Maize Inbred PH2G5Z Trait Introgression and Breeding Acceleration

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Solution Overview

Problem

The development of new maize varieties is a time-consuming process that takes six to twelve years, and breeders aim to create stable, high-yielding varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.

Innovation Solution

The introduction of the novel maize variety PH2G5Z, 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 processes for producing hybrid maize seeds and plants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional maize breeding methods are used to develop new varieties with desirable traits, then the varieties achieve stability and high yield, but the development process takes six to twelve years

Engineering Contradiction:
Improvevariety stabilityVSAvoidbreeding development time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, yield potential, adaptability) before combining them in hybrid development. This advance preparation of parental lines with known characteristics accelerates the breeding process while maintaining variety stability, reducing the 6-12 year development timeline through systematic pre-screening and trait verification

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If multiple desirable traits are combined in a single maize variety, then the variety achieves maximal yield and adaptability, but the breeding process complexity increases

Engineering Contradiction:
Improvetrait combinationVSAvoidbreeding process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the complex breeding process into distinct stages: selecting parental inbreds with specific traits, performing controlled crosses, evaluating F1 hybrids for heterosis, and systematically testing for trait expression. This segmented approach to multi-trait variety development manages complexity through structured, stepwise progression while achieving comprehensive trait combination in the final variety

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9992951B1Maize inbred PH2G5Z
Publication Date: 2018.06.12 PIONEER HI BREED INTERNATIONAL INC

AI summary

A novel maize variety designated PH2G5Z and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2G5Z with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2G5Z 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 PH2G5Z or a locus conversion of PH2G5Z with another maize variety.