Maize Inbred PH2RDY Breeding for Trait Stability
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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 stable and agronomically sound manner.
Innovation Solution
The introduction of the novel maize variety PH2RDY, 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 specific breeding methods to produce hybrid maize seeds and plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then the resulting varieties are stable and agronomically sound, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-establishing a diverse panel of inbred lines with known genetic characteristics and desirable traits before the actual breeding program begins. This pre-prepared genetic resource panel allows breeders to quickly select and combine traits without time-consuming germplasm collection and characterization during the breeding process itself, thereby reducing the overall breeding timeline while maintaining variety stability
2Productivity
If multiple desirable traits are combined in a single variety, then the variety achieves maximal yield across different conditions, but the breeding process becomes more complex and time-consuming
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct phases: (1) development and characterization of individual inbred lines with specific traits, (2) systematic evaluation and selection of compatible line combinations, and (3) targeted crossing and testing of selected combinations. This segmented approach allows for manageable handling of multiple traits while systematically working toward maximal yield through controlled combination of pre-characterized genetic components
Solution Approach 2:
The patent applies parameter changes by systematically varying key breeding parameters including the selection of specific inbred line combinations, crossing designs, and evaluation conditions. By changing and optimizing these parameters based on preliminary data and performance metrics, the breeding process efficiently identifies combinations that achieve maximal yield across different environmental conditions without unnecessary complexity
3Stability of the object's composition
If traditional breeding methods are used to introduce new traits, then the traits are stably inherited, but the time required to develop new varieties increases
Solution Approach 1:
The patent applies copying by creating and maintaining a standardized panel of inbred lines that can be repeatedly used as parental sources across multiple breeding cycles. These pre-characterized inbred lines serve as reusable genetic templates that can be systematically crossed with different partners to introduce and stabilize new traits across multiple varieties, reducing the time required for each individual variety development while ensuring stable inheritance through controlled inbreeding
Data Source
AI summary
A novel maize variety designated PH2RDY and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2RDY with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2RDY 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 PH2RDY or a locus conversion of PH2RDY with another maize variety.