Maize Variety 36H43 Breeding via Molecular Marker Selection
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a single hybrid, while maintaining uniformity and stability necessary for commercial crops.
Innovation Solution
The development of the maize variety 36H43, produced by crossing two proprietary Pioneer Hi-Bred International inbred varieties, which incorporates traits like drought resistance, disease resistance, and high yield through backcross conversion and transformation processes, allowing for the introgression of new traits and the creation of derived varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the time to develop new varieties is extended and uniformity may be compromised
Solution Approach 1:
The patent applies parameter changes by utilizing molecular marker technology to accelerate the breeding process. Specific molecular markers (e.g., SSR markers like umc1163, umc1224) are used to track and select for desirable traits such as disease resistance and drought tolerance, enabling breeders to identify desired genetic combinations much faster than traditional phenotypic selection methods, thereby reducing development time while maintaining trait reliability
2Productivity
If multiple desirable traits are combined in a single hybrid, then yield and stress tolerance improve, but maintaining uniformity of plant characteristics becomes more difficult
Solution Approach 1:
The patent applies segmentation by dividing the complex trait combination process into manageable genetic components. Molecular markers are used to independently track and select for specific traits (disease resistance, drought tolerance, yield components) separately, allowing breeders to combine multiple desirable traits while maintaining uniformity through precise genetic selection rather than relying on phenotypic uniformity alone
3Adaptability or versatility
If backcross conversion and transformation processes are used to introgress new traits, then adaptability to environmental conditions improves, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies mechanics substitution by replacing traditional mechanical/phenotypic selection methods with molecular marker-based selection. Instead of visually assessing and selecting plants based on physical characteristics, the patent uses DNA-level molecular markers to identify and select for desirable traits, thereby managing the complexity of backcross conversion and transformation processes through biochemical analysis rather than complex phenotypic evaluation
Data Source
AI summary
A novel maize variety designated 36H43 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize varieties. Methods for producing a maize plant that comprises crossing maize variety 36H43 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 36H43 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety 36H43, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety 36H43. This invention further relates to methods for producing maize varieties derived from maize variety 36H43 and to the maize varieties derived by the use of those methods.