Hydrangea Red Sensation Cultivar Mutation
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Solution Overview
Problem
There is a need for a distinct cultivar of Hydrangea macrophylla that exhibits unique characteristics such as upright and mounded growth habit, strong roots and stems, and specific flower color, which are not met by existing cultivars like Early Sensation and First Red, particularly in terms of flower color and environmental adaptability.
Innovation Solution
The cultivar 'Red Sensation' is a naturally occurring branch mutation of Hydrangea macrophylla, characterized by upright and mounded growth, strong roots and stems, and light red-purple colored flowers, which are stable through asexual reproduction by vegetative cuttings, differing from its parent and other cultivars in flower color and environmental adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing cultivars like Early Sensation and First Red are used, then established growth habits are maintained, but flower color variety and environmental adaptability are limited
Solution Approach 1:
The patent applies parameter changes by selecting a natural mutation with altered flower color parameters (light red-purple vs. pink or dark red-purple) and stabilizing this new parameter through asexual reproduction. The cultivar 'Red Sensation' represents a change in the flower color parameter while maintaining adaptability to various environmental conditions including temperature ranges from 10°C to 30°C day and 10°C to 18°C night.
2Stability of the object's composition
If natural mutations are selected and stabilized through asexual reproduction, then unique and stable phenotypes are achieved, but the time required for cultivar development increases
Solution Approach 1:
The patent applies preliminary action by performing asexual reproduction through vegetative cuttings to stabilize the desired phenotype before commercial propagation. The mutation was discovered in 2001 and stabilized through multiple generations of cutting propagation in a controlled environment, ensuring phenotype stability before release. This preliminary stabilization phase is necessary to ensure the cultivar will reproduce true to type.
Solution Approach 2:
The patent uses copying through vegetative cuttings to replicate the exact genotype and phenotype of the selected mutation. By taking cuttings from the mutated branch and rooting them, the inventor creates identical copies that maintain the unique light red-purple flower color and upright mounded habit, ensuring genetic and phenotypic consistency across generations.
3Strength
If upright and mounded growth habit with strong roots and stems is selected, then plant structure and vigor are improved, but flower color differentiation from parent cultivar is not achieved
Solution Approach 1:
The patent merges multiple desirable traits by selecting a natural mutation that exhibits both improved plant structure (upright mounded habit, strong lateral branches, robust stems) and differentiated flower color (light red-purple). The selected cutting combined these traits, and subsequent propagation maintained the combination, creating a cultivar that exceeds the parent in both structural vigor and color distinction.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘Red Sensation’, characterized by its upright and mounded plant habit; strong roots and stems; flowering during first year of production; and large inflorescences with light red purple-colored flowers.