Maize Inbred PH40V9 Trait Introgression
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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 single variety that is agronomically sound across different conditions and environments.
Innovation Solution
The introduction of the novel maize variety PH40V9, which involves crossing with other maize plants to introduce specific traits like male sterility, herbicide tolerance, and disease resistance through backcross conversion and genetic transformation, along with processes for producing hybrid maize seeds and plants that ensure uniformity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to combine desirable traits, then the variety achieves agronomic soundness and stability, but the development time becomes excessively long (six to twelve years)
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance, yield potential) before combining them. The inbred PH40V9 is developed with predetermined characteristics that can be systematically combined with other pre-characterized inbreds, reducing the trial-and-error time in traditional breeding while maintaining agronomic reliability through controlled crosses and systematic evaluation
2Productivity
If multiple desirable traits are combined in a single variety, then the variety achieves maximal yield across different conditions, but the breeding process complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct stages: developing individual inbred lines with specific traits (PH40V9 with disease resistance and drought tolerance), then systematically combining them through controlled crosses. This segmented approach allows each inbred to be optimized for particular traits before combination, achieving maximal yield across different conditions while managing breeding complexity through structured, modular development
Solution Approach 2:
The patent applies universality by developing inbred PH40V9 with multiple desirable traits (disease resistance, drought tolerance, yield potential) that make it universally applicable across different environmental conditions. This multi-functional inbred can be combined with other inbreds to create hybrids that maintain high productivity across varying conditions, reducing the need for condition-specific variety development
3Object-affected harmful factors
If traditional breeding methods are used to achieve disease and drought resistance, then the variety gains stress tolerance, but the time to maturity is extended
Solution Approach 1:
The patent applies copying by utilizing pre-existing inbred lines that have already been selected for stress tolerance traits. Instead of developing stress resistance from scratch through lengthy breeding processes, the invention copies proven resistant traits from established inbreds into PH40V9 through controlled crosses, achieving disease and drought resistance while maintaining a shorter, more efficient development timeline
Data Source
AI summary
A novel maize variety designated PH40V9 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH40V9 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH40V9 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 PH40V9 or a locus conversion of PH40V9 with another maize variety.