Maize Inbred PH1DG1 Breeding for Stress Resistance and Uniformity
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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 mechanical harvesting.
Innovation Solution
Development of a novel maize variety, PH1DG1, with specific breeding processes and genetic modifications to introduce desirable traits like drought resistance, disease resistance, and improved agronomic qualities, including resistance to various stresses and pests, through backcross conversion and transformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding methods are used to combine desirable traits, then the breeding process can be simplified, but it becomes difficult to integrate multiple traits such as disease resistance, drought tolerance, and uniformity into a single variety
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing parental inbred lines with specific traits (disease resistance, drought tolerance), producing F1 hybrids through controlled crossing, and selecting for uniformity in subsequent generations. This segmentation allows each trait to be developed and optimized independently before integration, resolving the contradiction between trait integration and process complexity
Solution Approach 2:
The patent merges multiple desirable traits from different parental lines into a single F1 hybrid variety. By crossing inbred lines that have been selectively bred for specific traits (such as disease resistance from one parent and drought tolerance from another), the invention combines these traits in the hybrid progeny, achieving adaptability while managing complexity through systematic breeding design
2Productivity
If mechanical harvesting is implemented, then harvesting efficiency is improved, but uniformity of plant characteristics becomes critical and difficult to achieve
Solution Approach 1:
The patent applies local quality by selecting for uniformity in specific plant characteristics that are critical for mechanical harvesting, such as plant height, ear height, and maturity timing. By optimizing these local traits while allowing other characteristics to vary, the invention achieves the precision needed for mechanical harvesting without sacrificing overall productivity
Solution Approach 2:
The patent utilizes parameter changes by controlling key growth parameters such as days to maturity, plant height, and ear position through selective breeding. By adjusting these parameters to specific target ranges, the invention creates uniformity in plant characteristics that enables efficient mechanical harvesting while maintaining high productivity
3Reliability
If multiple desirable traits are integrated into a single variety, then resistance to diseases, insects, and environmental stresses is improved, but the time and resources required for breeding increase
Solution Approach 1:
The patent applies preliminary action by pre-developing parental inbred lines that already possess specific desirable traits such as disease resistance and drought tolerance before the main hybridization event. This preliminary selection and development of trait-specific parental lines reduces the time required for the overall breeding program, as the traits are already optimized in the parents rather than being combined de novo
Solution Approach 2:
The patent utilizes copying by reproducing successful trait combinations through repeated crossing of selected parental lines and propagating superior F1 hybrid seed. By copying proven genetic combinations and maintaining true-to-type reproduction through controlled pollination, the invention achieves reliable stress and pest resistance while minimizing breeding time through efficient seed production protocols
Data Source
AI summary
A novel maize variety designated PH1DG1 and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1DG1 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1DG1 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 PH1DG1 or a locus conversion of PH1DG1 with another maize variety.