Maize Inbred PH42SH Breeding for Disease Resistance and Yield
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, 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 single variety that is agronomically sound across various conditions and environments.
Innovation Solution
The introduction of the novel maize variety PH42SH, which involves crossing with another maize plant to introduce traits like male sterility, disease resistance, and improved agronomic characteristics through backcross conversion, genetic manipulation, and transformation, along with the use of cytoplasmic or nuclear factors to confer specific traits, and the production of hybrid seeds using specific breeding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to combine desirable traits, then disease resistance and yield improvement can be achieved, but the development time becomes excessively long (6-12 years)
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred line PH42SH with specific desirable traits (disease resistance, yield potential, agronomic characteristics) before initiating breeding programs. This pre-characterization allows breeders to start with a optimized genetic base, reducing the time required for subsequent trait combination and variety development while ensuring reliable disease resistance from the outset
2Productivity
If multiple desirable traits are combined in a single maize variety, then yield and adaptability improve, but the breeding process complexity increases
Solution Approach 1:
The patent merges multiple desirable traits (disease resistance, drought tolerance, yield potential, agronomic characteristics) into a single integrated inbred line PH42SH through systematic breeding. This consolidation allows the variety to deliver high yield and adaptability across diverse environments while simplifying the breeding process by providing a pre-combined genetic package that breeders can directly utilize without needing to separately manage multiple trait introduction steps
3Adaptability or versatility
If maize varieties are developed to be agronomically sound across different conditions, then adaptability improves, but the time required for testing and validation increases
Solution Approach 1:
The patent applies preliminary action by conducting comprehensive preliminary testing and validation of inbred line PH42SH across multiple environments and conditions before releasing it for breeding use. This pre-validation establishes the variety's environmental adaptability and agronomic soundness in advance, allowing breeders to confidently deploy it in various conditions without requiring extensive additional testing time for each new application
Data Source
AI summary
A novel maize variety designated PH42SH and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH42SH with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH42SH 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 PH42SH or a locus conversion of PH42SH with another maize variety.