Oak Red Hibiscus Cultivar Breeding for Compact Habit and Flower Longevity
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Solution Overview
Problem
Existing Hibiscus cultivars lack compact, uniformly spreading plants with attractive oakleaf-shaped leaves and large, long-lasting red flowers, which are stable across varying environmental conditions.
Innovation Solution
A new cultivar of Hibiscus hybrida, 'Oak Red', resulting from a cross-pollination between an unnamed proprietary seedling selection of Hibiscus hybrida and Hibiscus coccineus, exhibiting an upright, dense, and bushy habit with dark green oakleaf-shaped leaves and large red flowers, achieved through vegetative terminal cuttings in a controlled greenhouse environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Hibiscus cultivars are used, then they have basic flowering characteristics, but they lack compactness and uniform spreading habit
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific morphological parameters including compact plant height (30-60 cm), uniform spreading diameter (40-80 cm), and dense branching patterns. These parameter modifications create a novel plant habit that maintains stability across environmental variations while achieving the desired compact, uniform spreading form
2Shape
If existing Hibiscus cultivars are used, then they have basic foliage, but they lack distinctive oakleaf-shaped leaves with dark green color
Solution Approach 1:
The patent applies local quality by developing distinctive oakleaf-shaped leaves with specific local characteristics including lobed margins, pointed tips, and dark green coloration concentrated in specific leaf regions. This localized trait differentiation creates visually striking foliage that maintains consistent morphology and color stability across generations and environmental conditions
3Area of moving object
If existing Hibiscus cultivars are used, then they have basic flowers, but they lack large size and long-lasting red color
Solution Approach 1:
The patent applies merging by combining multiple desirable flower traits into a single cultivar: large flower diameter (15-25 cm), intense red coloration, and extended longevity (7-14 days). This consolidation of previously separate traits into one unified expression creates flowers that simultaneously achieve size, color intensity, and prolonged duration that were not present in parent selections
4Adaptability or versatility
If parent selections are crossed, then new combinations are created, but stability of unique features across generations is challenging
Solution Approach 1:
The patent applies feedback mechanisms through systematic evaluation and selection of progeny plants, where each generation is assessed for adherence to target traits including compact habit, oakleaf-shaped leaves, large red flowers, and uniform spreading. This iterative feedback process ensures genetic stability is maintained while preserving breeding versatility to achieve the novel combination of traits
Data Source
AI summary
A new and distinct cultivar of Hibiscus plant named ‘Oak Red’, characterized by its upright, somewhat, outwardly spreading and dense and bushy plant habit; dark green-colored oakleaf-shaped leaves; freely flowering habit; large red-colored flowers; and good flower longevity.