Thuja Jantar Amber-Yellow Foliage Stability
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Solution Overview
Problem
There is a need for a distinct and stable variety of Thuja occidentalis that exhibits unique foliage color and growth habit, as existing varieties lack the specific combination of bright amber-yellow to medium-yellow foliage and upright narrow, pyramidal growth characteristics.
Innovation Solution
A naturally occurring branch mutation of Thuja occidentalis 'Emerald Green', designated as 'Jantar', which is propagated via softwood cuttings and maintains its characteristics through successive generations, showcasing medium-sized, dense, and moderately vigorous growth with bright amber-yellow to medium-yellow foliage and an upright narrow, pyramidal habit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a distinct Thuja variety with unique foliage color and growth habit is developed, then visual distinctiveness and landscaping value are improved, but the complexity of breeding and selection processes increases
Solution Approach 1:
The patent uses asexual reproduction via softwood cuttings to create exact genetic copies of the selected mutation. This ensures that the unique features (amber-yellow foliage, pyramidal habit) are replicated faithfully across generations without the variability introduced by sexual reproduction, thus maintaining reliability while simplifying propagation.
Solution Approach 2:
The invention captures a natural mutation that represents a specific parameter change (foliage color to amber-yellow, growth habit to pyramidal). By selecting and propagating this specific parameter change through cuttings, the patent stabilizes these parameters across generations while maintaining ease of reproduction.
2Reliability
If a new Thuja variety with stable unique features is created, then reliability and distinctiveness are improved, but the time required for discovery and selection increases
Solution Approach 1:
The patent involves preliminary screening and selection of cuttings that exhibit the desired mutant traits before mass propagation. By pre-selecting cuttings with the correct amber-yellow foliage and pyramidal habit, the breeding process accelerates while ensuring stability of features in the resulting population.
3Productivity
If softwood cuttings are used for propagation, then ease of reproduction and speed of propagation are improved, but the requirement for controlled environment and expertise increases
Solution Approach 1:
The softwood cutting propagation method allows the plant material to essentially propagate itself under controlled conditions. Once the cutting protocol is established, the process becomes self-sustaining with minimal intervention, requiring only basic controlled environment maintenance rather than complex active management systems.
Data Source
AI summary
‘Jantar’ is a new Thuja variety particularly distinguished by being a medium-sized evergreen shrub, having a medium growth rate, an upright narrow, pyramidal plant habit with pointed tip, dense foliage with leaves held tightly, trunk and twigs completely hidden, and bright amber-yellow to medium-yellow foliage is disclosed.