Hydrangea Cultivar H217902 Compact Habit Sturdy Stems
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Solution Overview
Problem
Current Hydrangea cultivars lack compact, freely-branching varieties with strong stems and long-lasting, double-type sterile flowers of specific color and form, which are stable across varying environmental conditions.
Innovation Solution
A new Hydrangea macrophylla cultivar 'H217902' is developed through controlled breeding, characterized by compact growth, sturdy stems, early and uniform flowering, mophead-type inflorescences with light red-purple double flowers, and prolonged post-production longevity, achieved through vegetative tip cutting propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional Hydrangea cultivars are used, then they may have simple single-type flowers, but they lack compact growth habit and strong sturdy stems with freely-branching characteristics
Solution Approach 1:
The patent applies local quality by selecting for specific traits in different parts of the plant: compact upright growth habit at the overall plant level, while simultaneously maintaining freely-branching characteristics in the stem structure, and double-type sterile flowers at the inflorescence level. This multi-level selective breeding creates a plant with locally optimized qualities throughout its structure.
2Area of moving object
If Hydrangea plants are bred for large inflorescences, then flower size increases, but stem strength and compactness may be compromised
Solution Approach 1:
The patent employs parameter changes by systematically adjusting multiple growth parameters simultaneously: selecting for compact overall plant size while maintaining strong stem thickness, early flowering timing, and large inflorescence area. The breeding program changes these parameters together to achieve a balanced plant that doesn't sacrifice stem strength for flower size.
3Loss of time
If Hydrangea plants are selected for early flowering, then flowering time advances, but postproduction longevity may be reduced
Solution Approach 1:
The patent applies preliminary action by selecting for early flowering as a predetermined trait that is established during the plant's growth cycle. The breeding program identifies and propagates plants that naturally flower early while maintaining extended postproduction longevity, effectively preparing the plant to achieve both early flowering and long duration performance.
4Adaptability or versatility
If Hydrangea plants are propagated by seed, then genetic diversity is maintained, but stability and true-to-type reproduction are compromised
Solution Approach 1:
The patent applies copying by using vegetative tip cuttings to reproduce the selected Hydrangea plant. This asexual propagation method creates genetic copies of the parent plant that perfectly replicate its unique combination of traits: compact upright habit, freely-branching stems, early flowering, and large double-type inflorescences, ensuring stable true-to-type reproduction across generations.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘H217902’, characterized by its compact, upright and rounded plant habit; vigorous growth habit and moderate growth rate; freely branching habit with strong, thick and sturdy stems; early, freely and uniformly flowering habit; mophead-type inflorescences with numerous double-type sterile flowers that are light red purple in color; and good postproduction longevity.