Daphne MONZULZAY Cultivar Stable Yellow Marginal Variegation

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Solution Overview

Problem

Existing Daphne odora cultivars lack consistent and pronounced yellow marginal variegation, with stability issues in environmental variations, and limited comparison to other commercial varieties in terms of variegation brightness and stability.

Innovation Solution

The cultivar 'MONZULZAY' exhibits stable, bright yellow marginal variegation, reproduced consistently across generations, differing from parent varieties 'Aureomarginata' and 'MonStrk' in variegation intensity and stability, with propagation via semi-hardwood cuttings showing robust and consistent traits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If yellow marginal variegation is present in Daphne odora cultivars, then aesthetic appeal is improved, but stability of variegation deteriorates under environmental variations

Engineering Contradiction:
Improvevariegation brightnessVSAvoidvariegation stability
Core Design Contradiction:
Illumination intensityVSStability of the object's composition

Solution Approach 1:

The patent applies parameter changes by selecting and propagating a mutation with altered variegation parameters - specifically brighter yellow color intensity and increased marginal width - that naturally exhibits greater environmental stability. Through tissue culture propagation, the patent locks in these optimized parameters to maintain consistency across generations despite environmental variations.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses tissue culture copying to replicate the stable variegated phenotype across multiple generations. By propagating through semi-hardwood cuttings and tissue culture, the exact variegation pattern is copied faithfully, ensuring genetic stability and consistent expression of the bright yellow marginal variegation trait.

Inventive Principle:
Principle #26Copying

2Illumination intensity

If variegation is pronounced and bright yellow, then aesthetic appeal is improved, but consistency across generations deteriorates

Engineering Contradiction:
Improvevariegation brightnessVSAvoidgeneration-to-generation consistency
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent employs tissue culture propagation to create exact copies of the variegated plant, ensuring that the bright yellow marginal variegation trait is faithfully replicated across generations. This copying method maintains genetic fidelity and prevents variation that would otherwise occur with traditional propagation methods.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent utilizes the plant's own semi-hardwood cuttings as propagation material, allowing the plant to self-replicate with stable inheritance of the variegation trait. This self-service propagation method, combined with tissue culture techniques, ensures reliable generation-to-generation consistency of the bright yellow marginal variegation.

Inventive Principle:
Principle #25Self-service

3Length of moving object

If yellow margin width is increased, then visual impact is improved, but genetic stability deteriorates

Engineering Contradiction:
Improveyellow margin widthVSAvoidgenetic stability
Core Design Contradiction:
Length of moving objectVSStability of the object's composition

Solution Approach 1:

The patent changes the parameter of yellow margin width by selecting a mutation that naturally exhibits increased marginal width. Through careful selection and tissue culture propagation, this altered parameter is stabilized genetically, allowing the broader yellow margin to be maintained consistently without sacrificing genetic stability.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUSPP35217P2<i>Daphne </i>plant named ‘MONZULZAY’
Publication Date: 2023.06.13 MONROVIA NURSERY CO
  • USPP35217P2 patent drawing
  • USPP35217P2 patent drawing

AI summary

A new and distinct Daphne cultivar named ‘MONZULZAY’ is disclosed, characterized by a distinctive wide bright yellow margin on the foliage. This yellow margin is exceptionally stable and reproduced consistently. The new cultivar is a Daphne, suitable for ornamental garden purposes.