Sedum Cultivar Selection for Compact Growth and Dark Foliage
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Solution Overview
Problem
There is a need for new cultivars of Sedum plants that exhibit unique characteristics such as short plant height, sturdy habit, floriferous blooming, and distinctive foliage and flower colors, which are not adequately addressed by existing Sedum cultivars like 'Mojave Jewels Ruby', 'Cherry Tart', and 'PPC093'.
Innovation Solution
The development of a new Sedum cultivar, 'PPF095', which features a short plant height, sturdy habit, red flowers, and slightly glossy, dark grey-purple-black foliage, achieved through asexual propagation by tissue culture and stem cuttings, distinguishing it from other cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Sedum cultivars like 'Mojave Jewels Ruby', 'Cherry Tart', and 'PPC093' are used, then certain characteristics such as flower color or plant height are achieved, but the desired unique combination of short plant height, sturdy habit, floriferous blooming, and distinctive dark grey-purple-black foliage is not achieved
Solution Approach 1:
The breeding program segmented the selection process into multiple stages: initial seed collection from open pollination, seedling evaluation, and selection of unique plants. This systematic segmentation allowed for the identification and stabilization of the specific trait combination in 'PPF095' that distinguishes it from existing cultivars.
Solution Approach 2:
The invention achieves the desired unique combination of parameters (short plant height, sturdy habit, floriferous blooming, dark grey-purple-black foliage) by selecting and stabilizing specific parameter values through asexual propagation. Tissue culture and stem cutting methods maintain these parameter values consistently across generations, ensuring characteristic stability while achieving the unique trait combination.
2Stability of the object's composition
If asexual propagation by tissue culture is used, then stable and reproducible characteristics are achieved, but the complexity of the propagation process increases
Solution Approach 1:
The patent employs tissue culture as an intermediary propagation method that mediates between the parent plant and the propagated offspring. This intermediary process ensures that the unique combination of traits in 'PPF095' is accurately transmitted and stabilized across generations, achieving characteristic stability while providing a controlled propagation system.
Solution Approach 2:
Asexual propagation by tissue culture and stem cuttings creates exact biological copies of the selected plant. This copying mechanism ensures that the unique combination of short plant height, sturdy habit, floriferous blooming, and dark grey-purple-black foliage is reproduced true to type in successive generations, maintaining characteristic stability.
Data Source
AI summary
A new cultivar of Sedum plant named ‘PPF095’ that is characterized by its short plant height, its sturdy plant habit, its floriferous blooming habit, its flowers that are red in color, and its slightly glossy, dark grey-purple-black color foliage.