Inbred Corn Line 7MMSM0019 Breeding for Yield and Disease Resistance
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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 7MMSM0019, which is a yellow dent inbred corn line with specific physiological and morphological characteristics, along with 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.
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 process time and cost increase significantly
Solution Approach 1:
The patent applies preliminary action by establishing a structured multi-generation inbreeding program that prepares and maintains inbred lines systematically. The method involves continuous self-pollination and selection over multiple generations (S1-S5) to achieve genetic uniformity before commercial deployment, thereby resolving the contradiction between achieving genetic purity and the time required to do so through organized preliminary breeding actions.
2Productivity
If existing inbred parent corn lines are used repeatedly, then breeding efficiency is maintained, but commercial competitiveness decreases over time
Solution Approach 1:
The patent applies dynamics by implementing a dynamic inbreeding and selection program that continuously improves inbred lines over multiple generations. The method involves ongoing self-pollination, rigorous selection for desirable traits, and genetic evaluation across generations S1-S5, enabling the breeding program to adapt and improve lines dynamically rather than relying on static existing lines, thereby maintaining both breeding efficiency and commercial competitiveness.
3Reliability
If intensive inbreeding is performed to develop superior lines, then yield and disease resistance are improved, but line vigor decreases
Solution Approach 1:
The patent applies partial or excessive action by performing intensive inbreeding and selection to a sufficient but not excessive degree. The method involves conducting self-pollination and selection through generations S1-S5 to achieve the necessary level of genetic uniformity and trait improvement, then stopping the inbreeding process at this optimal point to maintain adequate line vigor while achieving the desired disease resistance and yield improvement.
Data Source
AI summary
An inbred corn line, designated 7MMSM0019, the plants and seeds of the inbred corn line 7MMSM0019, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line 7MMSM0019 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line 7MMSM0019 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 7MMSM0019, to methods for producing other inbred corn lines derived from inbred corn line 7MMSM0019 and to the inbred corn lines derived by the use of those methods.