Hybrid Maize X11T096 Breeding 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
A novel maize hybrid variety X11T096 is developed by crossing two inbred varieties, incorporating genetic loci for traits like male sterility, disease resistance, and herbicide tolerance through backcrossing and transformation, and utilizing cytoplasmic inheritance for male sterility to enhance hybrid performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding is used to develop new hybrid maize varieties, then desirable traits such as disease resistance, heat and drought tolerance, and improved yield can be combined, but maintaining uniformity and stability in plant characteristics becomes difficult
Solution Approach 1:
The patent divides the complex breeding process into distinct stages: developing inbred lines with specific traits, crossing them to create F1 hybrids, and maintaining separate breeding populations. This segmentation allows systematic combination of multiple desirable traits (disease resistance, heat tolerance, drought tolerance, improved yield) while controlling the genetic background to maintain uniformity in plant characteristics like germination, stand establishment, growth rate, and maturity.
Solution Approach 2:
The patent performs preliminary inbreeding and selection to create stable inbred lines with desired traits before crossing them to produce F1 hybrids. This preliminary action ensures that the parent lines have uniform and stable characteristics, which then translate to consistent F1 hybrid performance. The inbred lines are developed through multiple generations of selfing and selection to achieve genetic uniformity before the actual hybridization.
2Productivity
If mechanical harvesting is implemented, then crop production efficiency is improved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, and maturity becomes critical and difficult to maintain
Solution Approach 1:
The patent modifies key agronomic parameters of the maize plants through selective breeding and genetic modification to optimize for mechanical harvesting. This includes selecting for specific plant heights, ear positions, kernel characteristics, and growth rates that are ideal for mechanical harvest. The F1 hybrid variety is developed with controlled parameters to ensure uniformity in these characteristics across the crop population, enabling efficient mechanical harvesting while maintaining plant characteristic consistency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hybrid maize variety X11T096 exhibits improved resistance to diseases and insects, better agronomic quality, and increased yield, while maintaining uniformity and stability across different growing conditions.
Implementation Method 1
A cytoplasmically-inherited trait has been introduced into the hybrid plant. Such cytoplasmically-inherited traits are passed to progeny through the female parent in a particular cross. An exemplary cytoplasmically-inherited trait is the male sterility trait.
Implementation Method 2
Cytoplasmic-male sterility (CMS) is a pollen abortion phenomenon determined by the interaction between the genes in the cytoplasm and the nucleus. Alteration in the mitochondrial genome and the lack of restorer genes in the nucleus will lead to pollen abortion.
Data Source
AI summary
A novel maize variety designated X11T096 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 X11T096 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X11T096 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X11T096, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X11T096 are provided. Methods for producing maize varieties derived from maize variety X11T096 and methods of using maize variety X11T096 are disclosed.