Maize Inbred PH42YN Accelerates Hybrid Development
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that takes six to twelve years, and there is a continuous need for stable, high-yielding maize varieties with improved traits such as disease resistance, drought tolerance, and better agronomic characteristics.
Innovation Solution
A novel maize variety, PH42YN, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and improved agronomic characteristics, using genetic manipulation and transformation techniques, and can be used to produce hybrid seeds through specific crossing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to develop new varieties with improved traits, then the desired traits such as disease resistance and yield are achieved, but the development time is excessively long (six to twelve years)
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with desirable traits (disease resistance, yield potential) before initiating crossing programs. The inbred line PH42YN was developed and characterized in advance with specific traits including disease resistance and agronomic characteristics, allowing breeders to start with pre-validated genetic material rather than beginning from scratch each breeding cycle.
Solution Approach 2:
The patent utilizes copying by creating and maintaining standardized inbred lines that can be repeatedly used as parental material. The inbred line PH42YN serves as a reusable genetic resource that can be crossed with multiple different partners to produce various hybrids, copying its desirable traits across multiple breeding programs and reducing the need to develop new genetic material each time.
2Productivity
If extensive breeding and selection processes are conducted to achieve stable, high-yielding maize varieties, then yield and agronomic soundness are improved, but the overall development process becomes time-consuming and complex
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct components: developing standardized inbred lines with specific traits (PH42YN), characterizing their performance, and then using them in controlled crossing programs. This segmentation allows parallel development of multiple inbred lines that can be tested and validated independently before being combined into hybrids, reducing overall development time.
Solution Approach 2:
The patent utilizes parameter changes by systematically evaluating and selecting inbred lines based on specific measurable parameters (yield, disease resistance, maturity, agronomic traits). The inbred line PH42YN was selected and characterized based on quantifiable performance parameters, allowing objective comparison and selection of the best genetic combinations for high-yielding hybrids.
3Adaptability or versatility
If multiple breeding objectives are pursued simultaneously (disease resistance, yield, maturity, agronomic traits), then comprehensive variety improvement is achieved, but the breeding program complexity increases
Solution Approach 1:
The patent applies universality by developing inbred line PH42YN with multiple desirable traits simultaneously (disease resistance, yield potential, agronomic characteristics), making it a multi-functional parental line that can contribute to various breeding objectives. This single inbred line serves multiple purposes in different crossing programs, reducing the need for separate specialized lines for each trait.
Solution Approach 2:
The patent uses inbred lines as intermediary genetic material that mediates between different breeding objectives. The inbred line PH42YN acts as an intermediary carrier of desirable traits that can be transferred to multiple different hybrid combinations, simplifying the management of complex multi-trait breeding programs by using standardized intermediate genetic material.
Data Source
AI summary
A novel maize variety designated PH42YN and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH42YN with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH42YN 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 PH42YN or a locus conversion of PH42YN with another maize variety.