Compact Phlox Cultivar Sunphlotori Breeding for Stable Bi-Color Traits
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Solution Overview
Problem
There is a need for new compact Phlox cultivars with attractive flower coloration that can reproduce stably and exhibit desirable growth and flowering habits, as existing cultivars lack the desired compactness and vibrant flower colors.
Innovation Solution
The development of the 'Sunphlotori' cultivar, resulting from a cross-pollination of proprietary Phlox drummondii selections, which exhibits a compact, vigorous, and freely branching growth habit with red purple and white bi-colored flowers, and continuous flowering, achieved through asexual reproduction by vegetative cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Phlox cultivars are used, then they may have larger size and different flower colors, but they lack the desired compactness and vibrant flower colors
Solution Approach 1:
The patent applies parameter changes by selecting and breeding Phlox plants with specific genetic parameters that produce compact growth habits and vibrant bi-colored flowers. The inventor crossed proprietary selections (2Ph-52a and 2Ph-52b) to create new cultivars with desired parameters for compactness and flower coloration, thereby resolving the contradiction between plant size and color stability.
2Shape
If new compact Phlox cultivars with attractive flower coloration are created, then the desired plant characteristics are achieved, but the breeding process requires controlled environments and multiple generations
Solution Approach 1:
The patent applies preliminary action by conducting controlled cross-pollination experiments in advance (June 2002) and maintaining controlled environments during the breeding process. The inventor prepared and managed the breeding program systematically, selecting parents and monitoring progeny in controlled settings to achieve stable compact cultivars with desired flower colors.
Solution Approach 2:
The patent uses copying through vegetative propagation (cuttings) to reproduce the desired compact Phlox cultivars. This allows the new cultivars to be replicated without going through the complex breeding process again, thereby reducing the overall complexity of producing multiple plants with the desired characteristics.
3Reliability
If asexual reproduction by vegetative cuttings is used, then stable reproduction of unique traits is achieved, but the process requires controlled environments
Solution Approach 1:
The patent applies copying through vegetative propagation to create stable reproductions of the desired traits. By taking cuttings from selected parent plants, the new cultivars inherit the compact growth habit and bi-colored flowers with high fidelity, achieving stable trait reproduction while the controlled environment is only required temporarily during the cutting establishment phase.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The 'Sunphlotori' cultivar demonstrates stable reproduction of unique traits, including compact growth, vigorous branching, and distinct flower coloration, outperforming parent selections and comparable cultivars like Grammy Pink and White in terms of size, branching, and leaf characteristics, while maintaining good garden performance and disease/pest resistance.
Implementation Method 1
Asexual reproduction of the new Phlox by vegetative cuttings in a controlled environment in Higashiomi, Shiga, Japan since October, 2005, has shown that the unique features of this new Phlox are stable and reproduced true to type in successive generations.
Data Source
AI summary
A new and distinct cultivar of Phlox plant named ‘Sunphlotori’, characterized by its compact and mounding plant habit; vigorous growth habit; freely branching habit; red purple and white bi-colored flowers; freely and continuous flowering habit; and good garden performance.