Inbred Corn Line SLD14 Genetic Stability and Yield
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Solution Overview
Problem
The development of new inbred corn lines is a slow and costly process, requiring expertise and numerous steps, and existing inbred parent corn lines lose commercial competitiveness over time, necessitating the need for improved germplasm to enhance yield production and protect against insects, weeds, and diseases.
Innovation Solution
The introduction of the inbred corn line SLD14, which is a new yellow dent inbred corn line with specific physiological and morphological characteristics, along with methods for producing and treating seeds to increase resistance to stressed conditions, and the use of breeding techniques such as pedigree breeding, backcrossing, haploid breeding, and mutation breeding to develop new inbred and hybrid corn plants.
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 purity are improved, but the development time and cost increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-establishing a comprehensive germplasm repository containing diverse corn genetic material before breeding begins. This pre-prepared genetic resource bank allows breeders to immediately access pre-characterized parental lines with desired traits, eliminating the time-consuming process of creating and characterizing new parental lines from scratch during the breeding program.
Solution Approach 2:
The patent employs copying by creating and maintaining multiple replicated copies of valuable inbred lines and their associated performance data in a centralized germplasm repository. This allows rapid duplication and distribution of proven genetic material across different breeding programs and locations, accelerating the development of new inbred lines without repeating extensive characterization studies.
2Stability of the object's composition
If existing inbred parent corn lines are continued to be used, then breeding program stability is maintained, but commercial competitiveness decreases over time
Solution Approach 1:
The patent applies dynamics by implementing a living, evolving germplasm repository that continuously incorporates new genetic material and performance data. Rather than relying on static, aging inbred lines, the system dynamically updates its genetic resources with newly discovered parental lines and trait combinations, allowing the breeding program to maintain stability through systematic renewal of its genetic foundation.
Solution Approach 2:
The patent employs parameter changes by systematically evaluating and selecting parental lines based on updated performance parameters and trait thresholds. The germplasm repository maintains dynamic criteria for genetic diversity, trait expression levels, and combining ability, allowing the breeding program to adapt to changing market demands and environmental conditions while maintaining operational stability.
3Reliability
If multiple breeding techniques are implemented to develop disease-resistant varieties, then resistance to insects, weeds, and diseases is improved, but process complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct, manageable modules: germplasm acquisition, trait evaluation, crossing programs, progeny testing, and variety registration. Each module handles specific tasks with dedicated protocols and personnel, allowing multiple breeding techniques to be implemented systematically without overwhelming complexity. The germplasm repository itself is segmented into collections based on trait types, making it easier to access specific genetic resources for targeted breeding objectives.
4Stability of the object's composition
If inbreeding is continued beyond optimal point, then genetic purity is improved, but seed production cost increases
Solution Approach 1:
The patent applies feedback by implementing continuous monitoring and evaluation of inbred line performance, genetic purity, and homogeneity at each generation of inbreeding. Molecular marker analysis and field performance data provide real-time feedback on the degree of homozygosity and genetic stability, allowing breeders to determine the optimal stopping point for inbreeding processes. This prevents unnecessary continuation of expensive inbreeding cycles once sufficient genetic purity is achieved.
Data Source
AI summary
An inbred corn line, designated SLD14, the plants and seeds of the inbred corn line SLD14, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line SLD14 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line SLD14 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 SLD14, to methods for producing other inbred corn lines derived from inbred corn line SLD14 and to the inbred corn lines derived by the use of those methods.