Maize Inbred PH4BYD Breeding Platform
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, requiring six to twelve years from the initial cross to delivering finished seed to farmers, 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
A novel maize variety, PH4BYD, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of hybrid seeds with enhanced agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding processes are used to develop new maize varieties, then desirable traits such as disease resistance, drought tolerance, and high yield can be combined, but the process takes six to twelve years and is time-consuming
Solution Approach 1:
The patent applies preliminary action by using backcross conversion to pre-establish the PH4BYD inbred line with desired traits (male sterility, disease resistance, drought tolerance) before hybrid development. This preparatory work condenses multiple traditional breeding steps into a standardized platform, enabling faster hybrid variety development while maintaining trait stability.
Solution Approach 2:
The patent employs parameter changes by modifying genetic parameters through genetic manipulation and transformation techniques. By altering specific genetic parameters (introducing transgenes, modifying existing genes) in the PH4BYD inbred line, the patent achieves desired traits more rapidly than traditional phenotypic selection, reducing the breeding timeline while ensuring trait reliability.
2Productivity
If multiple desirable traits are combined in a single maize variety, then agronomic performance and yield are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into distinct modules: (1) development of the PH4BYD inbred line with core traits (male sterility, disease resistance), (2) introduction of additional traits through backcrossing, and (3) hybrid development. This modular approach allows each trait to be addressed systematically, reducing overall program complexity while achieving multiple desirable traits in the final variety.
Solution Approach 2:
The patent employs universality by creating the PH4BYD inbred line as a multi-functional platform that simultaneously provides male sterility for hybrid seed production, disease resistance for agronomic performance, and drought tolerance for environmental adaptability. This universal inbred line can be used across multiple hybrid combinations, simplifying the breeding program by avoiding the need to develop separate lines for each trait combination.
3Loss of time
If genetic manipulation and transformation are used to introduce traits, then breeding time is reduced and traits are precisely introduced, but the complexity of the technical process increases
Solution Approach 1:
The patent employs an intermediary approach by using the PH4BYD inbred line as a mediator between traditional breeding and modern biotechnology. The inbred line serves as a stable genetic background that can receive transgenes or gene edits through transformation, then be propagated and combined with other traits through conventional backcrossing. This intermediary platform simplifies the overall process by separating the complex genetic manipulation step from the trait combination process.
Data Source
AI summary
A novel maize variety designated PH4BYD and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4BYD with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4BYD 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 PH4BYD or a locus conversion of PH4BYD with another maize variety.