St. Augustinegrass MSA-31 Shade Tolerance and Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a lack of high-quality St. Augustinegrass cultivars adapted for warm weather climates, particularly in southern regions, which are resistant to excessive shade and disease, and maintain high turf quality and density.
Innovation Solution
The development of the 'MSA-31' cultivar, a perennial Stenotaphrum secundatum variety, which is vegetatively propagated and exhibits excellent shade tolerance, high turf density, fine leaf texture, and superior performance in warm weather conditions, distinguishing it from other St. Augustinegrass cultivars through its unique pedigree and asexual propagation method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional St. Augustinegrass varieties are used in warm weather climates, then they can provide basic turf coverage, but they are weakened by excessive shade and disease injury, resulting in poor turf quality
Solution Approach 1:
The patent applies parameter changes by developing a new cultivar with altered genetic parameters that confer superior shade tolerance and disease resistance. The 'MSA-31' cultivar exhibits modified physiological parameters including enhanced photosynthetic efficiency under low light conditions and improved immune response to pathogens, directly resolving the contradiction between maintaining turf quality and resisting harmful factors in shaded environments
Solution Approach 2:
The invention employs composite materials principles by creating a hybrid genotype that combines desirable traits from multiple parental lines. The 'MSA-31' cultivar is a composite of genetic material selected for specific shade tolerance and disease resistance genes, merging multiple beneficial characteristics into a single superior variety that outperforms conventional pure-line varieties
2Reliability
If conventional St. Augustinegrass varieties are planted in southern climates, then they can establish turf, but they do not maintain high turf quality and density under warm weather conditions
Solution Approach 1:
The patent utilizes parameter changes by selecting and propagating plants with optimized physiological parameters for warm climate performance. The 'MSA-31' cultivar exhibits modified thermal tolerance parameters, enhanced photosynthetic rates at elevated temperatures, and improved water use efficiency, enabling it to maintain high turf quality where conventional varieties deteriorate under warm weather stress
3Quantity of substance
If other St. Augustinegrass cultivars are grown in shaded areas, then they can provide some ground cover, but they are weakened and fail to maintain dense, uniform turf
Solution Approach 1:
The invention applies parameter changes by developing a cultivar with altered light response parameters. The 'MSA-31' cultivar demonstrates enhanced photosynthetic efficiency at low light intensities, optimized chlorophyll content for maximum light capture, and modified carbon allocation patterns that prioritize tiller production and density under shaded conditions, directly addressing the contradiction between maintaining turf density and adapting to low illumination
Data Source
AI summary
St. Augustinegrass plant ‘MSA-31’ is a new and distinct variety of perennial St. Augustinegrass cultivar, characterized by its short and narrow leaf blades, fine leaf texture, short internode length and diameter, and superior turf quality and particularly turf density when grown under shade or dense shade. ‘MSA-31’ is also distinguished by its genetic color and fall and winter color characteristics.