Dicentra Spring Magic Cultivar Breeding Segmentation

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Solution Overview

Problem

There is a need for a distinct cultivar of Dicentra formosa that exhibits unique characteristics such as upright and rounded plant habit, freely flowering habit, light pink-colored flowers, and good garden performance, which are not met by existing cultivars like the female parent selection or Dicentra formosa 'Bacchanal'.

Innovation Solution

The new cultivar 'Spring Magic' of Dicentra formosa, developed through open-pollination and stabilized via asexual reproduction by cuttings, features darker-colored leaves and light pink flowers, distinguishing it from its parent and 'Bacchanal', with a robust growth habit and adaptability to varying environmental conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If open-pollination is used to create new cultivars, then genetic diversity and unique characteristics can be achieved, but the stability and true-to-type reproduction are compromised

Engineering Contradiction:

Improvegenetic diversityVSAvoidtrue-to-type reproduction

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The breeding program is divided into distinct phases: open-pollination phase for generating genetic diversity, selection phase for identifying stable individuals, and asexual reproduction phase for maintaining stability. This segmentation allows each phase to optimize for its specific goal.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Asexual reproduction by cuttings is used to create exact genetic copies of the selected parent plant, ensuring true-to-type reproduction. This copying mechanism preserves the stable genotype while allowing propagation of the successful cultivar.

Inventive Principle:

Principle #26Copying

2Stability of the object's composition

If asexual reproduction by cuttings is used, then true-to-type reproduction and stability are achieved, but the initial genetic diversity is reduced

Engineering Contradiction:

Improvetrue-to-type reproductionVSAvoidgenetic diversity

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

Open-pollination and selection are performed before asexual reproduction. The desirable genetic diversity is generated and stabilized in the parent generation through controlled cross-pollination, then asexual reproduction is used to propagate the stable result. This preliminary action ensures both diversity and stability are achieved in sequence.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If environmental variations occur, then phenotypic expression may change, but the genotype remains stable

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoidphenotypic consistency

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The plant exhibits different phenotypic characteristics in different environmental conditions, but the core genotype remains stable. The invention accepts and utilizes this local quality variation, noting that while phenotype may vary with environment and cultural practices, the genetic identity is preserved.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP20322P2Dicentra plant named `Spring Magic`

Publication Date: 2009.09.15 BLOOM ADRIAN

AI summary

A new and distinct cultivar of Dicentra plant named ‘Spring Magic’, characterized by its upright and rounded plant habit; freely flowering habit; light pink-colored flowers; and good garden performance.