Impatiens DANCEL877 Cultivar Breeding for Compact Growth and Large Flowers
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Solution Overview
Problem
There is a need for Impatiens cultivars with large flowers, excellent basal branching, and a compact-mounded growth habit, which existing cultivars do not adequately fulfill.
Innovation Solution
The development of the new Impatiens Hawkeri cultivar 'DANCEL877' through cross-pollination between proprietary breeding selections NG-4-4773 and H-218, resulting in light pink-colored flowers, medium green foliage, and a moderately vigorous, compact-mounded growth habit, achieved through asexual reproduction by terminal stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cross-pollination breeding is performed to develop new Impatiens cultivars, then flower color and growth habit can be improved, but breeding time and complexity increase
Solution Approach 1:
The patent performs preliminary selection of parent plants with desired traits (flower color, growth habit) before cross-pollination. The female parent NG-4-4773 and male parent H-218 were pre-selected for their complementary characteristics, which accelerates the breeding process by reducing the need for multiple generations of selection.
Solution Approach 2:
The patent employs systematic observation and recording of progeny characteristics to provide feedback on breeding success. By monitoring flower color, growth habit, and other traits in the F1 generation, breeders can immediately assess whether the cross achieved the desired outcomes, allowing for rapid adjustment of breeding strategies.
2Area of moving object
If selection for large flowers is intensified, then flower size increases, but may compromise other growth characteristics
Solution Approach 1:
The patent applies local quality by selecting for large flower size in specific regions of the plant while maintaining overall compact growth habit. The breeding program specifically targets flower corolla dimensions without compromising the plant's general architecture, achieving localized improvement in flower size while preserving desirable growth characteristics.
Solution Approach 2:
The patent changes multiple parameters simultaneously through controlled cross-pollination, including flower size, flower color, and growth habit. By adjusting the combination of parental traits, the breeding program achieves large flowers (improving parameter 5) while maintaining compact-mounded growth habit (preserving parameter 35).
3Shape
If compact-mounded growth habit is selected for, then plant compactness improves, but may reduce overall plant vigor
Solution Approach 1:
The patent creates a composite genetic makeup by combining traits from two different parent selections. The female parent NG-4-4773 contributes compact growth habit while the male parent H-218 contributes vigor traits, resulting in a hybrid that exhibits both compact-mounded shape and moderate vigor, effectively combining previously conflicting characteristics.
Data Source
AI summary
A new and distinct cultivar of Impatiens plant named ‘DANCEL877’, characterized by its light pink-colored flowers, medium green-colored foliage, and moderately vigorous, compact-mounded growth habit, is disclosed.