Leucophyllum GREHJS cultivar pathogen resistance and vigor
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Solution Overview
Problem
There is a need for a new cultivar of Leucophyllum frutescens that exhibits improved vigor, growth rate, branching, leaf size, flower size, and pathogen resistance compared to existing varieties, while maintaining ease of propagation and good garden performance.
Innovation Solution
The cultivar 'GREHJS' is a naturally occurring mutation of Leucophyllum frutescens 'Greado' characterized by an upright to spreading habit, vigorous growth, dense branching, large silver-colored leaves, and reddish-purple flowers, which is more resistant to pathogens and easier to propagate than its parent and similar varieties like 'Silverado'.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing Leucophyllum varieties are used, then propagation is relatively easy, but vigor, growth rate, and pathogen resistance are insufficient
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a mutant plant that exhibits altered physiological parameters including enhanced vigor, faster growth rate, and improved pathogen resistance compared to the parent 'Greado' variety. The mutant plant demonstrates these improved parameters through natural mutation and selection rather than artificial modification.
2Area of moving object
If existing Leucophyllum varieties are used, then basic growth is maintained, but leaf size and flower size are relatively small
Solution Approach 1:
The mutant plant exhibits parameter changes in morphological characteristics, specifically larger leaf area and larger flower size compared to the parent variety. These parameter changes are maintained through stable asexual reproduction, allowing the improved traits to be consistently expressed in subsequent generations.
3Ease of manufacture
If existing Leucophyllum varieties are used, then propagation is feasible, but propagation loss is higher
Solution Approach 1:
The patent utilizes terminal vegetative cuttings as a propagation method that is both easy to perform and results in minimal propagation loss. This approach treats the cutting process as a simple, efficient operation where the parent plant can continuously produce propagules with high survival rates, effectively minimizing loss.
4Device complexity
If existing Leucophyllum varieties are used, then basic branching is achieved, but branching density and bushiness are insufficient
Solution Approach 1:
The mutant plant exhibits enhanced segmentation through increased branching frequency and density, creating a more divided and complex structural pattern. This segmentation results in a denser, bushier plant form with greater overall volume compared to the parent variety, while maintaining structural integrity.
Data Source
AI summary
A new and distinct cultivar of Leucophyllum plant named ‘GREHJS’, characterized by its upright to somewhat outwardly spreading plant habit; vigorous growth habit and rapid growth rate; freely branching habit; dense and bushy appearance; relatively large silver-colored leaves; freely flowering habit; relatively large reddish purple-colored flowers; relative resistant to pathogens; and good garden performance.