Maize Inbred PH2G46 Breeding Acceleration via Preliminary Action
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process that requires precise planning and efficient resource use, aiming to combine desirable traits such as disease resistance, drought tolerance, and high yield, while maintaining stability across various conditions and environments.
Innovation Solution
The introduction of the novel maize variety PH2G46, which involves crossing with another maize plant to introduce desired traits through backcross conversion, genetic manipulation, and transformation, incorporating cytoplasmic or nuclear factors for male sterility and other beneficial characteristics, such as herbicide tolerance and insect resistance, to enhance agronomic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to combine desirable traits, then disease resistance, drought tolerance, and high yield can be achieved, but the development process takes 6-12 years and requires significant resources
Solution Approach 1:
The patent employs preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance, yield potential) before combining them. The inbred line PH2G46 was developed through systematic selection and characterization of parental lines with known trait profiles, allowing breeders to make informed crossing decisions that accelerate the breeding process while maintaining trait reliability
Solution Approach 2:
The breeding process is segmented into distinct phases: developing foundational inbred lines with specific traits, testing their combining ability, and then deploying them in hybrid combinations. This segmentation allows parallel development of multiple inbred lines with different trait profiles, reducing overall program time while maintaining trait reliability through systematic evaluation
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance is improved, but the breeding program complexity and resource requirements increase
Solution Approach 1:
The patent applies local quality by developing inbred lines that are specialized for specific functions (disease resistance, drought tolerance, yield) and then combining them in hybrid formulations tailored to specific environmental conditions and market requirements. This allows optimization of trait combinations for different applications without requiring all hybrids to contain all traits, reducing program complexity while maintaining high productivity where needed
Solution Approach 2:
The inbred line PH2G46 exhibits multi-functionality by demonstrating strong combining ability across multiple trait categories (yield, disease resistance, drought tolerance) when paired with different complementary inbreds. This universal performance reduces breeding program complexity by allowing a single well-characterized inbred line to serve multiple hybrid development goals
3Stability of the object's composition
If inbred lines are developed through systematic selection and characterization, then trait stability across environments is improved, but the initial development time and resource investment increase
Solution Approach 1:
The patent implements preliminary action by conducting extensive field testing and characterization of inbred lines across multiple environments and generations before releasing them for hybrid development. Inbred line PH2G46 underwent systematic evaluation for trait stability, combining ability, and adaptability, ensuring that the time investment during development results in long-term stability and reduced need for future modifications
Data Source
AI summary
A novel maize variety designated PH2G46 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2G46 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2G46 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH2G46 or a locus conversion of PH2G46 with another maize variety.