Maize Inbred PH2SRH Breeding via Marker-Assisted Selection
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, typically taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
The introduction of the novel maize variety PH2SRH, which involves crossing with another maize plant to introduce traits like male sterility, herbicide tolerance, and disease resistance through backcross conversion and genetic transformation, along with specific breeding methods to achieve desired phenotypic and genotypic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then the variety achieves stability and agronomic soundness, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, yield potential, stress tolerance) before crossing. This advance preparation of parental material with defined genetic characteristics accelerates the breeding process while maintaining variety stability, as the parent lines are already optimized for trait combination.
Solution Approach 2:
The patent uses molecular markers to copy and track specific genetic traits through generations during breeding. By using marker-assisted selection, breeders can identify and select plants carrying desired traits without lengthy phenotypic evaluation, significantly reducing the time required to develop stable varieties while ensuring trait inheritance.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety achieves greater yield and stress tolerance, but the breeding process becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct stages: selecting parent lines with specific individual traits, crossing them to combine traits, and then separately evaluating different trait combinations in progeny. This segmented approach to trait combination allows systematic integration of multiple desirable traits while managing breeding complexity through structured progression.
Solution Approach 2:
The patent uses parameter changes by altering selection criteria at different breeding stages using molecular markers. Instead of relying solely on phenotypic observation, the method changes the selection parameter to include genetic marker profiles, enabling efficient tracking and combination of multiple traits simultaneously, thereby reducing breeding process complexity.
3Productivity
If conventional breeding methods are used, then the variety achieves high yield, but the process requires extensive field testing across multiple generations
Solution Approach 1:
The patent replaces the mechanical system of multi-generation field testing with molecular marker-based genetic analysis. Instead of physically growing and evaluating multiple generations in fields to assess yield potential, the method uses DNA markers to predict and select for high-yielding genotypes, dramatically reducing the time required while maintaining productivity focus.
Data Source
AI summary
A novel maize variety designated PH2SRH and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2SRH with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2SRH through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH2SRH or a locus conversion of PH2SRH with another maize variety.