Hydrangea COF-HM3 Rapid Reblooming and Disease Resistance
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Solution Overview
Problem
Current Hydrangea cultivars lack robustness in growth rate, reblooming speed, disease resistance, and adaptability to varying environmental conditions, particularly in temperature and light intensity variations.
Innovation Solution
The new Hydrangea cultivar 'COF-HM3' exhibits a mop head inflorescence, vigorous growth, rapid reblooming, cold hardiness, and high disease resistance, with unique characteristics such as medium pink flowers turning violet with aluminum sulfate treatment, and improved growth and flower production compared to similar varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional Hydrangea cultivars are used, then they have basic growth and flowering characteristics, but they exhibit slow growth rate, slow reblooming speed, and low disease resistance
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a sport mutation with altered genetic parameters that result in simultaneously improved growth rate, reblooming speed, and disease resistance. The vegetative propagation method preserves these optimized parameters across generations, making the cultivar reliable and resistant to diseases while maintaining high productivity.
Solution Approach 2:
The patent uses vegetative propagation (copying) to reproduce the superior traits of the sport mutation throughout the cultivar population. This ensures that all plants inherit the enhanced growth rate, rapid reblooming, and disease resistance characteristics, making the improvements reliable and consistent across the entire cultivar.
2Adaptability or versatility
If conventional Hydrangea cultivars are used, then they have standard adaptability, but they show limited resilience to temperature and light intensity variations
Solution Approach 1:
The patent achieves universality by developing a cultivar that performs reliably across multiple environmental conditions (USDA zones 4-9, varying light intensities, temperature fluctuations). The sport mutation confers broad adaptability to different environments while maintaining stable phenotype through vegetative propagation, allowing the cultivar to function reliably in diverse gardening conditions.
Solution Approach 2:
The sport mutation represents a genetic parameter change that enhances environmental adaptability. Through vegetative propagation, these altered parameters are preserved, ensuring the cultivar maintains both high adaptability to varying environments and stable phenotype expression across generations and conditions.
3Duration of action of moving object
If conventional Hydrangea cultivars are used, then they have standard reblooming time, but they take approximately 12 weeks to rebloom after cut back
Solution Approach 1:
The sport mutation appears to have preliminary physiological preparations that enable faster reblooming. The altered genetics predispose the plant to quicker bud formation and development after cut back, reducing the 12-week period to 8-9 weeks. Vegetative propagation preserves this preliminary action capability across the cultivar.
4Shape
If lace cap inflorescence is used (parent variety), then it has distinctive flower form, but it lacks the vigorous growth and rapid reblooming of the sport mutation
Solution Approach 1:
The patent applies local quality by maintaining the mop head inflorescence shape (a localized structural characteristic) while the rest of the plant exhibits vigorous growth and rapid reblooming traits from the sport mutation. This creates a plant with locally distinctive flower form combined with overall high productivity and vigor.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘COF-HM3’ is disclosed, characterized by vigorously growing, plants exhibiting strong and rapid (8 to 9 weeks) reblooming. Inflorescences are mophead with either medium pink flowers (standard treatment) or violet colored flowers (aluminum sulfate treatment). Plants are cold hardy to USDA Zone 4 and exhibit disease resistance. The new variety is a Hydrangea, normally produced as an ornamental plant.