Zoysia japonica Genotype BA-189 Accelerated Coverage
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Solution Overview
Problem
There is a need for a distinct and stable genotype of Zoysia japonica Stued that offers improved floral morphology, leaf and stem characteristics, tissue color, and growth rate compared to existing varieties like 'Meyer', with specific advantages in disease and insect resistance.
Innovation Solution
The new genotype 'BA-189', also known as 'Ultimate Zoysia', exhibits phenotypic stability and uniformity through asexual propagation, showcasing enhanced peduncle length, glume length, leaf width, and internode density, resulting in faster growth and coverage, while maintaining similar disease and insect resistance to 'Meyer'.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the inflorescence height is increased through extended peduncle length, then the floral morphology is improved, but the overall plant structure becomes more complex
Solution Approach 1:
The patent applies local quality by specifically extending the peduncle length (from 34.25mm to 48.70mm) while keeping other plant structures relatively unchanged. This targeted modification improves inflorescence height without requiring comprehensive structural changes throughout the entire plant, thereby resolving the contradiction between shape improvement and structural complexity.
2Productivity
If the leaf width is decreased to achieve denser internode packing, then the growth rate and coverage are improved, but the leaf surface area is reduced
Solution Approach 1:
The patent applies parameter changes by modifying the leaf width parameter (from 4.02mm to 3.00mm) and internode length parameter (from 32.68mm to 27.37mm) simultaneously. This coordinated parameter adjustment achieves denser internode packing and faster coverage while managing the reduction in individual leaf surface area, resolving the contradiction between productivity and surface area.
3Quantity of substance
If the stolon and rhizome production is increased to enhance propagation capability, then the reproductive output is improved, but the resource allocation for vegetative growth may be reduced
Solution Approach 1:
The patent applies dynamics by creating a balanced system where the plant can dynamically allocate resources between reproductive structures (stolons and rhizomes) and vegetative growth. The modified genotype maintains both enhanced stolon/rhizome production (13.25 vs 11.25) and improved vegetative growth rate, resolving the contradiction through dynamic resource allocation rather than fixed trade-offs.
Data Source
AI summary
A newly discovered, and asexually reproduced genotype of Zoysiagrass with a distinct set of foliar, floral and agronomic traits.