Asplenium antiquum cultivar YUASPGIO cold hardiness
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Solution Overview
Problem
Existing Asplenium antiquum cultivars lack improved vigor, fast growth rate, cold hardiness, heat tolerance, and distinct foliage characteristics, particularly in asexual reproduction and environmental adaptability.
Innovation Solution
The cultivar 'YUASPGIO' exhibits enhanced vigor, fast growth, and improved cold and heat tolerance, characterized by abundant, dark green, coriaceous foliage with irregularly incised margins, achieved through multiple cycles of spore propagation and selection, and stable asexual reproduction via mericloning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Asplenium antiquum cultivars are propagated, then they maintain genetic stability, but they lack improved vigor, fast growth rate, cold hardiness, heat tolerance, and distinct foliage characteristics
Solution Approach 1:
The patent applies parameter changes by selecting and propagating plants with specific genetic parameters that confer improved vigor, faster growth rates, cold hardiness, heat tolerance, and distinct foliage characteristics. Through multiple cycles of spore propagation and selection, the cultivar 'YUASPGIO' was developed with optimized genetic parameters that simultaneously improve environmental adaptability while maintaining trait consistency across generations.
Solution Approach 2:
The patent employs preliminary action through extensive pre-selection and characterization of sporelings before establishing the cultivar. The inventors discovered unique plants in 2012, then conducted multiple cycles of spore propagation and reselection over several years, evaluating more than 10,000 individual plants to identify those retaining unique characteristics and capable of asexual reproduction. This preliminary selection and testing phase ensured that the final cultivar would maintain both improved traits and genetic stability.
2Productivity
If existing Asplenium antiquum cultivars are propagated asexually, then reproduction is possible, but mortality rates are high and vigor is reduced
Solution Approach 1:
The patent applies feedback through iterative cycles of spore propagation, selection, and evaluation. The inventors conducted multiple subsequent cycles of spore propagation and reselection, where each cycle provided feedback on which plants retained unique characteristics and exhibited successful asexual reproduction. This feedback loop allowed identification of the optimal genotype that achieved both high survival rates and vigorous growth, ultimately selecting one plant from a small group that demonstrated both traits.
Data Source
AI summary
A new and distinct Asplenium antiquum cultivar named ‘YUASPGIO’ which is characterized by a relatively fast rate of growth, improved cold hardiness and heat tolerance, an abundance of broad, dark green leaves with deeply incised and moderately undulating margins, and the stability of these characteristics from generation to generation.