Carex pensylvanica Straw Hat Cultivar Floret Size
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Solution Overview
Problem
There is a lack of a stable and showier form of Carex pensylvanica with larger florets, which is not previously available in the market or disclosed, limiting options for grass breeding programs seeking enhanced floral displays.
Innovation Solution
A new cultivar named 'Straw Hat' with larger florets, measuring 10 mm wide, emerging a week or two earlier than the species, and featuring larger achenes, providing a unique and stable showier floral display, propagated through asexual vegetative division.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional Carex pensylvanica is used, then the plant maintains typical species characteristics, but the florets remain small (2-3 mm wide) and the floral display is not showy
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a mutant plant with altered floret size (10 mm wide compared to the species' 2-3 mm). This involves changing the physical parameter of floret dimensions while maintaining the plant's biological stability through vegetative propagation, resolving the contradiction between achieving larger florets and maintaining genetic stability.
2Stability of the object's composition
If vegetative division propagation is used, then the plant maintains uniformity and stability in reproduction, but the propagation process is time-consuming and labor-intensive
Solution Approach 1:
The patent employs copying through vegetative division, where identical genetic copies of the superior mutant plant are produced asexually. This ensures reproduction uniformity and stability while efficiently propagating the desired large-floret characteristics throughout the population, addressing both the stability and productivity requirements.
3Productivity
If seed propagation is used, then large-scale reproduction is faster, but genetic variation occurs and the unique large-floret characteristics may not be preserved
Solution Approach 1:
The patent utilizes self-service through vegetative propagation, where the plant reproduces itself asexually to maintain exact genetic fidelity. This self-propagation method ensures that the unique large-floret characteristics are preserved consistently across generations without introducing genetic variation, resolving the contradiction between reproduction rate and genetic consistency.
Data Source
AI summary
A new, distinct Carex pensylvanica plant as illustrated and described characterized larger florets giving the plant a showier floral display to be unique and stable.