Sedum Firecracker Cultivar with Compact Mounded Habit and Disease Resistance
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Solution Overview
Problem
Existing Sedum cultivars lack a compact, mounded habit without flopping and retain dark cherry red foliage throughout the growing season, and are susceptible to Sedum foliage blight.
Innovation Solution
The development of Sedum 'Firecracker', a hybrid cultivar with deep cherry-red shiny foliage, compact mounded habit, heavy branching, large pink flower heads, and high resistance to Sedum foliage blight, achieved through asexual propagation by tip stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Sedum cultivars are used, then they can be grown as groundcover, but they lack compact mounded habit and tend to flop
Solution Approach 1:
The patent applies parameter changes by developing a new cultivar with specific genetic characteristics that alter the plant's growth parameters. The 'Firecracker' Sedum exhibits a compact mounded habit with dense branching, fundamentally changing the morphological parameters compared to traditional sprawling Sedum varieties. This genetic parameter change achieves both the desired shape and structural stability simultaneously.
2Stability of the object's composition
If existing Sedum cultivars are used, then they can provide foliage color, but the dark cherry red color is not retained throughout the growing season
Solution Approach 1:
The patent utilizes parameter changes by selecting and propagating plants with specific genetic traits that stabilize the anthocyanin pigment production. The 'Firecracker' cultivar maintains deep cherry-red foliage color consistently throughout the growing season, transforming the temporal parameter of color retention from seasonal/variable to continuous/stable through genetic selection and asexual propagation.
3Reliability
If existing Sedum cultivars are used, then they can be propagated, but they are susceptible to Sedum foliage blight
Solution Approach 1:
The patent applies the blessing in disguise principle by developing a cultivar that exhibits high resistance to Sedum foliage blight. The 'Firecracker' Sedum transforms the harmful factor of disease susceptibility into a beneficial trait through selective breeding, where the plant's genetic composition naturally resists the blight pathogen, converting what was traditionally a vulnerability into a strength.
4Stability of the object's composition
If asexual propagation by tip stem cuttings is used, then the characteristics are stable and reproduced true to type, but multiple generations must be propagated to establish the cultivar
Solution Approach 1:
The patent applies preliminary action by establishing a standardized asexual propagation protocol using tip stem cuttings that has been optimized and documented. The preliminary work of selecting the parent plant, establishing cutting protocols, and verifying trait stability across generations creates a reproducible system. Once established, this preliminary framework enables rapid multiplication of true-to-type plants without requiring repeated selection and evaluation processes.
Data Source
AI summary
A new cultivar of Sedum plant named ‘Firecracker’ that is characterized by its very shiny foliage that is deep cherry-red in color with the color retained in spring, summer and fall, its very heavy branching with the stems forming a mounded plant habit with no opening in the center or flopping of stems, its large pink flower heads, its very heavy vegetative bud production during winter dormancy, and its high resistance to Sedum foliage blight.