HID4323 Maize Inbred Line for Uniform Corn Belt Adaptation
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Solution Overview
Problem
Current corn breeding methods face 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 the maize variety HID4323, which includes specific traits such as increased water stress resistance, waxy starch, male sterility, and disease resistance, achieved through crossing and backcrossing with other maize plants to introduce desired traits, and utilizing transgenes to enhance characteristics like herbicide resistance and modified metabolism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional corn breeding methods are used to develop hybrids with region-specific traits, then adaptability to specific regions improves, but uniform performance across the entire U.S. Corn Belt deteriorates
Solution Approach 1:
The patent develops inbred line HID4323 with multi-functional traits including Gray Leaf Spot resistance, drought tolerance, and adaptability to various soil conditions, enabling it to serve as a universal parental line that produces hybrids performing consistently across different Corn Belt regions rather than requiring region-specific breeding
2Stability of the object's composition
If inbred lines are developed through multiple generations of self-pollination to achieve homozygosity, then uniformity and true-breeding characteristics improve, but plant vigor and seed yield deteriorate
Solution Approach 1:
The patent employs advanced breeding techniques including marker-assisted selection and genomic selection to accelerate the inbreeding process, reducing the number of generations needed to achieve homozygosity while maintaining selection pressure for high yield and vigor traits, thus producing inbreds with both stability and productivity
3Manufacturing precision
If detasseling is performed manually to produce hybrid seed, then hybrid seed production accuracy improves, but labor requirements and production cost deteriorate
Solution Approach 1:
The patent utilizes natural male sterility traits and cytoplasmic male sterility (CMS) systems in the inbred lines, allowing hybrid seed production without manual detasseling - the female parent self-regulates by not producing functional pollen, eliminating labor-intensive detasseling while maintaining hybrid seed production accuracy
4Productivity
If F1 hybrid seed is produced to achieve heterosis and increased vigor, then plant performance improves, but the ability to reproduce identical hybrids deteriorates due to segregation in F2 generation
Solution Approach 1:
The patent produces and maintains pure, homozygous inbred parental lines through multiple generations of self-pollination and selection before hybridization, ensuring that the F1 hybrid seed produced from these standardized parents will consistently reproduce the same heterotic traits and performance characteristics in subsequent plantings
Data Source
AI summary
The present invention provides an inbred corn line designated HID4323, methods for producing a corn plant by crossing plants of the inbred line HID4323 with plants of another corn plant. The invention further encompasses all parts of inbred corn line HID4323, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line HID4323, and plants produced according to these methods.