Inbred Corn Line 036153 CMS Breeding
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Solution Overview
Problem
Existing corn breeding techniques face challenges in developing new inbred corn lines that maintain commercial competitiveness over time, as existing inbred parent lines lose vigor and require costly and expertise-intensive processes to produce hybrid corn varieties with improved yield and trait technologies.
Innovation Solution
The development of a new inbred corn line designated 036153, which offers increased grain yield and enhanced trait technologies for improved resistance to insects, weeds, and diseases, along with methods for producing hybrid corn plants using this line, including self-pollination, sib-pollination, and tissue culture regeneration techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional inbreeding techniques are used to develop new inbred corn lines, then commercial competitiveness is maintained initially, but vigor is lost over time and breeding processes become costly and expertise-intensive
Solution Approach 1:
The patent applies parameter changes by utilizing cytoplasmic male sterility (CMS) systems to fundamentally alter the breeding process. Specifically, it employs three different CMS systems (S, C, and T cytoplasms) that change the fertility parameter of the female parent, eliminating the need for manual detasseling and enabling streamlined hybrid seed production while maintaining commercial competitiveness
2Stability of the object's composition
If inbreeding is continued to develop new inbred lines, then genetic uniformity is improved, but vigor decreases and additional inbreeding merely increases seed production without improvement
Solution Approach 1:
The patent applies preliminary action by pre-establishing three distinct inbred lines (032133, 034539, 035376) with different CMS cytoplasms before the hybridization stage. This preliminary preparation of genetically uniform yet cytoplasmically diverse parents enables the production of vigorous F1 hybrids with restored fertility, avoiding the vigor loss associated with continued inbreeding
3Manufacturing precision
If manual detasseling is used to produce hybrid seed, then cross-pollination control is improved, but labor costs and process complexity increase
Solution Approach 1:
The patent applies self-service by utilizing cytoplasmic male sterility in the female parent to automatically prevent self-pollination and enable cross-pollination control without manual intervention. The CMS trait causes the female parent to be naturally sterile, eliminating the need for detasseling operations and reducing both labor costs and process complexity while maintaining precise pollination control
4Loss of time
If existing inbred parent lines are used repeatedly, then breeding experience is accumulated, but vigor loss occurs and commercial competitiveness decreases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into three distinct inbred lines, each carrying a different CMS cytoplasm (S, C, and T). This segmentation allows the breeding program to maintain genetic diversity and vigor while accumulating breeding experience across multiple independent line combinations, preventing the vigor loss that occurs with repeated use of single inbred lines
Data Source
AI summary
An inbred corn line, designated 036153, the plants and seeds of the inbred corn line 036153, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line 036153 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line 036153 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 036153, to methods for producing other inbred corn lines derived from inbred corn line 036153 and to the inbred corn lines derived by the use of those methods.