Tiarella Appalachian Trail Trailing Habit Breeding
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Solution Overview
Problem
Existing Tiarella cultivars lack a trailing habit and distinct markings, with limited resistance to mildew and susceptibility to root weevils, necessitating a new cultivar with improved trailing characteristics and disease tolerance.
Innovation Solution
The 'Appalachian Trail' cultivar, resulting from a breeding program between Tiarella 'Running Tapestry' and proprietary Tiarella, exhibits medium-large ovate leaves with black splatter markings, excellent trailing habit, and vigor, reproduced through asexual propagation, showcasing enhanced trailing and marking compared to existing varieties like Tiarella 'Delaware'.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Tiarella cultivars are used, then they have established growth habits, but they lack trailing habit and distinct markings
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific morphological parameters (trailing growth habit, leaf marking patterns, plant vigor) to create a new cultivar that meets the desired aesthetic and performance criteria. The breeding process systematically altered plant parameters to achieve the trailing habit and black splatter markings while maintaining disease tolerance.
2Shape
If new breeding is performed to achieve trailing habit and markings, then aesthetic characteristics are improved, but disease resistance may be compromised
Solution Approach 1:
The patent applies local quality by focusing breeding efforts on specific local characteristics (leaf markings and growth habit) while accepting that certain localized vulnerabilities (root weevil susceptibility) may persist. The breeding program selectively enhanced desired traits in specific plant regions and characteristics without claiming universal resistance to all pests.
Data Source
AI summary
A new and distinct cultivar of Tiarella plant characterized by medium large ovate leaves with prominent black splatter markings, medium large ovate leaves with prominent black splatter markings, excellent vigor, and an excellent trailing habit.