Inbred Corn Line 7SSDE1042 Breeding for Yield and Stability
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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 creation of improved germplasm with enhanced yield, disease resistance, and adaptability.
Innovation Solution
The introduction of the inbred corn line 7SSDE1042, which is a yellow dent corn line with specific physiological and morphological characteristics, and methods for producing and breeding corn plants using techniques such as self-pollination, sib-pollination, and tissue culture to create uniform and stable inbred and hybrid corn plants, along with the use of genetic markers and mutagenesis to introduce desirable traits.
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 stability are achieved, but the process is slow and costly
Solution Approach 1:
The patent applies preliminary action by establishing a structured multi-generation inbreeding program where S1, S2, and S3 generations are systematically developed with specific selection criteria. This preliminary structuring of the breeding process allows for efficient progression through generations, reducing overall development time while maintaining genetic uniformity through controlled self-pollination and selection protocols
2Stability of the object's composition
If extensive inbreeding is performed to develop new inbred lines, then genetic stability is improved, but vigor of the lines decreases
Solution Approach 1:
The patent applies dynamics by implementing a flexible selection process where plants are evaluated at multiple growth stages (S1, S2, S3 generations) and only those meeting specific vigor and uniformity criteria are advanced. This dynamic selection approach maintains genetic stability through continued inbreeding while preserving plant vigor by eliminating weak individuals at each generation, allowing the breeding program to adapt to observed performance
3Productivity
If existing inbred parent corn lines are used, then breeding efficiency is maintained, but commercial competitiveness is lost over time
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct generational stages (S1, S2, S3) with specific objectives for each. This segmentation allows systematic introduction of new genetic material and selection for contemporary traits at each stage, ensuring the inbred lines remain commercially competitive while maintaining breeding efficiency through structured progression
Solution Approach 2:
The patent applies parameter changes by implementing selection criteria that evaluate multiple parameters including plant vigor, uniformity, disease resistance, and adaptability across different generations. By changing and optimizing these selection parameters at each generational stage, the program develops inbred lines with improved commercial competitiveness while maintaining genetic stability
Data Source
AI summary
An inbred corn line, designated 7SSDE1042, the plants and seeds of the inbred corn line 7SSDE1042, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line 7SSDE1042 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line 7SSDE1042 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 7SSDE1042, to methods for producing other inbred corn lines derived from inbred corn line 7SSDE1042 and to the inbred corn lines derived by the use of those methods.