Heucherella Infinity cultivar breeding for winter hardiness and extended flowering
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Solution Overview
Problem
Current Heucherella plants lack winter hardiness and have limited flowering periods, with variations in environmental conditions affecting their phenotype and genotype, and existing cultivars do not offer the desired combination of traits such as upright growth habit, unique leaf color, and prolonged flowering.
Innovation Solution
A new Heucherella cultivar 'Infinity' is developed through cross-pollination of Heuchera hybrid 'Shanghai' and Tiarella hybrid 'Jeepers Creepers', exhibiting a uniformly mounded habit, silver and brown leaves, dark pink flower buds, and long flowering periods, with excellent winter hardiness and sterile flowers, distinguishing it from parent and comparative cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing Heucherella cultivars are used, then they can be grown in controlled environments, but they lack winter hardiness and have limited flowering periods
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic traits that extend the flowering period from seasonal to year-round, while simultaneously improving winter hardiness through selection of parent plants with cold tolerance. The cultivar 'Infinity' was developed to flower continuously from spring through autumn and into the next spring, representing a fundamental change in the temporal parameters of flowering duration and seasonal resilience.
2Duration of action of moving object
If Heucherella plants are bred for longer flowering periods, then flowering duration increases, but winter hardiness may be compromised
Solution Approach 1:
The patent merges multiple desirable traits from different parent plants into a single cultivar. The female parent 'Shanghai' contributed extended flowering capability, while the male parent 'Jeepers Creepers' contributed winter hardiness and compact mounded habit. Through controlled cross-pollination and selection, these previously separate trait combinations were merged into the single cultivar 'Infinity', which exhibits all three characteristics simultaneously: long flowering period, winter hardiness, and upright mounded growth habit.
3Stability of the object's composition
If environmental conditions vary, then phenotype may change, but genotype should remain stable
Solution Approach 1:
The patent employs asexual reproduction through stem cuttings to propagate the cultivar 'Infinity'. This method produces genetically identical clones that maintain stable genotype and consistent phenotype across generations, eliminating the genetic variability that would occur with seed propagation. The asexual reproduction ensures that the unique combination of traits (silver-brown foliage, upright mounded habit, long flowering period) is replicated faithfully in each new plant, making the cultivar reliable for commercial production and landscape use.
Data Source
AI summary
A new and distinct cultivar of Heucherella plant named ‘Infinity’, characterized by its upright and uniformly mounded plant habit; moderately vigorous growth habit; silver and brown-colored leaves; dark to medium pink-colored flower buds; numerous sterile light pink to white-colored flowers held above the foliar plane on brown-colored peduncles; long flowering period; and excellent winter hardiness.