large decorative inflorescences without compromising reliability

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP18422P2Dahlia plant named 'Karma Choc'

Publication Date: 2008.01.15 SYNGENTA CROP PROTECITON AG

AI summary

A new and distinct cultivar of Dahlia plant named ‘Karma Choc’, characterized by its upright and somewhat outwardly spreading plant habit; freely branching habit; dark-colored foliage; decorative-type inflorescence form; large inflorescences with dark purple-colored ray florets; and good garden performance and postproduction longevity.