Maize Inbred PH1DGK Breeding via Marker-Assisted Selection
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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, PH1DGK, with specific breeding processes and genetic modifications that enhance resistance to various stresses, diseases, and improve agronomic qualities like maturity and yield, achieved through crossing and backcrossing with other maize varieties, and introduction of desired traits through locus conversion.
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 increases and uniformity of plant characteristics may be compromised
Solution Approach 1:
The patent applies preliminary action by using marker-assisted selection to identify and select plants with desired traits at early stages of breeding. Molecular markers are used to screen progeny for presence of target genes before phenotypic expression, allowing breeders to make selection decisions earlier in the breeding process rather than waiting for disease challenge or maturity, thus reducing overall breeding time while maintaining trait reliability
2Reliability
If traditional plant breeding is used to combine desirable traits, then drought tolerance can be improved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, and maturity may be compromised
Solution Approach 1:
The patent replaces mechanical/phenotypic selection methods with molecular marker-based selection. Instead of visually assessing and selecting plants based on phenotypic traits like germination uniformity, stand establishment, and maturity timing, the invention uses DNA markers to select plants with desired genotypes. This molecular-level selection ensures genetic uniformity while maintaining drought tolerance traits, as markers provide precise identification of target genes regardless of environmental variability affecting phenotypic expression
3Productivity
If mechanical harvesting is used, then productivity increases, but uniformity of plant characteristics becomes critical and may be difficult to achieve with traditional breeding
Solution Approach 1:
The patent uses molecular marker technology to achieve uniformity in plant characteristics required for mechanical harvesting. By selecting plants based on genetic markers rather than phenotypic traits, the method ensures consistent germination, stand establishment, growth rate, and maturity timing across the population. This genetic uniformity enables reliable mechanical harvesting operations, as machines can efficiently harvest uniform crops without manual intervention
Data Source
AI summary
A novel maize variety designated PH1DGK and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1DGK with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1DGK 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 PH1DGK or a locus conversion of PH1DGK with another maize variety.