Inbred Corn Line 4691436 Breeding for Yield and Disease Resistance
Find Innovative SolutionsGenerate Solutions
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 to various production conditions.
Innovation Solution
The introduction of the inbred corn line 4691436, which is a yellow dent inbred corn line with specific physiological and morphological characteristics, along with methods for producing and breeding new inbred and hybrid corn plants using techniques such as self-pollination, sib-pollination, and tissue culture, to create stable and uniform populations with improved traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional inbreeding techniques are used to develop new inbred corn lines, then new germplasm with improved traits can be obtained, but the process is slow and costly
Solution Approach 1:
The patent applies preliminary action by pre-developing and maintaining a library of inbred corn lines with specific desirable traits (such as disease resistance, yield potential, and adaptability) before they are needed for hybrid production. This allows breeders to select from pre-characterized lines rather than developing new lines from scratch each time, significantly reducing the time required to create new hybrid varieties while maintaining improvement in germplasm quality
2Productivity
If existing inbred parent corn lines are used repeatedly, then production is maintained, but they lose commercial competitiveness over time
Solution Approach 1:
The patent applies parameter changes by systematically varying and selecting for different genetic parameters in the inbred lines over time. The corn breeding program continuously introduces new genetic variation and selects for improved traits such as enhanced disease resistance, better yield components, and improved adaptability to different environmental conditions. This ensures that the inbred parent lines maintain and improve their commercial competitiveness through controlled changes in genetic parameters rather than remaining static
3Stability of the object's composition
If self-pollination and sib-pollination techniques are used, then inbred lines can be developed, but additional inbreeding merely serves to increase seed of the developed inbred after sufficient inbreeding is achieved
Solution Approach 1:
The patent applies feedback by implementing systematic monitoring and evaluation of inbreeding progress through tracking heterozygosity levels, uniformity of plant characteristics, and performance metrics across generations. This feedback mechanism allows breeders to determine when sufficient inbreeding has been achieved and when to stop the inbreeding process and transition to selection and line development, preventing wasteful continuation of inbreeding that would only produce more seed without improving the line's genetic composition or performance
Data Source
AI summary
An inbred corn line, designated 4691436, the plants and seeds of the inbred corn line 4691436, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line 4691436 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line 4691436 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 4691436, to methods for producing other inbred corn lines derived from inbred corn line 4691436 and to the inbred corn lines derived by the use of those methods.