Dahlia BKDAMDR Cultivar Breeding for Compact Growth and Large Blooms

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Solution Overview

Problem

There is a need for new Dahlia plant cultivars with sturdy container growth, freely basal branching, and attractive ray floret coloration that can thrive under various environmental conditions while maintaining stable genetic traits.

Innovation Solution

The Dahlia hybrida 'BKDAMDR' cultivar, developed through planned breeding, exhibits a broadly upright habit, dense branching, medium-sized dark green leaves, and large semi-double inflorescences with dark red ray florets, differing from its parent and other Dahlia varieties in size, floret color, and peduncle length, and is propagated via terminal cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If Dahlia plants are bred for large inflorescences, then flower size is improved, but plant size becomes too large for container growth

Engineering Contradiction:

Improveinflorescence sizeVSAvoidplant size

Core Design Contradiction:

Area of stationary objectVSVolume of moving object

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific trait combinations: large inflorescence size (7.6 cm diameter) combined with compact plant dimensions (30.5 cm height, 25.4 cm spread). This resolves the contradiction by changing the growth parameters to achieve disproportionate development - large flowers with restrained overall plant size, making it suitable for container growth while maintaining attractive bloom size.

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If Dahlia plants are bred for sturdy container growth, then plant compactness is improved, but branching habit may become restricted

Engineering Contradiction:

Improveplant sizeVSAvoidbranching habit

Core Design Contradiction:

Volume of moving objectVSEase of operation

Solution Approach 1:

The patent applies local quality by creating asymmetric branching patterns where primary branches are strongly developed and upright, while secondary branching is controlled. The plant exhibits 3-5 main branches per container with a freely basal branching habit, creating dense bushy growth locally at the base while maintaining overall compact dimensions. This resolves the contradiction by allowing generous branching in specific zones (base and primary branches) while constraining overall plant volume.

Inventive Principle:

Principle #3Local quality

3Ease of manufacture

If Dahlia plants are bred for dark red ray floret coloration, then color attractiveness is improved, but color stability under varying environmental conditions may be reduced

Engineering Contradiction:

Improveray floret colorationVSAvoidcolor consistency

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The patent applies this principle by selecting for ray florets with dark red coloration that maintains its appearance throughout the brief flowering period. The color is described as stable during the flowering phase, with the plant producing a continuous succession of blooms. This resolves the contradiction by optimizing color stability for the functional flowering period rather than long-term storage stability, ensuring attractive consistent coloration while the flowers are actively displaying.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUSPP28915P3<i>Dahlia </i>plant named ‘BKDAMDR’

Publication Date: 2018.01.30 BEEKENKAMP PLANTZ BV

AI summary

A new and distinct cultivar of Dahlia plant named ‘BKDAMDR’, characterized by its broadly upright plant habit; freely basal branching habit; dense and bushy growth habit; medium-sized dark green-colored leaves; and large semi-double inflorescences with dark red-colored ray florets.