Maize Inbred PH4DCG Trait 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 single variety that is agronomically sound across different conditions and environments.
Innovation Solution
A novel maize variety, PH4DCG, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of stable, high-yielding hybrids with improved agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
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 development process takes six to twelve years
Solution Approach 1:
The patent segments the variety development process by using pre-developed inbred lines (PH4DCG and other compatible inbreds) that already possess specific desirable traits. Breeders can directly combine these pre-segmented genetic components through controlled crosses rather than developing each trait separately through lengthy traditional breeding, significantly reducing the time required to create new varieties with multiple desirable traits
Solution Approach 2:
The patent applies preliminary action by maintaining a library of pre-developed inbred lines with known and verified traits (disease resistance, drought tolerance, high yield). These inbreds have undergone extensive testing and characterization beforehand, allowing breeders to immediately utilize proven genetic material without repeating the lengthy development and testing phases for each new variety
2Adaptability or versatility
If multiple desirable traits are combined in a single maize variety, then the variety becomes more agronomically sound across different conditions, but the breeding process becomes more complex
Solution Approach 1:
The patent creates universal inbred lines like PH4DCG that serve multiple functions: they provide disease resistance, drought tolerance, high yield potential, and good combining ability with other inbreds. This multi-functional genetic base simplifies the breeding process because a single inbred can contribute multiple desirable traits simultaneously, reducing the complexity of combining multiple separate trait sources
Solution Approach 2:
The patent uses copying by maintaining and propagating proven inbred lines with known trait combinations. Once an inbred line like PH4DCG is developed and verified to possess multiple desirable traits, it can be copied and used repeatedly as a parent in various hybrid combinations, avoiding the need to re-develop the same trait组合 from scratch for each new variety
Data Source
AI summary
A novel maize variety designated PH4DCG and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4DCG with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4DCG 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 PH4DCG or a locus conversion of PH4DCG with another maize variety.