Impatiens Silte Redsar Cultivar Breeding for Double Rose-Shaped Flowers
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Solution Overview
Problem
There is a need for a new cultivar of Impatiens walleriana that combines desirable traits such as double, rose-shaped flowers, semi-compact growth habit, and vigorous branching, which are not adequately met by existing cultivars like 'ID04-377-1' and 'ID03-1913', and commercial cultivars like 'Balfiespray'.
Innovation Solution
The development of the 'Silte Redsar' cultivar, which results from the hybridization of proprietary red star-flowered Impatiens plants 'ID04-377-1' and 'ID03-1913', exhibiting double, rose-shaped red and white flowers, semi-compact, upright growth, and vigorous branching, achieved through asexual propagation and tissue culture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing cultivars like 'ID04-377-1' and 'ID03-1913' are used, then red star-flowered Impatiens plants are available, but they do not produce double, rose-shaped flowers
Solution Approach 1:
The breeding program segmented the selection process into multiple stages: initial hybridization between 'ID04-377-1' and 'ID03-1913', followed by systematic evaluation of numerous seedlings, selection of promising individuals, and repeated asexual propagation to stabilize the double, rose-shaped flower trait. This segmentation allowed the complex trait to be isolated and maintained reliably.
Solution Approach 2:
The invention changed the floral morphology parameters by crossing two parentals with different flower types. The female parent 'ID04-377-1' contributed red star-flowered characteristics while the male parent 'ID03-1913' contributed to the double, rose-shaped flower development. Through controlled hybridization and selection, the desired flower shape parameters were stabilized.
2Shape
If commercial cultivars like 'Balfiespray' are used, then reliable plant performance is achieved, but they lack the desired double, rose-shaped flower morphology and compact growth habit
Solution Approach 1:
The invention merged desirable traits from two different parentals: the red star-flowered characteristics of 'ID04-377-1' and the double flower potential of 'ID03-1913'. By combining these genetic resources through controlled hybridization and selecting for the double, rose-shaped flower trait, the cultivar achieves both compact growth habit and superior flower morphology.
3Reliability
If asexual propagation is used to maintain cultivar characteristics, then true-to-type propagation is achieved, but the process requires repeated selection and evaluation
Solution Approach 1:
The breeding program performed preliminary selection and evaluation of seedlings before final cultivar establishment. Multiple generations of asexual propagation were conducted with systematic selection at each stage, ensuring that only plants exhibiting the desired double, rose-shaped flower morphology and compact growth habit were propagated further. This preliminary action filtered out variability and established a reliable cultivar.
Data Source
AI summary
A new Impatiens plant particularly distinguished by double, rose-shaped, red and white flowers, semi-compact, upright, outwardly spreading and mounded plant habit, free flowering, good basal branching, and moderately vigorous growth habit, is described.