Maize Inbred PH48FR Breeding via Segmentation and Preliminary Action
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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 PH48FR, which involves crossing with other maize plants to introduce desirable traits through backcross conversion, genetic manipulation, and transformation, incorporating cytoplasmic or nuclear factors for male sterility and other beneficial characteristics like herbicide tolerance, insect resistance, and improved metabolic traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then the variety can be agronomically sound and stable, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with desirable traits through multiple generations of self-pollination and selection before the actual hybrid development. This allows the breeding program to start with ready-to-use genetic material rather than beginning from scratch, significantly reducing the overall breeding cycle time while maintaining agronomic soundness and stability.
Solution Approach 2:
The breeding program is segmented into distinct phases: development of inbred lines, evaluation of inbred lines, and hybrid production. This segmentation allows parallel processing of multiple breeding tasks simultaneously, reducing the sequential time required while ensuring each phase meets the required reliability standards before proceeding to the next.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety becomes more versatile and high-performing, but the breeding complexity increases
Solution Approach 1:
The complex task of combining multiple desirable traits is segmented by developing inbred lines that each carry specific trait combinations, then systematically crossing these pre-prepared lines. This divides the complex breeding program into manageable modules, reducing overall complexity while enabling the combination of multiple traits in the final hybrid variety.
Solution Approach 2:
The inbred lines developed serve multiple functions: they can be used as parental lines for hybrid production, evaluated for their individual trait performance, and combined in different crossing schemes. This multi-functionality reduces the need for separate breeding programs for each trait combination, simplifying the overall approach while maintaining versatility.
3Ease of manufacture
If conventional breeding techniques are used, then the process is straightforward, but it cannot efficiently introduce specific desirable traits such as disease resistance and drought tolerance
Solution Approach 1:
Desirable traits such as disease resistance and drought tolerance are introduced and stabilized in inbred lines through preliminary selective breeding before the main hybrid development. This preliminary introduction of specific traits allows the subsequent hybrid crossing to focus on combining these pre-established traits with other desirable characteristics, improving overall productivity while maintaining process simplicity.
Solution Approach 2:
The patent uses copying by creating multiple copies of desirable traits through inbred lines that can be systematically crossed. Instead of attempting to introduce all desirable traits in a single complex breeding experiment, the program creates replicated copies of individual traits in different inbred lines, then combines these copies through controlled crossings, simplifying the process while improving trait introduction efficiency.
Data Source
AI summary
A novel maize variety designated PH48FR and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH48FR with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH48FR 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 PH48FR or a locus conversion of PH48FR with another maize variety.