Hydrangea macrophylla cultivar B-001 compact growth and mildew resistance
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Solution Overview
Problem
Existing Hydrangea macrophylla cultivars lack a compact, freely flowering, and powdery mildew-resistant variety with large double sterile white flowers and dark green leaves, which are stable across generations and comparable to 'Hanabi' and 'Dancing Snow' but with improved compactness and floriferousness.
Innovation Solution
A new cultivar 'B-001' of Hydrangea macrophylla, resulting from controlled breeding, exhibits a compact plant habit, numerous basal branches, large double sterile white flowers, dark green leaves, and resistance to powdery mildew, achieved through asexual reproduction by softwood stem cuttings, distinguishing it from its parents and similar cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Hydrangea macrophylla cultivars are used, then they may have large flowers or good disease resistance, but they lack the combination of compact growth, high flower production, and powdery mildew resistance with large double sterile white flowers
Solution Approach 1:
The patent combines multiple desirable traits (compact growth habit, high flower production, powdery mildew resistance, and large double sterile white flowers) into a single new cultivar 'B-001' through controlled breeding programs, merging previously separate trait combinations into one unified plant variety
2Quantity of substance
If similar cultivars like 'Hanabi' are used, then they have white double sterile flowers, but they exhibit less compact plant habit and fewer flowers per inflorescence
Solution Approach 1:
The patent changes key morphological parameters of the plant including reducing internode length to achieve compactness (60 cm height), increasing flower number per inflorescence (25-30 flowers), and modifying overall plant architecture while maintaining the white double sterile flower characteristic
3Shape
If similar cultivars like 'Dancing Snow' are used, then they have white flowers, but they have more fertile flowers visible in the center and smaller sterile flowers
Solution Approach 1:
The patent creates local quality differentiation within the inflorescence where sterile flowers (4-5 cm diameter) are prominently displayed on the outer rim while fertile flowers are smaller and less visible in the center, optimizing the visual appeal through strategic flower placement and size variation
4Stability of the object's composition
If asexual reproduction by softwood stem cuttings is used, then the characteristics are stable and reproduced true to type, but this requires establishing propagation protocols
Solution Approach 1:
The patent establishes propagation protocols using softwood stem cuttings taken from mother plants during the active growing season, preparing and treating cuttings with rooting hormones in advance to ensure successful propagation and maintain genetic stability across generations
Data Source
AI summary
A new cultivar of Hydrangea macrophylla, ‘B-001’, that is characterized by its compact and freely flowering plant habit, its numerous basal branches, its large double sterile flowers that are pure white in color, its leaves that are dark green in color, and its resistance to powdery mildew.