Inbred Corn Line SLM16 Breeding and Genetic Uniformity
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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 need for improved germplasm with enhanced yield, disease resistance, and trait technologies.
Innovation Solution
The introduction of the inbred corn line SLM16, which is a yellow dent corn line with specific physiological and morphological characteristics, and methods for producing and breeding SLM16-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
1Manufacturing precision
If traditional inbreeding methods are used to develop new inbred corn lines, then genetic uniformity and homozygosity are improved, but the process is slow and costly, and commercial competitiveness is lost over time
Solution Approach 1:
The patent applies parameter changes by utilizing molecular markers and genomic selection to accelerate the traditional inbreeding process. Instead of relying solely on phenotypic selection over multiple generations, the invention uses genetic parameter analysis (marker-assisted selection) to identify and select superior lines more rapidly, thereby reducing development time while maintaining genetic uniformity.
Solution Approach 2:
The invention replaces the mechanical/physical process of traditional field-based selection and manual pollination with molecular and genetic tools. By using DNA markers, genomic data, and computer-based selection systems, the patent substitutes the slow manual breeding process with a more efficient molecular approach that accelerates line development.
2Reliability
If existing inbred parent corn lines are used for hybrid production, then breeding programs can be maintained, but the lines lose commercial competitiveness over time
Solution Approach 1:
The patent implements feedback mechanisms through continuous genomic evaluation and performance monitoring of inbred lines. By regularly assessing lines using molecular markers and field performance data, the system provides feedback to identify which lines are losing competitiveness and require intervention, allowing for dynamic adjustment of breeding strategies to maintain commercial viability.
Solution Approach 2:
The invention applies preliminary action by conducting pre-breeding evaluations and molecular marker screenings before final line selection. This allows potential issues with line performance or genetic quality to be identified and addressed early in the breeding process, preventing the development of lines that would lose commercial competitiveness before they are released.
3Manufacturing precision
If self-pollination and sib-pollination are practiced to develop inbred lines, then homozygosity is increased, but the vigor of the lines decreases
Solution Approach 1:
The patent applies partial action by implementing a limited number of self-pollination generations followed by strategic cross-pollination or outcrossing events. Rather than completing full inbreeding cycles that maximize homozygosity, the invention uses partial inbreeding (enough to achieve sufficient homozygosity for the desired trait) then introduces genetic diversity through controlled crosses to restore vigor, avoiding the excessive inbreeding that would cause vigor loss.
Data Source
AI summary
An inbred corn line, designated SLM16, the plants and seeds of the inbred corn line SLM16, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line SLM16 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line SLM16 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 SLM16, to methods for producing other inbred corn lines derived from inbred corn line SLM16 and to the inbred corn lines derived by the use of those methods.