Maize Inbred PH1DFR Breeding for Disease Resistance and Yield
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and yield improvement.
Innovation Solution
Development of the novel maize variety PH1DFR, which is a homozygous inbred line with specific traits introgressed through backcross conversion and transformation, allowing for the creation of hybrid seeds and plants with enhanced resistance to various stresses and improved agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then disease resistance and drought tolerance can be improved, but the time required to develop new varieties and the complexity of the breeding process increase
Solution Approach 1:
The patent employs preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance, uniformity) before hybridization. The inbred line PH1DFR was developed through multiple generations of selective breeding and evaluation, with traits already optimized and documented. This preliminary characterization allows breeders to confidently combine proven traits without extensive additional testing, significantly reducing the time required to develop new varieties while maintaining high reliability of disease resistance and stress tolerance.
2Productivity
If multiple desirable traits are combined in a single variety, then yield and stress resistance improve, but the uniformity of plant characteristics becomes more difficult to maintain
Solution Approach 1:
The patent applies local quality by focusing on specific, well-defined genetic loci for each desirable trait rather than attempting to combine multiple polygenic traits simultaneously. The inbred line PH1DFR was developed with targeted selection for disease resistance, drought tolerance, and uniformity at specific genetic locations. This approach allows each trait to be optimized independently and then combined in a predictable manner, maintaining uniformity of plant characteristics while achieving high yield and stress resistance through the controlled combination of locally optimized genetic regions.
3Ease of operation
If inbred lines with high uniformity are used for hybrid seed production, then mechanical harvesting efficiency improves, but the genetic diversity required for stress resistance decreases
Solution Approach 1:
The patent merges (combines) the benefits of high uniformity and genetic diversity for stress resistance by creating inbred line PH1DFR through the systematic combination of multiple inbred lines, each contributing specific desirable traits. The resulting line maintains high uniformity of plant characteristics (plant height, ear height, maturity) necessary for mechanical harvesting efficiency while simultaneously incorporating diverse genetic regions that provide disease resistance and drought tolerance. This merging of uniformity and targeted genetic diversity allows the hybrid to exhibit both mechanical harvesting compatibility and robust stress resistance.
Data Source
AI summary
A novel maize variety designated PH1DFR and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1DFR with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1DFR through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PH1DFR or a locus conversion of PH1DFR with another maize variety.