Hybrid Maize Breeding With CMS for Stable Multi-Trait Uniformity
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Solution Overview
Problem
Existing hybrid maize development methods struggle to combine desirable traits such as disease resistance, heat and drought tolerance, and improved yield while maintaining uniformity and stability in plant characteristics, which are crucial for commercial crop production.
Innovation Solution
A novel maize hybrid variety, X11T094, is developed by crossing two inbred varieties and incorporating genetic loci for traits like male sterility, disease resistance, and herbicide tolerance through backcrossing and transformation, with cytoplasmically-inherited traits ensuring trait inheritance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding is used to develop hybrid maize, then various desirable traits can be combined, but maintaining uniformity and stability in plant characteristics becomes difficult
Solution Approach 1:
The patent segments the breeding process into distinct stages: developing inbred lines with specific traits, then crossing them to create hybrids. This segmentation allows systematic combination of traits while maintaining control over uniformity through structured breeding protocols.
Solution Approach 2:
The patent utilizes cytoplasmic male sterility (CMS) as a parameter change mechanism to control pollination and ensure uniform hybrid seed production. By changing the reproductive parameter through CMS, the patent achieves both trait combination and uniformity in plant characteristics.
2Productivity
If mechanical harvesting is implemented, then productivity increases, but uniformity of plant characteristics becomes crucial and harder to maintain
Solution Approach 1:
The patent employs cytoplasmic male sterility to control the reproductive parameters of the crop, ensuring uniform plant characteristics that are essential for mechanical harvesting. This parameter change in the reproductive system enables both high productivity through mechanical harvesting and maintained uniformity.
3Adaptability or versatility
If multiple traits are introgressed through backcrossing and transformation, then adaptability improves, but process complexity increases
Solution Approach 1:
The patent segments the trait introduction process into separate operations: backcrossing for certain traits and transformation for others. This segmentation manages the complexity by dividing the multi-step introgression process into manageable, distinct procedures.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism that simplifies the breeding process. CMS acts as a mediator that enables controlled cross-pollination and facilitates the introduction of multiple traits through backcrossing and transformation without increasing overall process complexity.
Data Source
AI summary
A novel maize variety designated X11T094 and seed, plants and plant parts thereof are produced by crossing inbred maize varieties. Methods for producing a maize plant by crossing hybrid maize variety X11T094 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X11T094 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X11T094, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X11T094 are provided. Methods for producing maize varieties derived from maize variety X11T094 and methods of using maize variety X11T094 are disclosed.