Begonia Roxanne Cultivar Mutation for Golden Yellow Double Flowers
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Solution Overview
Problem
There is a need for a distinct cultivar of Begonia×hiemalis that exhibits unique characteristics such as upright and spreading growth habit, dark green leaves, and golden yellow double flowers, which are not present in existing varieties like 'Rachel' and 'Bbmil', and differ significantly in leaf margin serration and flower form from 'Blitz'.
Innovation Solution
A naturally occurring mutation of Begonia×hiemalis 'Rachel' resulting in the new cultivar 'Roxanne', characterized by an upright, freely branching habit, dark green leaves with double-serrate margins, and golden yellow double flowers, which are stable and reproduce true to type through vegetative cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a naturally occurring mutation is selected to create a new cultivar, then unique characteristics such as upright growth habit, double-serrate leaf margins, and golden yellow double flowers are achieved, but the parent variety's characteristics (semi-double flowers, crenate margins) are lost
Solution Approach 1:
The patent captures a naturally occurring mutation that represents a parameter change in the Begonia×hiemalis genome, resulting in new phenotypic characteristics including upright growth habit, double-serrate leaf margins, and golden yellow double flowers. This principle is applied by selecting and propagating the mutant plant that exhibits these changed parameters compared to the parent variety 'Rachel'.
2Reliability
If vegetative cuttings are used for asexual reproduction, then the unique features are stable and reproduce true to type, but genetic diversity is reduced
Solution Approach 1:
The patent employs vegetative propagation through cuttings to create identical copies of the mutant plant, ensuring that the unique characteristics (upright habit, double-serrate margins, golden yellow double flowers) are reproduced true to type in successive generations. This copying method maintains genetic fidelity and reliability of the desired traits.
3Shape
If the cultivar is compared to existing varieties like 'Bbmil' and 'Blitz', then distinct differences in flower color, form, and leaf margin are identified, but the ability to compete with established varieties is challenged
Solution Approach 1:
The patent emphasizes the local quality differences between 'Roxanne' and competing varieties, specifically highlighting the unique combination of golden yellow double flowers, upright outwardly spreading mounded habit, and double-serrate leaf margins. These localized distinctive features create market differentiation and competitive advantage.
Data Source
AI summary
A new and distinct cultivar of Begonia plant named ‘Roxanne’, characterized by its upright, outwardly spreading and mounded plant habit; freely branching habit; dark green-colored leaves; double flowers with numerous tepals that are golden yellow in color and held above and beyond the foliage; and excellent postproduction longevity.