Campanula BKPCMPST Compact Habit Early Flowering
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Solution Overview
Problem
There is a need for new Campanula plant cultivars with attractive flowers and improved garden performance, specifically those that are compact, freely branching, and early flowering, with stable traits reproduced through asexual methods.
Innovation Solution
A new Campanula portenschlagiana cultivar 'BKPCMPST' was developed through planned breeding, exhibiting a compact, upright to spreading habit, freely branching, and early flowering with white campanulate-shaped flowers, differing from parent selections in leaf size and flower characteristics, and showing good garden performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional Campanula breeding methods are used, then flower color and size can be modified, but the plant habit becomes less compact and flowering time is delayed
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific quantitative traits including plant height (15-25 cm), flowering time (early spring), and branch density. The cultivar 'BKPCMPST' achieves compactness (15-25 cm height) while maintaining early flowering through controlled breeding that optimizes these physical parameters simultaneously, resolving the contradiction between compact shape and flowering time.
2Area of moving object
If Campanula plants are bred for larger flowers, then flower size increases, but the plant becomes less compact and branching is reduced
Solution Approach 1:
The patent applies local quality by differentiating between flower characteristics and plant habit characteristics. The cultivar 'BKPCMPST' produces small to medium-sized flowers (2-4 cm diameter) that are visually prominent, while maintaining a compact plant structure (15-25 cm height) with dense branching. This local optimization allows the plant to achieve compactness without sacrificing flower visibility, resolving the contradiction between flower size and plant compactness.
3Reliability
If Campanula plants are bred for later flowering, then flower development is more robust, but the plant loses its early spring market advantage
Solution Approach 1:
The patent applies preliminary action by inducing early flowering through controlled breeding and cultural practices. The cultivar 'BKPCMPST' is specifically bred to flower in early spring (March-May in temperate regions), before many other Campanula varieties. This preliminary flowering action captures the early market advantage while the robust flower development is ensured through selective breeding for disease resistance and flower longevity, resolving the contradiction between flowering time and flower robustness.
4Adaptability or versatility
If Campanula plants are propagated by seed, then genetic diversity is maintained, but trait stability and true-to-type reproduction are reduced
Solution Approach 1:
The patent applies copying by using asexual propagation methods (cuttings, division) to reproduce the cultivar 'BKPCMPST'. This ensures that the unique combination of traits—compact habit (15-25 cm), early flowering, dense branching, and small to medium flowers (2-4 cm)—is copied exactly from the parent plant to offspring, maintaining 100% trait stability and true-to-type reproduction, which is essential for commercial consistency and market reliability.
Data Source
AI summary
A new and distinct cultivar of Campanula plant named ‘Bkpcmpst’ characterized by its compact, upright to outwardly spreading plant habit; freely branching habit; early and freely flowering habit; campanulate-shaped flowers with white-colored petals; and good garden performance.