1PHVF50 Maize Inbred Variety Through Backcross Trait Introgression
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.
Innovation Solution
The development of a novel maize variety, 1PHVF50, with introgressed traits through backcross conversion, genetic manipulation, and transformation, incorporating heritable traits like male sterility, disease resistance, and improved agronomic characteristics, along with processes for producing hybrid seeds and plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then desirable traits such as disease resistance, drought tolerance, and high yield can be combined, but the process is time-consuming and takes 6-12 years from first cross to finished seed delivery
Solution Approach 1:
The patent applies preliminary action by using doubled haploid technology to create inbred lines in a single generation rather than requiring multiple generations of selfing. This preliminary creation of homozygous lines accelerates the breeding process while maintaining the stability and reliability of the final variety, reducing the overall breeding cycle from 6-12 years to a significantly shorter duration.
Solution Approach 2:
The patent changes the temporal parameter of the breeding process by utilizing molecular markers and genomic selection to evaluate and select lines at earlier stages than traditional methods. This allows for accelerated selection and evaluation cycles, reducing the time required to develop stable, high-yielding varieties while maintaining breeding reliability.
2Reliability
If multiple desirable traits are combined in a single variety through traditional breeding, then agronomic performance is improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into distinct modular components: (1) creation of inbred lines using doubled haploids, (2) evaluation of inbred lines using molecular markers, (3) selection of promising lines, and (4) development of hybrid varieties. This segmentation allows each component to be optimized independently, reducing overall program complexity while maintaining the ability to combine multiple desirable traits.
Solution Approach 2:
The patent uses molecular markers as intermediaries between the breeding objectives and the actual breeding process. These markers serve as mediators that allow for precise tracking and selection of lines with desired traits, simplifying the complexity of combining multiple traits by providing objective, measurable criteria for selection at each stage.
3Stability of the object's composition
If inbred lines are developed through multiple generations of selfing, then homozygosity is achieved, but the process requires repeated self-pollination and selection cycles
Solution Approach 1:
The patent applies preliminary action by using doubled haploid technology to directly produce homozygous inbred lines in a single generation rather than requiring multiple generations of selfing. This preliminary creation of homozygous lines achieves the desired genetic stability (homozygosity) while dramatically increasing the development rate from years to a single generation, thus resolving the contradiction between stability and productivity.
Data Source
AI summary
A novel maize variety designated 1PHVF50 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PHVF50 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PHVF50 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 1PHVF50 or a locus conversion of 1PHVF50 with another maize variety.