Echeveria Dark Moon Cultivar Breeding for Stress Resistance
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Solution Overview
Problem
Echeveria cultivars face challenges with Summer Stress Syndrome, leading to 'shattering' and slow propagation, and lack distinctive deep violet-black foliage coloration, which affects their horticultural characteristics and commercial viability.
Innovation Solution
The Echeveria 'Dark Moon' cultivar, resulting from a cross between Echeveria 'PB' and 'AGA', exhibits compact, upright rosettes with deep violet-black foliage, enhanced resistance to Summer Stress Syndrome, and rapid growth, facilitating easier propagation and reduced leaf breakage during shipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional Echeveria cultivars are used for propagation, then propagation can be performed, but the propagation rate is slow and resistance to Summer Stress Syndrome is low
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic parameters that control growth rate and stress resistance. The new cultivar 'Dark Moon' exhibits altered physiological parameters including faster growth rate and enhanced resistance to Summer Stress Syndrome compared to parent plants, resolving the contradiction between propagation speed and stress resistance
Solution Approach 2:
The patent applies composite materials by creating a hybrid cultivar through cross-pollination of two different Echeveria parent plants. The composite genetic material from both parents combines desirable traits including improved propagation characteristics and enhanced stress resistance, achieving both high productivity and reliability
2Shape
If Echeveria cultivars with dark foliage color are used, then distinctive appearance is achieved, but susceptibility to Summer Stress Syndrome increases
Solution Approach 1:
The patent applies parameter changes by modifying the foliage color parameter to a distinctive deep violet-black hue while simultaneously altering stress resistance parameters through selective breeding. The new cultivar maintains the desirable dark foliage coloration while overcoming the susceptibility to Summer Stress Syndrome that plagues other dark-colored Echeveria cultivars
3Strength
If Echeveria rosettes with upright leaves are used, then shipping durability is improved, but propagation speed may be reduced
Solution Approach 1:
The patent applies parameter changes by modifying the morphological parameters of the rosette structure to achieve an upright leaf orientation that enhances shipping durability. Simultaneously, the breeding process optimizes growth rate parameters to ensure that propagation speed is not compromised, achieving both structural strength and reproductive productivity in the new cultivar
Data Source
AI summary
A new and distinct Echeveria cultivar named ‘Dark Moon’ is disclosed, characterized by concentric rosettes comprised of an abundance of deep violet black leaves. The new cultivar is robust growing, as compared to other existing dark Echeverias, enabling increased and faster propagation of the cultivar. The new cultivar ‘Dark Moon’ is more resistant to disease and “shattering” (as occurs with summer stress syndrome, a disease of some Echeverias, particularly the dark-leaved varieties). The new variety is an Echeveria, part of the Crassulaceae complex that includes Aeonium, Crassula, Graptopetalum, Pachyphytum, Sedum and others. Echeveria is a popular genus, typically produced as container plants for the patio or as landscape plants, as a variety of ornamental purposes.