Hydrangea Cultivar H213905 Stem Strength and Inflorescence Size
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Solution Overview
Problem
There is a need for new Hydrangea macrophylla cultivars with strong, sturdy stems, large inflorescences, attractive flower color, and good post-production longevity, as existing varieties may lack these desirable traits or exhibit variability under different environmental conditions.
Innovation Solution
A new Hydrangea macrophylla cultivar 'H213905' was developed through planned breeding, characterized by a compact, upright growth habit, strong stems, freely branching, and large light red-purple lacecap-type inflorescences, which are stable and reproduce true to type via vegetative cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing Hydrangea varieties are used, then they may have some desirable traits, but they lack a combination of strong stems, large inflorescences, attractive color, and post-production longevity
Solution Approach 1:
The patent combines multiple desirable traits from different parent plants into a single cultivar. The female parent contributed strong stems and good branching, while the male parent contributed large inflorescences and flower color. The resulting cultivar 'H213905' merges these traits along with improved post-production longevity, creating a plant that exhibits all desired characteristics simultaneously rather than requiring separate varieties for each trait.
2Stability of the object's composition
If existing Hydrangea varieties are used, then they may exhibit some characteristics, but they show variability under different environmental conditions
Solution Approach 1:
The patent achieves environmental stability through selective breeding that optimizes genetic parameters for consistency. The cultivar 'H213905' was selected from a controlled cross-pollination program specifically for its stable expression of traits across varying environmental conditions. The breeding process involved evaluating numerous progeny under controlled greenhouse conditions to identify plants with consistent phenotypic expression, thereby selecting for genetic parameters that minimize environmental variability impact.
3Area of stationary object
If larger inflorescences are selected for, then flower size increases, but stem strength may be compromised
Solution Approach 1:
The patent successfully merged the trait of large inflorescences from the male parent with strong stem characteristics from the female parent. The cultivar 'H213905' produces large lacecap-type inflorescences (15-20 cm in diameter) while maintaining strong, sturdy stems that are sufficiently robust to support the weight and size of the flower heads, thereby resolving the trade-off between inflorescence size and stem strength.
4Productivity
If more vigorous growth habit is selected for, then plant productivity increases, but plant compactness and control become difficult
Solution Approach 1:
The patent applies local quality by creating a plant with differentiated growth characteristics in different regions. The cultivar 'H213905' exhibits a compact overall plant habit (30-40 cm height) while maintaining vigorous local growth in the form of freely branching stems and large inflorescences. This localized vigor allows the plant to produce abundant flowers within a compact form, achieving both productivity and controllability.
Data Source
AI summary
A new arid distinct cultivar of Hydrangea plant named ‘H213905’, characterized by its compact, upright and somewhat outwardly spreading plant habit; vigorous growth habit; freely branching habit; strong and sturdy stems; freely and uniformly flowering habit; and lacecap-type inflorescences with large sterile flowers that are light red purple in color.