Inbred Corn Line SLB24 Yield and Stress Resistance via Marker Selection
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing new inbred corn lines that maintain commercial competitiveness due to decreased vigor over time, requiring continuous efforts to improve yield and resistance to pests, diseases, and environmental stresses.
Innovation Solution
The development of the inbred corn line SLB24, which exhibits increased grain yield and resistance to insects, weeds, and diseases, along with methods for producing hybrid corn plants using SLB24 as a parent, including seed treatment options and controlled pollination techniques to enhance yield and uniformity.
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 purity and uniformity are improved, but vigor and yield potential decrease over time
Solution Approach 1:
The patent applies parameter changes by utilizing molecular markers to detect and select for specific genetic parameters (alleles, genotypes) that confer vigor and yield potential. This allows the inbred line to maintain genetic purity while selecting for superior quantitative traits that prevent vigor decay over generations.
Solution Approach 2:
The patent implements feedback through molecular marker-assisted selection, where genetic information is continuously monitored and used to guide breeding decisions. This feedback mechanism ensures that only lines with desired vigor and yield characteristics are maintained, preventing the accumulation of deleterious effects that would otherwise reduce productivity.
2Stability of the object's composition
If continuous inbreeding is practiced to maintain homozygosity, then genetic uniformity is improved, but seed production and breeding efficiency decrease
Solution Approach 1:
The patent applies preliminary action by using molecular markers to identify and select for superior homozygous lines before traditional seed production begins. This preliminary genetic screening allows for efficient selection of lines with desired traits, reducing the need for extensive subsequent inbreeding and accelerating the development of new varieties.
Solution Approach 2:
The patent replaces traditional mechanical field-based selection methods with molecular genetic testing. This substitution allows for more precise and efficient identification of homozygous lines with superior traits, improving seed production efficiency while maintaining genetic uniformity without requiring as much manual intervention and time.
3Device complexity
If conventional breeding methods are used without molecular markers, then breeding simplicity is maintained, but selection precision and accuracy of desirable traits decrease
Solution Approach 1:
The patent introduces molecular markers as intermediaries between the breeding process and the desired traits. These markers serve as detectable proxies for genes controlling important traits, allowing breeders to select for desired characteristics with high precision without directly observing or measuring the complex phenotypic expressions, thereby improving selection accuracy while managing complexity.
Solution Approach 2:
The patent changes the parameters of measurement from phenotypic observations to molecular genetic markers. This parameter change enables precise detection of genetic variants associated with desirable traits, significantly improving selection accuracy. The molecular markers provide objective, measurable criteria that can be reliably used to identify and select superior lines.
Data Source
AI summary
An inbred corn line, designated SLB24, the plants and seeds of the inbred corn line SLB24, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line SLB24 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line SLB24 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 SLB24, to methods for producing other inbred corn lines derived from inbred corn line SLB24 and to the inbred corn lines derived by the use of those methods.