Maize Inbred PH253P Breeding for Disease Resistance and Uniform Maturity
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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, PH253P, with specific breeding processes and genetic modifications to enhance traits like abiotic stress tolerance, disease resistance, and uniformity, achieved through backcross conversion and transformation methods.
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 to crop maturity is extended and uniformity is reduced
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance) before hybrid development. The inbred PH253P was developed through systematic breeding and selection processes, with its traits predetermined and verified through field testing, allowing faster hybrid development without sacrificing trait reliability.
Solution Approach 2:
The patent utilizes parameter changes by modifying breeding approaches to achieve faster maturity. The inbred PH253P exhibits a relative maturity of 98 days, which represents an optimized parameter balance between maintaining disease resistance while reducing time to maturity compared to traditional breeding timelines. This is achieved through selective breeding and genetic optimization.
2Reliability
If traditional plant breeding methods are used to combine desirable traits, then drought tolerance can be achieved, but uniformity of plant characteristics is reduced
Solution Approach 1:
The patent applies segmentation by developing uniform inbred lines (PH253P) with standardized genetic backgrounds and predetermined traits. Each inbred line is separately characterized for specific traits including drought tolerance, then these standardized units are combined in hybrid development. This segmentation ensures uniformity while maintaining desired stress tolerances.
Solution Approach 2:
The patent achieves homogeneity by creating inbred lines with consistent genetic composition and uniform phenotypic expression. The inbred PH253P displays uniform plant characteristics including consistent maturity timing, uniform plant height, and standardized ear height, which are maintained through rigorous selection and verification processes.
3Reliability
If traditional plant breeding methods are used, then various desirable traits can be combined, but productivity and yield are reduced
Solution Approach 1:
The patent applies merging by combining the strengths of multiple inbred lines into hybrid combinations. The inbred PH253P is specifically designed to be combined with other complementary inbreds to produce hybrids that exhibit both the desired trait combinations (disease resistance, drought tolerance) and enhanced productivity through heterosis effects.
Solution Approach 2:
The patent achieves universality by developing inbred PH253P with multiple desirable traits integrated into a single genetic package. The inbred provides drought tolerance, disease resistance, and uniform maturity simultaneously, making it a universal parent that can be used across different hybrid combinations to achieve both trait reliability and high productivity.
Data Source
AI summary
A novel maize variety designated PH253P and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH253P with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH253P 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 PH253P or a locus conversion of PH253P with another maize variety.