Calibrachoa Duehulor Cultivar Breeding for Phenotypic Stability
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Solution Overview
Problem
There is a need for new compact Calibrachoa plants with large, attractive flowers that can thrive under various environmental conditions and cultural practices, as existing cultivars may vary significantly in phenotype due to environmental factors without changes in genotype.
Innovation Solution
A new Calibrachoa cultivar 'Duehulor' was developed through planned breeding, exhibiting a compact, semi-upright and spreading plant habit, freely branching with large orange-colored flowers and dark purple centers, achieved through cross-pollination of proprietary selections and stabilized through asexual reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Calibrachoa cultivars are grown under varying environmental conditions, then their phenotype varies significantly, but their genotype remains stable
Solution Approach 1:
The patent applies parameter changes by selectively breeding plants with specific genetic parameters that confer environmental adaptability. The cultivar 'Duehulor' was developed through controlled cross-pollination and selection to optimize growth parameters across varying temperature and light conditions, achieving both environmental adaptability and phenotypic stability simultaneously
Solution Approach 2:
The patent employs self-service through asexual reproduction via vegetative terminal cuttings. This propagation method allows the plant to reproduce itself while maintaining stable genotype and phenotype, eliminating the need for repeated cross-pollination and ensuring consistent trait expression across generations without environmental variation
2Stability of the object's composition
If asexual reproduction is used to stabilize genotype, then genetic consistency is achieved, but breeding progress halts
Solution Approach 1:
The patent applies preliminary action by performing cross-pollination and selection in advance to develop the desired genotype before transitioning to asexual reproduction. The breeding program systematically selected parent plants, performed controlled crosses, and identified superior progeny (like 'Duehulor') before establishing asexual propagation, ensuring that genetic improvement occurs before stabilization
Solution Approach 2:
The patent maintains continuity of useful action by combining sexual reproduction for breeding improvements with asexual reproduction for propagation. The breeding program continues to produce new cultivars through cross-pollination while simultaneously multiplying selected优异个体 through vegetative cuttings, ensuring both breeding progress and commercial production occur concurrently
Data Source
AI summary
A new and distinct cultivar of Calibrachoa plant named ‘Duehulor’, characterized by its compact, semi-upright and outwardly spreading to trailing and decumbent plant habit; freely branching habit; early and freely flowering habit; large orange-colored flowers with dark purple-colored centers and venation; and good garden performance.