Cosmopolitan Phlox Compact Habit and Mildew Resistance
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Solution Overview
Problem
Current Phlox paniculata cultivars lack compact growth habits and robust foliage, and often suffer from mildew susceptibility, which limits their horticultural performance and aesthetic appeal.
Innovation Solution
The 'Cosmopolitan' cultivar, characterized by hot pink flowers, a very compact habit, healthy foliage, and good mildew resistance, is developed through open pollination and asexual reproduction, retaining these traits across generations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional Phlox paniculata cultivars are grown, then they produce flowers, but they exhibit loose growth habits and susceptible foliage to mildew
Solution Approach 1:
The patent applies parameter changes by selecting and propagating plants with specific genetic traits that result in altered growth parameters. The 'Cosmopolitan' cultivar exhibits a compact growth habit (25.8 cm height, 22.1 cm diameter) and healthy foliage with mildew resistance, representing changed biological parameters compared to conventional loose-growing cultivars. This is achieved through open pollination followed by asexual reproduction to stabilize the new parameter combination.
Solution Approach 2:
The patent segments the breeding process into two distinct phases: open pollination to generate genetic variation and selection of desirable traits, followed by asexual reproduction through vegetative cuttings to clone and stabilize the selected traits. This segmentation allows independent optimization of genetic diversity generation and trait stabilization, resolving the contradiction between achieving new characteristics and maintaining reliability.
2Productivity
If Phlox paniculata cultivars are bred for larger size, then they produce more blooms, but they become more susceptible to mildew and have less compact growth
Solution Approach 1:
The patent changes the size parameter by developing a compact cultivar (25.8 cm height, 22.1 cm diameter) that produces abundant flowers (100 flowers per inflorescence, continuous blooming from July to September). This represents a parameter change from large, loose-growing cultivars to a compact form that maintains high productivity while improving mildew resistance through healthy foliage.
Solution Approach 2:
The patent uses excessive action in terms of flowering output, producing 100 flowers per inflorescence with continuous blooming throughout the summer season. This excessive flower production is achieved within a compact plant structure, simultaneously improving productivity while maintaining compactness and resistance to mildew through the selected genetic traits.
3Adaptability or versatility
If Phlox paniculata is propagated sexually, then genetic diversity is increased, but distinctive characteristics are not reliably retained across generations
Solution Approach 1:
The patent segments the propagation process into sexual reproduction (open pollination) for generating genetic diversity and asexual reproduction (vegetative cuttings) for stabilizing and cloning desirable traits. This segmentation allows the breeder to first create genetic variation through open pollination, select plants with the desired compact habit and mildew resistance, then use asexual propagation to reliably retain these distinctive characteristics across generations.
Solution Approach 2:
The patent applies preliminary action by performing open pollination and selection before asexual propagation. The distinctive characteristics (compact growth, healthy foliage, mildew resistance) are established through preliminary sexual reproduction and selection, then locked in through subsequent asexual reproduction. This preliminary action ensures that the traits to be cloned are already optimized before the stabilization phase begins.
Data Source
AI summary
A new phlox plant particularly distinguished by hot pink flower color, compact plant habit, healthy foliage and good mildew resistance, is disclosed.