Ajuga Toffee Chip Cultivar Foliage and Mildew Resistance
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Solution Overview
Problem
Current Ajuga reptans cultivars lack distinct foliage coloration and mildew resistance, with existing varieties being susceptible to southern blight and fungal diseases.
Innovation Solution
The introduction of Ajuga reptans 'Toffee Chip', a cultivar resulting from a naturally occurring mutation of Ajuga 'Chocolate Chip', characterized by unique gold to cream margin and gray green center foliage, and exhibiting good mildew resistance, achieved through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing Ajuga reptans cultivars are used, then they provide basic foliage color, but they lack distinct foliage coloration and are susceptible to mildew and fungal diseases
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a mutant plant with altered genetic parameters that confer both distinct foliage coloration (gold to cream margins with gray green center) and enhanced mildew resistance. This natural mutation represents a change in biological parameters that simultaneously addresses both the aesthetic and disease resistance requirements.
2Shape
If new foliage coloration is introduced through mutation, then distinct visual characteristics are achieved, but environmental adaptability may be compromised
Solution Approach 1:
The patent applies local quality by maintaining the plant's overall adaptability while introducing localized changes in foliage coloration. The mutant plant retains the parent's dwarf habit, narrow leaves, and blue flowers, while only the leaf margin coloration is altered to gold to cream with gray green center, preserving most adaptive traits while achieving distinctive appearance.
3Stability of the object's composition
If asexual propagation is used to maintain consistent characteristics, then true-to-form reproduction is achieved, but genetic diversity is reduced
Solution Approach 1:
The patent applies copying by using asexual propagation methods (division and micropropagation) to create identical copies of the mutant plant. This ensures that the distinctive gold to cream margin with gray green center foliage coloration and mildew resistance traits are precisely replicated in all progeny, maintaining genetic uniformity and characteristic consistency.
Data Source
AI summary
A new and distinct form of Ajuga reptans plant characterized by its unique foliage coloration and markings. Mature leaves are colored gold to cream on the margin with shades of gray green in the center. New leaves show brown and khaki shades. It has a dwarf habit, small, narrow leaves, and blue flowers on ten centimeter spikes.