Sedum 'Class Act' Breeding for Compact Upright Habit
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Solution Overview
Problem
There is a need for a new Sedum cultivar that combines unique characteristics such as large dark red-purple flowers, cream-colored buds, dark leaf margins, short stature, and a stiff, upright habit, which are not found in existing Sedum varieties like Sedum 'Mr. Goodbud' and Sedum spectabile 'Brilliant', while also being resistant to common pests and diseases affecting Sedum species.
Innovation Solution
The development of Sedum 'Class Act', a distinct cultivar resulting from an open-pollinated cross between Sedum spectabile 'Brilliant' and an unknown dark leaf Sedum telephium, propagated asexually through division and tissue culture, exhibiting consistent characteristics and improved traits like disease and pest resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If Sedum spectabile 'Brilliant' is used as seed parent, then flower size and color are improved, but plant stature becomes too tall and habit becomes less upright
Solution Approach 1:
The patent applies local quality by selecting specific genetic traits from each parent: large flowers and dark red-purple coloration from Sedum spectabile 'Brilliant', while short stature and stiff upright habit from Sedum telephium. This selective trait combination creates a plant with locally optimized characteristics - large flowers without excessive height.
2Length of moving object
If Sedum telephium dark leaf is used as pollen parent, then plant stature is reduced and habit becomes more upright, but flower size and color intensity are reduced
Solution Approach 1:
The patent merges beneficial traits from both parent species through controlled breeding. The hybrid combines the compact stature and upright habit of Sedum telephium with the large flower size and dark red-purple coloration of Sedum spectabile 'Brilliant', achieving a synthesis that exceeds either parent in overall ornamental value.
3Ease of manufacture
If common Sedum varieties are used, then ease of propagation is maintained, but resistance to root rots, mealybugs, scale, slugs, and snails is insufficient
Solution Approach 1:
The patent creates a composite genetic structure by hybridizing two different Sedum species. This genetic composite provides enhanced resistance to multiple pests and diseases (root rots, mealybugs, scale, slugs, and snails) while maintaining the ease of asexual propagation through division and tissue culture characteristic of Sedum species.
Data Source
AI summary
A new and distinct hybrid of Sedum plant substantially as shown and described, with deep red purple flowers with prominent cream colored bud, green leaves edged red, and a short, stiff upright habit.