Sedum Cultivar Breeding for Compact Growth and Early Flowering
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Solution Overview
Problem
There is a need for a new Sedum cultivar with distinct characteristics such as small deep red inflorescences, early flowering, and dark green narrow-leaved compact growth habit, which are not readily available in existing varieties.
Innovation Solution
The development of Sedum spurium 'SETZ0002', a cultivar resulting from a planned breeding program, combining traits from proprietary plants 'P6138-1V' and 'M9286.10-sib', exhibiting fixed characteristics through asexual reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a new Sedum cultivar is developed with distinct characteristics, then the variety uniqueness and horticultural value are improved, but the breeding complexity and time required are increased
Solution Approach 1:
The patent combines multiple desirable traits from different parent plants into a single cultivar 'SETZ0002'. The female parent 'P6138-1V' contributed smaller deep pink flowers and lighter green foliage, while the male parent 'M9286.10-sib' contributed reddish flowers and darker green foliage. The breeding program merged these characteristics to produce the new cultivar with small deep red inflorescences, dark green narrow-leaved compact growth habit, and early flowering, thereby achieving variety uniqueness through trait combination.
2Loss of time
If early flowering is achieved in the new cultivar, then the horticultural market value is improved, but the genetic stability and fixation of traits are worsened
Solution Approach 1:
The breeding program performed preliminary selection and stabilization of the early flowering trait during the hybridization process. The cultivar 'SETZ0002' was selected from the progeny of the cross between 'P6138-1V' and 'M9286.10-sib' specifically for its early flowering characteristic. Through successive generations of asexual reproduction and horticultural examination, the early flowering trait along with other characteristics has been firmly fixed and retained, demonstrating that preliminary selection during breeding can achieve both early flowering and genetic stability.
Data Source
AI summary
A new Sedum plant named ‘SETZ0002’ particularly distinguished by its compact, dense and well branched mounded habit, with dark glossy leaves and a reddish flower color.