Maize Inbred PH251H Trait Combination via Pre-characterized Lines
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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 PH251H, which involves crossing with another maize plant to introduce specific traits like male sterility, herbicide tolerance, and disease resistance through backcross conversion and genetic transformation, along with the use of cytoplasmic or nuclear factors to control self-pollination, and the production of hybrid seeds and plants with enhanced agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional maize breeding processes are used to combine desirable traits, then trait combination is achieved, but the development time becomes excessively long (6-12 years)
Solution Approach 1:
The patent employs preliminary action through the use of pre-characterized inbred lines with known genetic backgrounds and predetermined traits. By selecting from a library of inbreds with documented characteristics, breeders can predictably combine desired traits without undergoing lengthy traditional breeding cycles, thus reducing development time while maintaining trait combination capability.
2Stability of the object's composition
If multiple breeding steps are performed to ensure stability across environments, then trait consistency is improved, but process complexity increases
Solution Approach 1:
The patent utilizes copying by creating and maintaining a standardized library of inbred lines with well-documented and replicated genetic characteristics. These inbreds serve as reusable genetic building blocks that can be consistently copied and combined across different breeding programs, ensuring trait consistency while simplifying the breeding process through standardized procedures.
3Adaptability or versatility
If resource allocation is spread across multiple breeding programs, then variety diversity is enhanced, but resource efficiency decreases
Solution Approach 1:
The patent applies universality by developing a core library of inbred lines that can serve multiple functions across different breeding programs and target traits. These universal inbreds can be combined with various other lines to create diverse hybrids for different environmental conditions and production goals, thereby enhancing variety diversity while improving resource efficiency through reusable genetic materials.
Data Source
AI summary
A novel maize variety designated PH251H and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH251H with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH251H 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 PH251H or a locus conversion of PH251H with another maize variety.