Inbred Corn Line 1EEXI3109 Breeding Methods
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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 adaptability.
Innovation Solution
The introduction of the inbred corn line 1EEXI3109, which is a yellow dent inbred corn line with specific physiological and morphological characteristics, and methods for producing and utilizing it, including self-pollination, sib-pollination, and hybrid production, along with techniques for enhancing seed resistance to stress conditions and disease.
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-developing and maintaining a library of validated inbred corn lines with known genetic characteristics and performance traits. This allows breeders to select from pre-characterized lines rather than developing new lines from scratch, significantly reducing development time while maintaining genetic uniformity through the use of established homozygous lines.
Solution Approach 2:
The patent employs copying by replicating successful inbred line genetics through tissue culture and regenerating multiple identical plants from single parent plants. This ensures genetic uniformity is maintained across large populations without requiring lengthy traditional inbreeding processes, as identical genetic copies are produced asexually.
2Productivity
If existing inbred parent corn lines are used repeatedly, then breeding process efficiency is improved, but commercial competitiveness decreases over time
Solution Approach 1:
The patent applies dynamics by implementing a systematic program that continuously introduces new inbred lines into the breeding pool while phase out older lines. This dynamic renewal process ensures the germplasm remains genetically diverse and adaptable to changing market demands, disease pressures, and environmental conditions, maintaining commercial competitiveness while preserving breeding efficiency through structured line rotation.
Solution Approach 2:
The patent employs parameter changes by systematically varying genetic parameters through the introduction of new inbred lines with different genetic backgrounds and trait profiles. This allows the breeding program to adapt to changing commercial requirements such as new disease resistances, yield potentials, or quality characteristics, preventing stagnation while maintaining efficient breeding processes.
3Stability of the object's composition
If extensive inbreeding is performed to achieve homozygosity, then genetic purity is improved, but plant vigor and yield potential decrease
Solution Approach 1:
The patent applies merging by combining highly pure inbred lines (achieved through extensive inbreeding) in hybrid crosses to produce F1 hybrid corn. The inbreeding process maintains genetic purity within each parent line, while the hybrid combination restores vigor and yield potential through heterosis, effectively resolving the contradiction between purity and productivity by separating these functions into different stages of the breeding system.
Solution Approach 2:
The patent employs segmentation by dividing the corn production system into distinct genetic components: pure inbred parent lines for genetic stability and hybrid F1 generation for productivity. This segmentation allows extensive inbreeding to be applied to parent lines without permanently sacrificing yield potential, as the vigor loss is compensated in the hybrid generation where genetic diversity is restored through crossbreeding.
Data Source
AI summary
An inbred corn line, designated 1EEXI3109, the plants and seeds of the inbred corn line 1EEXI3109, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line 1EEXI3109 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line 1EEXI3109 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 1EEXI3109, to methods for producing other inbred corn lines derived from inbred corn line 1EEXI3109 and to the inbred corn lines derived by the use of those methods.