Maize Inbred ID3633 Segmentation for Hybrid Uniformity and Yield
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Solution Overview
Problem
Corn breeding faces challenges in producing high-yielding, agronomically sound plants that are uniformly adapted across the U.S. Corn Belt, as regional growing conditions and specific issues like Gray Leaf Spot infection, cool temperatures, and soil pH levels require tailored traits in hybrids, which are often not uniformly adapted.
Innovation Solution
The development of maize inbred plant ID3633, which can incorporate desired traits such as herbicide resistance, insect resistance, disease resistance, and abiotic stress tolerance through backcrossing and transgenic methods, allowing for the production of hybrid seeds with improved vigor and adaptability across different regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If inbred plants are used for hybrid seed production, then uniformity and reproducibility of hybrid seed are improved, but plant vigor and seed yield decrease
Solution Approach 1:
The patent segments the breeding process into distinct stages: producing inbred lines for uniformity, then crossing them to produce vigorous hybrid F1 plants for high yield. This segmentation allows each stage to optimize for its specific goal without compromise.
Solution Approach 2:
The patent employs dynamic switching between homozygous inbred plants (for uniformity in seed production) and heterozygous hybrid plants (for vigor and yield). The system transitions between these states depending on the breeding stage, optimizing both uniformity and productivity at different times.
2Stability of the object's composition
If inbred seed is produced through self-pollination, then homozygosity and uniformity are improved, but plant vigor decreases making seed production difficult
Solution Approach 1:
The patent divides seed production into two separate functions: inbred line development (achieving homozygosity through self-pollination) and hybrid seed production (achieving vigor through cross-pollination). This segmentation resolves the contradiction by not requiring inbred plants to simultaneously achieve both homozygosity and vigor.
Solution Approach 2:
The patent uses the hybrid F1 generation as an intermediary that bridges the gap between homozygous inbreds and vigorous hybrids. The F1 hybrid serves as the productive stage that combines the uniformity benefits of inbreds with the vigor benefits of heterozygosity.
3Productivity
If hybrids are developed by crossing two homozygous inbreds, then vigor and seed yield are improved, but adaptability to specific regional conditions may decrease
Solution Approach 1:
The patent applies local quality by developing specific inbred lines tailored to regional conditions (e.g., Northern, Central, Southern Corn Belt adaptations) and then combining them in hybrid crosses. This allows each inbred parent to contribute region-specific adaptations while the hybrid maintains vigor.
Solution Approach 2:
The patent changes the genetic parameters of the parental inbreds to match specific regional environments (temperature, soil pH, disease pressure) before crossing them. This parameter optimization at the parental level ensures the hybrid inherits region-specific adaptability while maintaining hybrid vigor.
Data Source
AI summary
The present invention provides an inbred corn line designated ID3633, methods for producing a corn plant by crossing plants of the inbred line ID3633 with plants of another corn plant. The invention further encompasses all parts of inbred corn line ID3633, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line ID3633, and plants produced according to these methods.