Maize Inbred PH1D5M Molecular Marker Selection

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Solution Overview

Problem

Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and yield improvement.

Innovation Solution

Development of a novel maize variety, PH1D5M, which is an inbred line with specific genetic traits that can be crossed with other maize plants to introduce desirable characteristics like drought resistance, disease resistance, and improved agronomic qualities through backcross conversion and transformation processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional plant breeding methods are used to combine desirable traits, then the breeding process can proceed with conventional techniques, but the ability to effectively combine multiple desirable traits such as disease resistance, drought tolerance, and uniformity is limited

Engineering Contradiction:
Improveability to combine desirable traitsVSAvoidbreeding efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent applies parameter changes by utilizing molecular marker technology to detect and select specific genetic parameters (DNA sequences associated with desirable traits) during the breeding process. This allows breeders to select plants with desired traits at the molecular level rather than waiting for phenotypic expression, thereby improving the ability to combine multiple traits while maintaining breeding efficiency

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces traditional mechanical/phenotypic selection methods with molecular marker-assisted selection. Instead of relying on visual observation and manual selection of plant characteristics, the invention uses DNA-based molecular markers to detect and select for desirable traits, substituting a biochemical detection system for conventional breeding approaches

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If selection is based on phenotypic traits alone, then the selection process is straightforward, but the precision and accuracy of trait selection is insufficient

Engineering Contradiction:
Improvesimplicity of selection processVSAvoidtrait selection accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent introduces molecular markers as an intermediary between the desired phenotypic traits and the selection process. These DNA markers serve as proxies or indicators for the actual traits of interest, allowing breeders to select for traits with high precision without directly observing complex phenotypic expressions. The molecular markers mediate the selection process by providing reliable genetic indicators

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9374961B1Maize inbred PH1D5M
Publication Date: 2016.06.28 PIONEER HI BREED INTERNATIONAL INC

AI summary

A novel maize variety designated PH1D5M and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1D5M with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PH1D5M or a locus conversion of PH1D5M with another maize variety.