HID3447 Corn Line Breeding for Regional Hybrid Adaptation
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Solution Overview
Problem
Existing corn breeding methods struggle to develop hybrids that are uniformly adapted across diverse regions of the U.S. Corn Belt, as regional growing conditions pose unique challenges such as Gray Leaf Spot infection, cool temperatures, and soil pH issues, limiting the effectiveness of current hybrids.
Innovation Solution
Development of the maize variety HID3447, which can be used to create inbreds and hybrids with specific traits tailored to address regional challenges, utilizing biotechnology tools like microsatellites and SNPs to introduce desirable traits, and employing methods like pedigree selection, backcrossing, and recurrent selection to ensure genetic uniformity and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional corn breeding methods are used, then hybrid seed production is maintained, but uniform adaptation across diverse Corn Belt regions is not achieved
Solution Approach 1:
The breeding program is divided into multiple selection cycles (pedigree selection, backcrossing, recurrent selection) that systematically address different regional challenges. Each selection cycle focuses on specific traits relevant to particular Corn Belt regions, allowing complex adaptation to be achieved through manageable, sequential steps rather than attempting to solve all regional variations simultaneously.
Solution Approach 2:
The patent applies local quality by developing inbreds and hybrids with specific traits tailored to address regional challenges such as Gray Leaf Spot infection in specific areas, cool temperatures in northern regions, and soil pH issues in particular zones. This allows different portions of the Corn Belt to receive varieties optimized for their specific local conditions while maintaining overall program coherence.
2Reliability
If regional-specific traits are introduced through biotechnology, then hybrid performance in specific regions is improved, but genetic uniformity of the inbred line may be compromised
Solution Approach 1:
Desirable traits are introduced into inbred lines through preliminary backcrossing operations before the final hybrid seed production. This preliminary action allows the inbred line to be pre-conditioned with region-specific traits through controlled backcrossing to recurrent parents, ensuring that when the hybrid is produced, the desired traits are already established and the inbred line maintains its genetic uniformity.
Solution Approach 2:
The breeding program incorporates feedback through systematic evaluation of inbred lines and hybrids across multiple regions and years. Performance data from field trials is used to feedback into selection decisions, allowing breeders to identify which inbred lines maintain genetic uniformity while delivering reliable hybrid performance, and to adjust subsequent breeding strategies accordingly.
3Productivity
If multiple selection methods (pedigree selection, backcrossing, recurrent selection) are employed, then desirable traits are combined effectively, but breeding time and resources are increased
Solution Approach 1:
The patent merges multiple selection methods (pedigree selection, backcrossing, recurrent selection) into an integrated breeding program where each method builds upon the previous ones. Pedigree selection identifies promising lines, backcrossing introduces specific traits while maintaining uniformity, and recurrent selection refines the lines through repeated cycles. This merging allows efficient combination of desirable traits through synergistic rather than additive processes.
Solution Approach 2:
The breeding program design is universal in that it can be applied across multiple Corn Belt regions and for multiple crop years. The same fundamental selection protocols and backcrossing strategies can be adapted to address different regional challenges (disease pressure, temperature, soil conditions) without requiring entirely separate breeding programs, thereby reducing overall time and resource requirements.
Data Source
AI summary
The present invention provides an inbred corn line designated HID3447, methods for producing a corn plant by crossing plants of the inbred line HID3447 with plants of another corn plant. The invention further encompasses all parts of inbred corn line HID3447, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line HID3447, and plants produced according to these methods.