Hybrid Maize Line Development for Trait Stacking Stability
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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
The development of the maize hybrid variety X06T065, produced by crossing specific inbred varieties and incorporating genetic loci for traits like male sterility, disease resistance, and altered metabolism through backcrossing and transformation, along with cytoplasmically-inherited traits to enhance hybrid performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding methods are used to combine multiple desirable traits, then the hybrid may achieve some improved traits, but uniformity and stability of plant characteristics deteriorate
Solution Approach 1:
The patent divides the breeding process into distinct stages: developing pure inbred lines with specific traits, then crossing them to create hybrids. This segmentation allows each parent line to contribute specific desirable traits while maintaining overall uniformity in the hybrid population, resolving the contradiction between trait combination and uniformity.
Solution Approach 2:
The patent performs preliminary actions by developing and stabilizing inbred parent lines before creating the hybrid. The inbred lines are subjected to multiple generations of selfing and selection to ensure genetic uniformity and stability of desired traits before crossing, which prevents uniformity deterioration in the final hybrid.
2Adaptability or versatility
If multiple traits are combined in a single hybrid through traditional breeding, then trait diversity improves, but the complexity of maintaining uniformity worsens
Solution Approach 1:
The breeding program is segmented into independent modules: inbred line development, hybrid cross design, and field testing. Each module can be optimized and executed separately, reducing the overall complexity of combining multiple traits while maintaining uniformity.
Solution Approach 2:
The patent develops universal inbred parent lines that can be crossed with multiple different partners to produce various hybrids, each with different trait combinations. This multi-functionality reduces breeding complexity by reusing proven parent lines across multiple hybrid programs.
3Stability of the object's composition
If inbred lines are used as parents to ensure genetic uniformity, then uniformity of hybrid characteristics improves, but the time required to develop stable inbred lines increases
Solution Approach 1:
The patent performs preliminary action by conducting multiple generations of selfing and selection in advance to develop stable inbred lines before hybrid creation. This preliminary stabilization of parent lines ensures uniform hybrid characteristics while acknowledging the time investment required, allowing parallel development of multiple inbred lines to offset the time loss.
Solution Approach 2:
The breeding program maintains continuous useful action by overlapping the development of multiple inbred lines simultaneously and using early-generation crossing results to inform subsequent breeding decisions, reducing the overall time to achieve stable, uniform hybrids despite the necessity of prolonged inbred line development.
Data Source
AI summary
A novel maize variety designated X06T065 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 X06T065 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X06T065 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X06T065, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X06T065 are provided. Methods for producing maize varieties derived from maize variety X06T065 and methods of using maize variety X06T065 are disclosed.