Maize PH24DS Molecular Marker 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 the novel maize variety PH24DS, which incorporates transgenes for herbicide tolerance and insect control, along with a relative maturity of approximately 99, allowing for the creation of hybrid seeds with improved agronomic qualities through crossing and locus conversion processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding methods are used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the time required to develop new varieties is excessive and uniformity is difficult to maintain
Solution Approach 1:
The patent applies parameter changes by utilizing molecular marker technology to detect and select for specific genetic traits at the DNA level, rather than waiting for phenotypic expression. This allows breeders to identify plants with desired disease resistance and drought tolerance genes early in the breeding process, dramatically reducing the time required to develop new varieties while maintaining reliable trait expression in the final product.
Solution Approach 2:
The patent replaces traditional mechanical breeding methods (manual crossing, visual selection, and field testing over multiple generations) with molecular marker-assisted selection. This substitution enables rapid identification of plants carrying specific desirable traits through DNA analysis, eliminating the need for lengthy field trials and multiple generations of breeding to confirm trait presence and uniformity.
2Stability of the object's composition
If traditional breeding methods are used to achieve uniformity in plant characteristics, then genetic diversity is maintained, but the uniformity of germination, stand establishment, growth rate, and maturity is insufficient for mechanical harvesting
Solution Approach 1:
The patent applies parameter changes by using molecular markers to select for uniform genetic composition across the breeding population. By identifying and selecting plants with identical or highly similar genetic profiles at key loci controlling germination, growth rate, and maturity, the method achieves the uniformity required for mechanical harvesting while maintaining the ability to reproduce the variety consistently across generations.
Solution Approach 2:
The patent applies preliminary action by performing molecular marker analysis early in the breeding process to identify and eliminate genetic variations before they manifest phenotypically. This allows breeders to establish uniform genetic lines early, ensuring that all subsequent generations will exhibit consistent characteristics suitable for mechanical harvesting, rather than attempting to achieve uniformity after genetic diversity has already expressed itself.
3Productivity
If multiple desirable traits are combined in a single variety, then agronomic quality and yield are improved, but the complexity of breeding programs increases
Solution Approach 1:
The patent applies parameter changes by using molecular marker technology to simultaneously track and select for multiple different genetic traits (disease resistance, drought tolerance, yield components) in a single breeding program. This allows breeders to monitor the presence and combination of multiple desirable traits through DNA analysis rather than requiring separate breeding programs for each trait, thereby reducing overall program complexity while achieving improved agronomic quality and yield.
Solution Approach 2:
The patent applies universality by developing a single integrated molecular marker-assisted selection system that can detect and select for multiple different types of traits simultaneously. This multi-functional approach allows one breeding program to achieve what would traditionally require multiple separate programs, combining disease resistance, drought tolerance, yield improvement, and uniformity selection into a unified process that reduces complexity while maximizing productivity.
Data Source
AI summary
A novel maize variety designated PH24DS and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH24DS with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH24DS 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 PH24DS or a locus conversion of PH24DS with another maize variety.