Hydrangea Hokomamipe Cultivar Breeding for Dark Foliage and White Inflorescences
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Solution Overview
Problem
There is a need for a new cultivar of Hydrangea macrophylla that combines dark green-black foliage with light pink to white inflorescences, which are not currently available in existing cultivars.
Innovation Solution
The development of the 'Hokomamipe' cultivar, which results from a controlled breeding program aimed at creating a Hydrangea with dark leaves and light pink to white inflorescences, achieved through a cross between proprietary plants and stabilized through asexual propagation by stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Hydrangea macrophylla cultivars are used, then common foliage colors (light green to dark green) and inflorescence colors (pink, red, blue, purple) are available, but the specific combination of very dark green-black foliage with clear white sterile flower sepals and light pink margins is not available
Solution Approach 1:
The breeding program systematically varied color parameters in Hydrangea macrophylla by crossing parents with different color characteristics (one parent with dark green foliage and another with light green foliage) to produce offspring with the specific phenotype of very dark green-black foliage combined with clear white sterile flower sepals and light pink margins, a color combination not present in either parent or existing cultivars
2Stability of the object's composition
If asexual propagation by stem cuttings is used, then the unique color characteristics are stabilized and reproduced true to type, but the propagation process requires controlled environmental conditions and time for root development
Solution Approach 1:
The cutting protocol prepares all necessary materials and conditions in advance (sterilized tools, appropriate rooting medium, controlled environment setup) before taking cuttings, and the cuttings themselves are prepared with specific characteristics (node position, leaf removal) to optimize rooting efficiency and reduce propagation time while ensuring color stability
Data Source
AI summary
A new cultivar of Hydrangea macrophylla plant named ‘Hokomamipe’ that is characterized by its very dark green-black foliage, its inflorescences with sterile flower sepals that are clear white in color with light pink margins when mature. its sterile flower sepals with moderately serrated margins, and its compact plant habit.