Hydrangea Hort 10-087-07 Compact Double Flower Cultivar
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Solution Overview
Problem
Current Hydrangea macrophylla cultivars lack compact plant habits and double flower features, limiting their landscape appeal and diversity.
Innovation Solution
Development of the new cultivar 'Hort 10-087-07' through controlled breeding, which exhibits a compact plant habit and produces double, star-shaped, pink sterile flowers with elongated sepals, achieved via asexual propagation by stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If current Hydrangea macrophylla cultivars are used, then landscape use is possible, but they lack compact plant habits and double flower features
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific phenotypic parameters - compact plant habit (reducing plant size and spreading ratio) and double flower structure (increasing sepal number to 20-40 per flower). The cultivar achieves these parameter changes through controlled cross-pollination between selected parent plants, resulting in F1 hybrids that exhibit the desired compact morphology and double flower characteristics.
Solution Approach 2:
The breeding program segments the selection process into distinct stages: selecting parent plants with specific traits, controlled cross-pollination, seedling evaluation for compact habit and double flower formation, and asexual propagation to stabilize characteristics. This segmentation allows systematic development of the compact double-flowered cultivar through multiple selection cycles.
2Stability of the object's composition
If asexual propagation by stem cuttings is used, then stability across successive generations is achieved, but the process requires specific technical conditions
Solution Approach 1:
The patent employs copying through asexual propagation by stem cuttings, where vegetative parts of the selected cultivar are used to produce genetically identical copies. This copying method maintains the stable compact plant habit and double flower characteristics across successive generations without the genetic variation introduced by sexual reproduction, ensuring true-to-type propagation.
Solution Approach 2:
The breeding program applies preliminary action by first establishing the desired traits through controlled cross-pollination and seedling selection before implementing asexual propagation. The compact habit and double flower structure are developed and stabilized in the parent generation before mass propagation via stem cuttings, ensuring that the propagation process simply replicates already-established characteristics.
Data Source
AI summary
A new cultivar of Hydrangea macrophylla plant named, ‘Hort 10-087-07’, that is characterized by its compact plant habit, its double flowers with a large number of sepals that are pink in color, and its star-shaped sterile flowers comprised of elongated shaped sepals (ovate-elliptic) with pointed tips.