Hydrangea HIMEA Cultivar Stem Strength and Longevity
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Solution Overview
Problem
There is a need for new, sturdy, and strong mophead-type Hydrangea plants with attractive inflorescences and good post-production longevity that can reproduce true to type through asexual reproduction, addressing the limitations of existing cultivars in terms of stem strength and flower color.
Innovation Solution
A new cultivar of Hydrangea macrophylla, 'HIMEA', resulting from a cross-pollination between proprietary selections 1452 and 1671, characterized by compact growth, sturdy stems, dark green leaves, and large, dense inflorescences with vivid purplish-red flowers, exhibiting improved stem strength and lighter sepals compared to parent and similar cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing mophead-type Hydrangea cultivars are used, then they provide ornamental value with flower inflorescences, but they lack sufficient stem strength and have limited post-production longevity
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific genetic traits that alter stem strength parameters and flower longevity parameters. The cross-pollination between parent plants with different genetic characteristics produced offspring with improved stem strength and extended post-production longevity, demonstrating changes in biological parameters through controlled breeding.
2Stability of the object's composition
If existing Hydrangea cultivars are propagated, then they reproduce, but they do not reproduce true to type through asexual reproduction
Solution Approach 1:
The patent employs copying through asexual propagation methods such as cuttings, where the genetic material is replicated exactly from the parent plant. This ensures that the offspring are true-to-type copies of the selected parent, maintaining genetic stability and reliable reproduction of desired traits including stem strength and flower characteristics.
3Productivity
If vigorous growth is selected for in Hydrangea breeding, then plant size increases, but stem strength and structural stability may be compromised
Solution Approach 1:
The patent applies local quality by selectively enhancing specific local characteristics (stem thickness, wood density, structural integrity) while maintaining overall plant vigor and growth rate. The breeding program targeted specific local qualities in the stem structure without sacrificing general plant productivity or growth performance.
Solution Approach 2:
The breeding program changed physical parameters of the stem including thickness, density, and structural composition, while maintaining growth rate parameters. This allowed the plant to achieve both vigorous growth and strong stem structure through coordinated changes in multiple biological parameters.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘HIMEA’, characterized by its compact, upright and broadly outwardly spreading and mounding plant habit; moderately vigorous and moderate growth rate; freely branching habit; strong and sturdy stems; dark green-colored leaves; freely flowering habit; large and dense inflorescences with vivid purplish red-colored sterile flowers; and good post-production longevity.