Hydrangea Sepal Picotee Color and Ruffled Margin Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Hydrangea macrophylla cultivars lack sterile florets with white sepals and pink edges that retain coloration throughout their life cycle, particularly during the antique/autumn phase, and do not have ruffled margins, limiting their aesthetic and cut flower appeal.
Innovation Solution
The development of the 'HORTMACLEPA' cultivar, which features sterile florets with white sepals and thin dark pink margins that retain their coloration and exhibit ruffled edges, distinguishing it from other cultivars like 'HORTMAFLAM' and 'Spike', achieved through controlled breeding and asexual propagation by stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional Hydrangea macrophylla cultivars are used, then they have simple sepal margins and limited color variation, but they lack persistent picotee coloration and ruffled margins that retain aesthetic appeal throughout the life cycle
Solution Approach 1:
The patent applies local quality by creating sepals with differentiated regions: the center remains white while the margins develop dark pink picotee coloration. This spatial differentiation of color properties within the sepal structure provides both the desired ruffled margin shape and persistent color contrast throughout the flower's life cycle, resolving the contradiction between simple margins and limited color variation.
2Shape
If sterile florets with white sepals and pink edges are developed, then ornamental value increases, but color stability throughout the life cycle is compromised
Solution Approach 1:
The patent utilizes color changes by programming the sepals to develop dark pink picotee margins while retaining white centers throughout the flower's life cycle. This controlled color differentiation pattern ensures both the desired ornamental picotee appearance and color stability, as the color distribution pattern is maintained consistently from bloom through the antique phase rather than undergoing unwanted color transitions.
3Adaptability or versatility
If controlled breeding is used to develop unique flower colors, then cultivar distinctiveness is achieved, but breeding time and complexity increase
Solution Approach 1:
The patent applies preliminary action by performing controlled cross-breeding between specifically selected parent plants (07-036-01 and 07-120-06) that possess desired coloration traits before mass propagation. This preliminary selective breeding establishes the picotee coloration and ruffled margin characteristics in the 'HORTMACLEPA' cultivar, allowing these distinctive features to be fixed and then efficiently propagated through asexual propagation methods, thereby reducing the overall time required to develop and deploy the new cultivar.
Data Source
AI summary
A new cultivar of Hydrangea macrophylla plant named, ‘HORTMACLEPA’, that is characterized by its inflorescences with sterile florets with sepals that are white in color with thin dark pink margins (picotee) that retain their picotee color until the antique/autumn phase, and have ruffled margins.