New Guinea Impatiens SAKIMP033 Breeding for Color and Root Strength
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Solution Overview
Problem
There is a need for a new variety of New Guinea impatiens with distinct flower color and a strong root system that can reproduce true to type in successive generations of asexual propagation.
Innovation Solution
The development of the Impatiens hybrida hort. variety 'SAKIMP033' with dark red-purple and bright flower color and a strong root system, achieved through hybridization of proprietary breeding lines 'NC-1H1' and 'NH-201A-10H', and evaluated for performance and propagation in Salinas, Calif.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If hybridization of proprietary breeding lines is performed to achieve distinct flower color, then flower color brightness and distinctness are improved, but the complexity of breeding and selection process increases
Solution Approach 1:
The patent applies parameter changes by systematically varying breeding parameters including selecting specific parental lines with complementary color traits (salmon-colored female parent and magenta-colored male parent), controlling hybridization conditions, and selecting F1 progeny with optimal color characteristics. This methodical parameter optimization achieves distinct dark red-purple flower color while managing breeding complexity through structured selection criteria.
2Strength
If selection for strong root system is implemented, then root system strength is improved, but the time required for evaluation and propagation increases
Solution Approach 1:
The patent applies preliminary action by selecting parental lines that inherently possess strong root system traits before hybridization. The breeding program pre-establishes genetic foundations for robust root development in the parental generations, allowing F1 progeny to inherit these traits without requiring extensive post-hybridization selection and evaluation time. This advance preparation reduces the time needed to develop varieties with strong root systems.
3Temperature
If heat tolerance is enhanced through breeding, then temperature tolerance is improved, but the number of generations required for stabilization increases
Solution Approach 1:
The patent applies merging by combining heat tolerance traits from both parental lines during hybridization. By selecting parents that both possess heat adaptive characteristics and performing a single hybridization event, the F1 progeny inherit combined heat tolerance genes from both parents. This approach stabilizes heat tolerance in one generation rather than requiring multiple generations of backcrossing and selection, thereby reducing the time needed for trait stabilization.
Data Source
AI summary
A New Guinea impatiens plant particularly distinguished by a dark red-purple and bright flower color with white and red-purple eyes and a strong root system, is disclosed.