Hydrangea HIPEAR81 Cultivar Stem Strength and Flower Color
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Solution Overview
Problem
Current Hydrangea macrophylla cultivars lack sturdy stems and distinct, long-lasting white flowers with purplish-pink margins, which are desirable for ornamental horticulture.
Innovation Solution
A new cultivar, 'HIPEAR81', resulting from a cross-pollination between proprietary selections of Hydrangea macrophylla, exhibits upright and spreading growth, strong stems, and large, dense mophead inflorescences with white sterile flowers and purplish-pink margins, offering improved post-production longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional Hydrangea macrophylla cultivars are used, then basic ornamental functions are provided, but stems are not sturdy and flower color is not distinct with long-lasting white flowers with purplish-pink margins
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific phenotypic parameters including stem thickness, flower color intensity, and margin coloration. The new cultivar 'HIPEAR81' exhibits modified parameters compared to parent plants, with sturdier stems and distinct white flowers with purplish-pink margins, achieving both structural strength and color distinctiveness through controlled parameter variation.
2Duration of action of stationary object
If conventional Hydrangea macrophylla cultivars are used, then basic flowering is provided, but post-production longevity is insufficient
Solution Approach 1:
The patent applies preliminary action through pre-breeding selection for enhanced post-production longevity traits. The cultivar 'HIPEAR81' was selected and propagated with predetermined characteristics that ensure extended vase life and durability after harvest, allowing the plant to maintain ornamental quality for longer periods without compromising its freely flowering habit during production.
3Strength
If proprietary selection code 1342 (female parent) is used, then pale purple sterile flowers are produced, but stems are not sturdy enough
Solution Approach 1:
The patent applies the intermediary principle by using a controlled cross-pollination process between two proprietary selections (code 1342 as female parent and code 1213 as male parent) to produce the intermediate cultivar 'HIPEAR81'. This intermediary breeding step combines the desirable flower traits from one parent with the sturdier stem characteristics from the other, achieving both strength and aesthetic quality through mediated genetic combination.
4Strength
If proprietary selection code 1213 (male parent) is used, then light purple sterile flowers are produced, but stems are not sturdy enough
Solution Approach 1:
The patent applies the intermediary principle by using a controlled cross-pollination process where selection code 1213 serves as the male parent contributing genetic material for stem strength, while selection code 1342 serves as the female parent. The intermediary F1 hybrid cultivar 'HIPEAR81' combines traits from both parents, achieving sturdier stems while maintaining distinct white flowers with purplish-pink margins, thus resolving the contradiction between stem strength and breeding complexity.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘HIPEAR81’, characterized by its upright and broadly spreading 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 mophead inflorescences with white-colored sterile flowers with purplish pink-colored margins; and good post-production longevity.