Coprosma NGCOP8 Cultivar Leaf Scorch Resistance and Compact Habit
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Solution Overview
Problem
There is a need for a new cultivar of Coprosma repens that exhibits unique characteristics such as compact growth habit, glossy leaves, and resistance to leaf scorch, which are not adequately met by existing cultivars like 'Tequila Sunrise' and the parent plant 'Pina Colada'.
Innovation Solution
The new cultivar 'NGCOP8' is a naturally occurring branch mutation of Coprosma 'Pina Colada' with distinct features including red and yellow-green speckled young leaves, grey-green mature leaves, and resistance to leaf scorch, achieved through asexual reproduction by tip cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing cultivars like 'Tequila Sunrise' and parent plant 'Pina Colada' are used, then basic ornamental requirements are met, but unique characteristics such as compact growth habit, glossy leaves, and resistance to leaf scorch are not adequately achieved
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a natural mutation that exhibits altered physiological parameters - specifically, the 'NGCOP8' cultivar displays enhanced resistance to leaf scorch while simultaneously maintaining compact growth habit and glossy leaf characteristics. This resolves the contradiction by finding a natural variant where multiple desirable parameters coexist.
2Adaptability or versatility
If naturally occurring branch mutation is selected, then unique characteristics are achieved, but uniformity and stability across generations must be verified through careful observation and asexual reproduction
Solution Approach 1:
The patent employs self-service through asexual reproduction by tip cuttings, where the plant propagates itself to maintain genetic uniformity. The mutation's stability is verified by observing that the unique characteristics (red and yellow-green speckled young leaves, grey-green mature leaves) are consistently reproduced in successive generations without external genetic intervention.
3Shape
If compact growth habit is achieved, then ornamental value is enhanced, but growth rate and plant size are reduced
Solution Approach 1:
The patent resolves this contradiction by selecting a natural mutation where the growth parameters have been altered to favor compact habit while maintaining moderate growth rate. The 'NGCOP8' cultivar achieves rounded, mounding form with freely branching dense habit, creating an ornamental plant that is compact yet still productive in terms of branching and foliage development.
Data Source
AI summary
A new cultivar of Coprosma plant named ‘NGCOP8’ that is characterized by a compact habit, glossy leaves, young upper side leaves that are red in color with speckles of yellow-green, mature upper side leaves that are grey-green in color and resistance to leaf scorch.