Sedum Diamond Edge Variegated Foliage Stability
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Solution Overview
Problem
Current Sedum cultivars lack a stable and distinct greenish-yellow variegated foliage characteristic, which is desirable in horticultural practices.
Innovation Solution
A new cultivar, 'Diamond Edge', is developed through asexual reproduction of a naturally occurring mutation in Sedum 'Matrona', exhibiting greenish-yellow variegated foliage and retaining its characteristics through successive propagations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a naturally occurring mutation is selected for greenish-yellow variegated foliage, then the foliage color variation is improved, but the stability of variegation through successive propagations deteriorates
Solution Approach 1:
The patent uses asexual reproduction methods (vegetative cuttings and tissue culture) to create copies of the mutated plant. These copies inherit the greenish-yellow variegated foliage characteristic from the parent plant 'Matrona', allowing the desirable color variation to be replicated and maintained across multiple generations without genetic recombination that would otherwise cause variation loss.
Solution Approach 2:
The patent changes the propagation method parameter from sexual reproduction to asexual reproduction (specifically tissue culture and vegetative cuttings). This parameter change ensures that the offspring are genetically identical clones of the parent, thereby maintaining the stable greenish-yellow variegated foliage characteristic through successive propagations.
2Stability of the object's composition
If conventional Sedum cultivars are used, then the foliage color is uniform, but the horticultural appeal and distinctiveness deteriorate
Solution Approach 1:
The patent applies local quality by introducing variegation (different colors) specifically in the foliage of the Sedum plant while maintaining uniformity in other characteristics. The greenish-yellow variegated foliage provides local color variation that enhances horticultural appeal, while the rest of the plant structure remains consistent and uniform.
Data Source
AI summary
A new Sedum plant particularly distinguished by greenish-yellow variegated foliage, is disclosed.