Hydrangea HIFIR Cultivar Stem Strength and Flower Longevity
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Solution Overview
Problem
Existing Hydrangea macrophylla cultivars lack sturdy stems and good post-production longevity, leading to reduced durability and shorter flower maintenance in environmental variations.
Innovation Solution
A new cultivar, 'HIFIR', resulting from a breeding program, exhibits upright and spreading growth, strong stems, continuous flowering, large dense inflorescences with red to red-purple sterile flowers, and improved post-production longevity, achieved through cross-pollination and asexual reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional Hydrangea macrophylla cultivars are used, then they can be grown and flower, but they lack sturdy stems and have poor post-production longevity
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic parameters that result in sturdier stems and extended flower longevity. The new cultivar 'HIFIR' exhibits these improved parameters through selective breeding from the cross between parent selections, achieving stems that are visibly stronger and flowers that maintain quality longer in post-production.
2Duration of action of moving object
If existing Hydrangea cultivars are used, then they can produce flowers, but the flowers have reduced durability and shorter maintenance under environmental variations
Solution Approach 1:
The patent changes the genetic parameters of the Hydrangea plant through controlled cross-pollination and selection, resulting in a cultivar with extended flower maintenance duration. The new cultivar 'HIFIR' maintains its floral quality for longer periods and shows greater reliability when exposed to varying environmental conditions compared to parent selections.
3Strength
If parent selections are used for breeding, then they can produce progeny, but the progeny lack the sturdiness and longevity of the new cultivar
Solution Approach 1:
The patent applies preliminary action by conducting controlled cross-pollination between selected parent plants before asexual reproduction. This preliminary breeding action creates progeny with improved genetic traits for sturdiness and longevity, which are then stabilized through asexual reproduction to ensure true-to-type expression in successive generations.
Solution Approach 2:
The patent employs asexual reproduction through terminal vegetative cuttings that allow the plant to self-reproduce and maintain the improved traits independently. This self-service propagation method ensures that the sturdiness and longevity characteristics are automatically reproduced in all subsequent generations without requiring further intervention.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘HIFIR’, characterized by its upright and broadly spreading plant habit; freely branching habit; strong and sturdy stems; freely and continuous flowering habit; large and dense inflorescences with red to red purple-colored sterile flowers; and good post-production longevity.