Maize Inbred PH42V3 Breeding via Preliminary Action and Segmentation
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
A novel maize variety, PH42V3, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and improved agronomic characteristics, using genetic manipulation and transformation to introduce desired traits, and a process for producing hybrid seeds by crossing PH42V3 with another maize variety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then disease resistance and yield improvement can be achieved, but the breeding process takes six to twelve years and is highly time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-characterizing multiple maize inbreds with specific desirable traits (disease resistance, yield potential, stress tolerance) before hybridization. This allows breeders to select from pre-evaluated parents with known trait profiles, significantly reducing the time required for trait combination compared to traditional sequential breeding approaches.
Solution Approach 2:
The patent segments the breeding process by evaluating and characterizing individual inbred lines for specific traits independently, then combining them in hybrid crosses. This segmentation allows parallel evaluation of multiple parent lines with different trait combinations, accelerating the overall breeding timeline while maintaining reliability of trait expression.
2Productivity
If multiple desirable traits are combined in a single maize variety, then agronomic performance and yield are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies universality by developing maize inbreds that possess multiple desirable traits simultaneously (disease resistance, yield potential, stress tolerance). These multi-trait inbreds serve as universal parental sources that can be crossed with other complementary inbreds to produce hybrids with superior agronomic performance, reducing breeding program complexity by eliminating the need for separate breeding programs for each trait.
Solution Approach 2:
The patent changes parameters by systematically evaluating and selecting inbred lines based on multiple quantitative and qualitative traits simultaneously. This multi-parameter selection approach allows for the identification of parent lines that optimize combinations of traits, simplifying the breeding program by providing clear selection criteria rather than requiring separate programs for each trait.
3Stability of the object's composition
If stable and agronomically sound maize varieties are developed, then yield consistency across different environments is achieved, but the development process requires extensive testing and validation over multiple years
Solution Approach 1:
The patent applies preliminary action by conducting extensive preliminary evaluation and characterization of inbred parent lines across multiple environments and disease pressure conditions before hybridization. This pre-validation ensures that selected parents have demonstrated stable performance, reducing the time required for subsequent variety validation and accelerating the release of agronomically sound maize varieties.
Data Source
AI summary
A novel maize variety designated PH42V3 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH42V3 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH42V3 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 PH42V3 or a locus conversion of PH42V3 with another maize variety.