Inbred Corn Line DDM01 Breeding via Molecular Markers
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Solution Overview
Problem
The development of new inbred corn lines is a slow and costly process that requires expertise, and existing inbred parent corn lines lose commercial competitiveness over time, necessitating the creation of improved germplasm with enhanced traits for yield, disease resistance, and environmental adaptability.
Innovation Solution
The introduction of the inbred corn line DDM01, which is a yellow dent corn line with specific physiological and morphological characteristics, and methods for producing and breeding DDM01-derived corn plants, including self-pollination, sib-pollination, and hybrid production, along with techniques for enhancing seed resistance to stress conditions and disease using agricultural chemicals and genetic markers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional inbreeding techniques are used to develop new inbred corn lines, then genetic uniformity and homozygosity are achieved, but the process is slow and costly
Solution Approach 1:
The patent applies preliminary action by using molecular marker technology to predict and select for desirable traits before completing traditional multi-generation inbreeding. This allows breeders to identify promising lines earlier in the breeding process, reducing the time required to develop new inbred corn lines while maintaining genetic uniformity through targeted selection.
Solution Approach 2:
The patent replaces the mechanical/time-intensive process of visual phenotypic selection with molecular marker-based genetic analysis. By using DNA markers to track inheritance and predict trait expression, the system substitutes biochemical analysis for traditional mechanical breeding methods, significantly accelerating the development of genetically uniform inbred lines.
2Reliability
If existing inbred parent corn lines are used repeatedly, then breeding expertise is maintained, but commercial competitiveness is lost over time
Solution Approach 1:
The patent implements feedback through molecular marker analysis that provides real-time information on genetic composition and trait inheritance. This feedback mechanism allows breeders to continuously monitor and adjust breeding programs, ensuring that new inbred lines maintain the reliability and consistency of established lines while introducing genetic variation to restore commercial competitiveness.
Solution Approach 2:
The patent applies parameter changes by utilizing molecular marker data to identify and select for novel genetic combinations that differ from traditional inbred lines. By changing the selection parameters from phenotypic to genotypic markers, the system can discover and exploit previously unrecognized genetic variation, thereby restoring commercial competitiveness while maintaining breeding reliability.
3Stability of the object's composition
If self-pollination and sib-pollination are used to produce inbred lines, then homozygosity increases, but vigor decreases
Solution Approach 1:
The patent applies preliminary action by using molecular markers to predict which inbred lines will maintain adequate vigor despite homozygosity. This allows selection of lines that achieve the necessary genetic uniformity for inbreeding while preserving sufficient heterotic potential or compensating genetic architectures that maintain plant vigor.
Solution Approach 2:
The patent replaces traditional visual assessment of plant vigor with molecular marker-based predictions of genetic performance. This substitution enables the selection of homozygous inbred lines that are predicted to maintain vigor through identified genetic mechanisms, rather than relying solely on phenotypic observation after vigor loss occurs.
Data Source
AI summary
An inbred corn line, designated DDM01, the plants and seeds of the inbred corn line DDM01, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line DDM01 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line DDM01 with another corn line or plant and to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic corn plants produced by that method. This invention also relates to inbred corn lines derived from inbred corn line DDM01, to methods for producing other inbred corn lines derived from inbred corn line DDM01 and to the inbred corn lines derived by the use of those methods.