Pachyveria Cultivar TSAECH1702 Foliage Stability
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Solution Overview
Problem
There is a need for a new and distinct Pachyveria cultivar that exhibits unique growth and foliage characteristics, which are stable and true to type through asexual reproduction, and can thrive under varying environmental conditions.
Innovation Solution
The development of the Pachyveria hybrid 'TSAECH1702', resulting from the controlled pollination of Pachyphytum glutinacaule and Echeveria hookeri, which displays long and narrow succulent foliage in a basal rosette, with specific coloration and curvature patterns, and is propagated through leaf cuttings, demonstrating moderate growth rate and tolerance to different environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new Pachyveria cultivar is developed through controlled pollination of Pachyphytum glutinacaule and Echeveria hookeri, then unique growth and foliage characteristics are achieved, but stability and truth-to-type through asexual reproduction must be confirmed
Solution Approach 1:
The patent applies preliminary action by conducting multiple generations of asexual reproduction (four generations of leaf cutting propagation) before commercialization to pre-confirm the stability and truth-to-type of the cultivar. This preliminary verification ensures that the unique characteristics observed in the hybrid seedling are reliably inherited through vegetative propagation, resolving the contradiction between achieving unique characteristics and ensuring reproductive stability.
2Adaptability or versatility
If the cultivar is observed under varying environmental conditions, then phenotype variation may occur, but genotype remains constant
Solution Approach 1:
The patent applies local quality by documenting and accepting that different parts of the plant (juvenile foliage at the center versus mature foliage at outer whorls) exhibit different color characteristics under the same environmental conditions. The juvenile foliage shows greyed-green with white to light blue hue while mature foliage shows yellow-green with blue hue. This principle resolves the contradiction by recognizing that phenotype variation across different locations/times on the plant is normal and acceptable while the overall genotype remains stable.
3Productivity
If the cultivar is selected for commercialization, then commercial viability is achieved, but distinctness and stability must be first confirmed
Solution Approach 1:
The patent applies preliminary action by completing the distinctness and stability confirmation process (through four generations of propagation and detailed documentation of characteristics) before selecting the cultivar for commercialization in autumn 2015. This preliminary verification ensures that the cultivar meets all necessary criteria for commercial production, resolving the contradiction between achieving commercial viability and maintaining precision in characteristic confirmation.
Data Source
AI summary
A new and distinct Pachyveria plant Pachyphytum glutinacaule x Echeveria hookeri, named ‘TSAECH1702’ which is characterized by long and narrow succulent foliage with an upwardly curved aspect and an upright attitude, light greyed-green juvenile foliage with a white to light blue hue at and near the center of the rosette, foliage which becomes progressively suffused with yellow-green with age, mature foliage towards the outermost whorls of the rosette which is generally colored yellow-green with a blue hue, as well as the stability of these characteristics from generation to generation.