1PCDF91 Maize Inbred for Disease- and Drought-Resistant Hybrids

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Solution Overview

Problem

The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.

Innovation Solution

The development of the novel maize variety 1PCDF91, which incorporates specific traits like male sterility, disease resistance, and drought tolerance through backcross conversion, genetic manipulation, and transformation, along with processes for crossing and producing hybrid seeds, ensuring a homogeneous seed population and introducing heritable traits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional maize variety development processes are used to combine desirable traits, then the maize varieties achieve stable and high-yielding characteristics, but the development process takes six to twelve years which is excessively time-consuming

Engineering Contradiction:
Improvestability of maize varietyVSAvoidvariety 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, drought tolerance, yield potential) before hybrid development. The inbred line 1PCDF91 has been预先 developed with confirmed agronomic characteristics, allowing faster hybrid creation without sacrificing stability. This preliminary preparation of genetic material accelerates the overall variety development timeline while maintaining reliability.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If multiple desirable traits are combined in a single maize variety through traditional breeding, then the maize achieves maximal yield and agronomic soundness, but the process becomes extremely complex and time-consuming

Engineering Contradiction:
Improveagronomic performanceVSAvoidbreeding process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the complex breeding process into distinct phases: (1) development of standardized inbred lines with specific trait combinations, (2) evaluation and selection of promising inbreds, and (3) hybrid creation and testing. By dividing the overall variety development into these manageable segments, the patent reduces process complexity while achieving comprehensive trait integration in the final hybrid varieties.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent systematically varies and evaluates multiple agronomic parameters (yield, disease resistance, drought tolerance, maturity, plant height) across different inbred lines and hybrid combinations. By changing and optimizing these parameters through controlled breeding experiments, the patent achieves superior agronomic performance without becoming lost in excessive complexity, as each parameter can be independently tracked and optimized.

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If traditional maize breeding processes are used to develop new varieties, then desirable traits are combined in stable genetic lines, but the process requires numerous steps taking six to twelve years which reduces productivity

Engineering Contradiction:
Improvegenetic stabilityVSAvoidvariety development rate
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent uses inbred lines as stable genetic copies that can be repeatedly crossed with different partners to produce multiple hybrid varieties. The inbred line 1PCDF91 serves as a standardized genetic template that maintains stability across numerous breeding operations. This copying approach allows parallel development of multiple hybrids from a single proven inbred, dramatically increasing variety development productivity while preserving genetic stability through the use of established, characterized inbred lines.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS12433227B1Maize inbred 1PCDF91
Publication Date: 2025.10.07 PIONEER HI BREED INTERNATIONAL INC
  • US12433227B1 patent drawing

AI summary

A novel maize variety designated 1PCDF91 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PCDF91 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PCDF91 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 1PCDF91 or a locus conversion of 1PCDF91 with another maize variety.