Extrepink Hibiscus Cultivar Breeding Compact Form
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Solution Overview
Problem
There is a need for new compact Hibiscus plants with attractive and large flowers, as existing cultivars do not meet the desired compactness and flower color requirements.
Innovation Solution
A new cultivar, 'Extrepink', was developed through cross-pollination of Hibiscus moscheutos 'Sparkle' and a proprietary selection CB51, resulting in a compact plant with dark green leaves and large light red purple-colored flowers with darker red purple centers and venation, offering improved flower longevity and a distinct appearance compared to parent and other cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If cross-pollination is performed to create new Hibiscus varieties, then flower color and appearance can be improved, but plant compactness may be compromised
Solution Approach 1:
The breeding program selectively targets specific traits (flower color, plant compactness) in different parts of the plant. The 'Extrepink' cultivar exhibits light red purple-colored petals with darker red purple centers and venation, while maintaining a compact overall plant form through controlled cross-pollination between 'Sparkle' and selection CB51.
Solution Approach 2:
The invention changes key parameters of the Hibiscus plant through breeding: flower color parameters (from white with red purple centers in 'Sparkle' to light red purple with darker red purple centers in 'Extrepink'), plant size parameters (achieving compactness of about 65.9 cm height and 69.3 cm diameter), and flower size parameters (large flowers about 18.1 cm in diameter).
2Area of stationary object
If larger flowers are developed through breeding, then flower size increases, but plant vigor and growth rate may be reduced
Solution Approach 1:
The breeding program optimizes different parts of the plant for different functions: large flowers (about 18.1 cm diameter) are developed for aesthetic appeal, while the overall plant structure is kept compact (about 65.9 cm height) for manageable growth. The plant exhibits moderate vigor that balances flower production with sustainable growth.
Solution Approach 2:
The cultivar produces large flowers (about 18.1 cm diameter) that are notably larger than many commercial varieties, while accepting moderate plant vigor rather than maximum growth rate. This partial optimization of flower size over overall plant vigor achieves the breeding objective of large-flowered compact plants.
Data Source
AI summary
A new and distinct cultivar of Hibiscus plant named ‘Extrepink’, characterized by its upright and somewhat outwardly spreading plant form; dark green-colored leaves; freely flowering habit; large light red purple-colored flowers with darker red purple-colored centers and venation; and good flower longevity.