Maize Inbred PH2D6Z Backcross Conversion for Trait Introgression
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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 breeders aim to create stable, high-yielding varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.
Innovation Solution
The introduction of the novel maize variety PH2D6Z, which involves crossing with another maize plant to introduce specific traits like male sterility, herbicide tolerance, and disease resistance through backcross conversion, genetic manipulation, and transformation, along with the use of cytoplasmic or nuclear factors to control self-pollination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then the varieties can be stable and high-yielding, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by using pre-developed inbred lines with known genetic characteristics and desirable traits as starting material. The inbred lines are prepared and characterized before the actual breeding program begins, allowing the variety development to start from a advanced stage rather than from scratch, thus reducing the overall development time while maintaining stability and yield.
Solution Approach 2:
The patent uses inbred lines as intermediary materials that bridge the gap between existing germplasm and the desired new variety. These inbred lines serve as genetic intermediaries that combine stability of pure lines with the ability to produce diverse hybrids, accelerating the breeding process while ensuring reliable performance.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety becomes more versatile and productive, but the breeding complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into manageable components: separate inbred line development programs, distinct trait introgression steps, and organized hybrid testing phases. Each inbred line is developed and characterized independently with specific traits, then combined systematically, reducing the overall complexity of managing multiple traits simultaneously.
Solution Approach 2:
The patent creates inbred lines that serve multiple functions: they act as parental lines for hybrid production, provide testing material for trait evaluation, and serve as genetic resources for future breeding programs. This multi-functionality reduces the need for separate breeding programs for each trait, simplifying the overall complexity while maintaining versatility.
Data Source
AI summary
A novel maize variety designated PH2D6Z and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2D6Z with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2D6Z 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 PH2D6Z or a locus conversion of PH2D6Z with another maize variety.