Maize Inbred KID5474 Segmentation Dynamics
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Solution Overview
Problem
The challenge in corn breeding is to develop maize plants that combine high yield, disease resistance, and adaptability to various environmental conditions, while also addressing issues like reduced vigor in inbred lines and the need for specific traits in different regions of the Corn Belt.
Innovation Solution
The development of the maize variety KID5474, which includes a process for producing F1 hybrid maize seeds by crossing the inbred plant KID5474 with another maize plant, and introducing additional traits such as increased water stress resistance, herbicide resistance, and modified carbohydrate metabolism through transgenes or traditional breeding methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If inbred lines are used for breeding, then homozygosity and uniformity are improved, but plant vigor and seed production capability deteriorate
Solution Approach 1:
The patent segments the breeding process into distinct phases: creating inbred lines for homozygosity, then crossing them to produce F1 hybrids for vigor, and finally producing F2 seeds for commercial cultivation. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
The patent utilizes the dynamic nature of genetic inheritance, where F1 hybrids display heterosis (vigor) that is not present in the homozygous inbred parents. This dynamic genetic expression allows the system to achieve both homozygosity in inbreds and vigor in hybrids at different stages of the breeding cycle.
2Productivity
If F1 hybrid seeds are produced, then plant vigor and seed yield are improved, but genetic uniformity and reproducibility deteriorate
Solution Approach 1:
The patent accepts the dynamic genetic composition of F1 hybrids, which are heterozygous and show vigor, while maintaining the ability to reproducibly produce these hybrids by crossing specific inbred lines. The uniformity is maintained at the inbred line level, not the hybrid level.
Solution Approach 2:
The patent changes the genetic parameter from homozygous (inbreds) to heterozygous (F1 hybrids) to achieve vigor, while controlling the crossing parameters to ensure reproducible hybrid production. This parameter change is managed through controlled pollination protocols.
3Adaptability or versatility
If traditional breeding methods are used, then adaptability to environmental conditions is improved, but breeding time and complexity increase
Solution Approach 1:
The patent performs preliminary action by developing inbred lines with specific desirable traits before creating the final hybrid. This allows the breeding program to pre-select and stabilize desirable genetic combinations, reducing the time needed for subsequent selection and testing phases.
Solution Approach 2:
The patent creates inbred lines that can serve multiple functions: as parents for hybrid production, as sources of specific traits (disease resistance, drought tolerance), and as components for developing adaptability to different environmental conditions. This multi-functionality reduces the overall breeding time required.
Data Source
AI summary
The present invention provides an inbred corn line designated KID5474, methods for producing a corn plant by crossing plants of the inbred line KID5474 with plants of another corn plant. The invention further encompasses all parts of inbred corn line KID5474, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line KID5474, and plants produced according to these methods.