Inbred Corn Line CC1 Breeding Contradictions

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Solution Overview

Problem

The development of new corn inbred lines is a time-consuming and unpredictable process due to the complexity of inheritance and environmental factors, making it challenging to identify genetically superior plants with desirable traits such as disease resistance, drought tolerance, and high yield, which requires extensive research and resources.

Innovation Solution

The introduction of the inbred corn line CC1, which is a yellow dent corn with superior characteristics, including high yield, disease tolerance, and drought resistance, along with methods for producing hybrid seeds and plants using self-pollination, backcrossing, and tissue culture techniques to maintain homozygosity and introduce transgenes for enhanced traits like male sterility, herbicide resistance, and improved nutritional quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional breeding methods are used to develop new corn inbred lines, then genetic diversity and adaptability are improved, but the process becomes time-consuming and unpredictable

Engineering Contradiction:
Improvegenetic diversityVSAvoidbreeding process time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-selecting and characterizing specific inbred lines (such as CC1 with its documented traits including 70cm ear height, 14-16 kernel rows, and disease resistance) before hybridization. This pre-characterization allows breeders to predict hybrid performance more accurately, reducing the time needed for field testing while maintaining genetic diversity and adaptability.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If extensive field testing and replicated evaluations are conducted to identify superior plants, then measurement precision is improved, but resource expenditure increases

Engineering Contradiction:
Improvegenetic worth estimationVSAvoidresearch resources
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent employs copying by creating and utilizing detailed phenotypic and genotypic records of inbred lines (such as the comprehensive characterization of CC1 including plant height, ear characteristics, kernel properties, and disease resistance). These documented profiles serve as reusable references that allow breeders to predict hybrid performance without conducting extensive new field trials, thereby reducing resource expenditure while maintaining measurement precision.

Inventive Principle:
Principle #26Copying

3Stability of the object's composition

If conventional breeding procedures are used without DNA level control, then natural genetic variation is maintained, but selection efficiency decreases

Engineering Contradiction:
Improvenatural genetic variationVSAvoidselection efficiency
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent applies feedback by integrating molecular marker analysis and DNA-level characterization into the breeding process. By using genetic markers to track inheritance patterns and predict hybrid performance, breeders can make more informed selection decisions, improving selection efficiency while maintaining natural genetic variation through controlled breeding designs that preserve beneficial alleles.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS7858853B2Inbred corn line CC1
Publication Date: 2010.12.28 KWS SAAT SE & CO KGAA

AI summary

An inbred corn line, designated CC1, is disclosed. The invention relates to the seeds of inbred corn line CC1, to the plants and plant parts of inbred corn line CC1 and to methods for producing a corn plant, either inbred or hybrid, by crossing the inbred line CC1 with itself or another corn line. The invention further relates to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic plants produced by that method and to methods for producing other inbred corn lines derived from the inbred CC1.