Phlox Duephlopu Cultivar Breeding Stability
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Solution Overview
Problem
There is a need for new compact Phlox plants with attractive flowers that can reproduce stably and consistently exhibit unique traits such as compact growth habit, freely branching, and large, dark purple-colored flowers, which existing cultivars like 'Wespohopi' and 'Wespovio' do not fully meet.
Innovation Solution
A new cultivar 'Duephlopu' of Phlox drummondii was developed through cross-pollination between Phlox drummondii 'Wespohopi' and a proprietary selection, resulting in a compact, upright to spreading plant with freely branching and flowering habits, featuring large dark purple flowers, which differs from its parents in flower color and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If cross-pollination is conducted between Phlox drummondii 'Wespohopi' and proprietary selection PH06-0799-001, then new flower color (dark purple) and compact growth habit are achieved, but stability of trait reproduction must be verified through multiple generations
Solution Approach 1:
The patent performs preliminary verification of trait stability by conducting asexual reproduction through cuttings across multiple generations (at least three successive generations) before final cultivar designation. This preliminary action ensures that the compact growth habit and other desired traits are stable and will be reliably reproduced in future propagation, resolving the contradiction between achieving new traits and ensuring their stable inheritance.
2Reliability
If asexual reproduction by cuttings is performed in controlled environment, then stable and true-to-type reproduction is achieved, but environmental adaptability of the phenotype remains untested
Solution Approach 1:
The patent extracts the genotype from the influence of environmental variables by performing asexual reproduction in a controlled greenhouse environment with standardized conditions (temperature, light intensity, humidity). This isolation allows verification of genetic stability independent of environmental factors, ensuring true-to-type reproduction while acknowledging that environmental adaptability would need separate testing under varied conditions.
Data Source
AI summary
A new and distinct cultivar of Phlox plant named ‘Duephlopu’, characterized by its compact, upright to outwardly spreading and mounding plant habit; freely branching habit; freely flowering habit; and relatively large dark purple-colored flowers.