Maize Inbred 1PLLG90 Backcross Conversion for Trait Stability
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.
Innovation Solution
The development of the innovative maize plant variety designated 1PLLG90, which incorporates genetic modifications and cytoplasmic traits to enhance resistance to diseases, insects, and abiotic stress, along with improved agronomic characteristics, through processes like backcross conversion, genetic manipulation, and transformation, and the introduction of heritable traits like male sterility and herbicide tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to combine desirable traits, then the maize variety can be developed with multiple traits, but the development time becomes excessively long (6-12 years)
Solution Approach 1:
The patent applies preliminary action by pre-selecting and pre-characterizing parent lines with desirable traits before the actual breeding process. The parent lines are evaluated for multiple traits including disease resistance, yield potential, and agronomic characteristics in advance, allowing the breeding program to start with a ready-to-use genetic foundation that reduces the overall development time while maintaining comprehensive trait combination.
Solution Approach 2:
The patent implements feedback mechanisms through continuous evaluation and selection cycles. Performance data from field trials and research plots are systematically collected and fed back into the breeding program to refine selection criteria. This feedback loop allows for iterative improvement of parent line selection and crossing strategies, optimizing the time required to develop varieties with multiple desirable traits.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the maize variety becomes more versatile and resilient, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into distinct, manageable modules. Each parent line is developed and characterized independently with specific focus on particular traits such as disease resistance, yield, or agronomic characteristics. This modular approach allows for systematic combination of traits through controlled crosses while maintaining organizational simplicity and reducing overall program complexity.
Solution Approach 2:
The patent utilizes universality by developing parent lines that serve multiple functions within the breeding program. Selected parent lines are evaluated for their ability to contribute multiple desirable traits simultaneously, making them universal building blocks that can be used across different breeding objectives. This multi-functionality reduces the number of separate breeding programs needed and simplifies the overall complexity.
3Reliability
If the breeding program focuses on achieving high yield and stability, then the maize variety becomes agronomically sound, but the time required to achieve stable performance across different environments increases
Solution Approach 1:
The patent applies preliminary action by conducting extensive evaluation of parent lines across multiple environments and years before final variety release. Performance stability is assessed in advance through research plots and field trials, allowing the breeding program to identify and select parent lines with consistent performance characteristics. This pre-validation reduces the time needed to achieve and verify yield stability in the final variety.
Solution Approach 2:
The patent implements feedback through continuous monitoring and evaluation of yield performance across different environments. Data from research plots, field trials, and farmer observations are systematically collected and analyzed to assess stability. This feedback mechanism allows for real-time adjustment of selection criteria and breeding strategies, accelerating the time to achieve reliable, stable yield performance without compromising agricultural soundness.
Data Source
AI summary
A novel maize variety designated 1PLLG90 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PLLG90 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PLLG90 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 1PLLG90 or a locus conversion of 1PLLG90 with another maize variety.