Maize Hybrid X13V082 Trait Introgression for Stable 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 commercial crops.
Innovation Solution
A novel maize hybrid variety X13V082 is developed by crossing inbred varieties and introducing 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 new maize varieties, then desirable traits such as disease resistance and yield can be combined, but uniformity of plant characteristics and stability across generations becomes difficult to maintain
Solution Approach 1:
The patent employs inbred lines (highly homozygous lines) as parents to create hybrids. By segmenting the breeding program into distinct inbred parent lines with specific desirable traits, the patent achieves both trait combination and uniformity in the F1 hybrid generation, resolving the contradiction between adaptability and stability.
Solution Approach 2:
The patent utilizes cytoplasmic male sterility (CMS) systems that change the genetic parameters of the plant by introducing mitochondrial genes that confer male sterility. This parameter change enables controlled pollination and maintains uniformity while allowing trait combination through specific parental crosses.
2Productivity
If mechanical harvesting is implemented, then efficiency is improved, but uniformity of plant characteristics such as maturity and height becomes critical
Solution Approach 1:
The patent develops specific inbred parent lines with standardized plant characteristics (uniform height, maturity timing) that segment the genetic variability. When these standardized inbreds are crossed to produce F1 hybrids, the resulting uniformity in plant characteristics enables synchronized mechanical harvesting while maintaining high productivity.
3Productivity
If multiple desirable traits are combined in a single hybrid, then agricultural performance is improved, but the complexity of breeding programs increases
Solution Approach 1:
The patent performs preliminary breeding actions by developing and stabilizing inbred parent lines with specific desirable traits before creating the final hybrid. This preliminary action of creating uniform inbreds simplifies the subsequent hybridization process and reduces overall breeding program complexity while achieving multiple desirable traits in the F1 generation.
Solution Approach 2:
The patent uses inbred lines as intermediary elements that carry specific desirable traits. These inbreds serve as mediators between the breeding program's goals and the final hybrid variety, allowing complex trait combinations to be achieved through systematic crosses of pre-characterized parent lines rather than direct complex breeding.
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 X13V082 exhibits enhanced resistance to diseases and insects, improved agronomic quality, and increased yield, while maintaining uniformity and stability across generations.
Implementation Method 1
The hybrid maize variety X13V082 is provided comprising an added heritable trait. The heritable trait may be a genetic locus that is a dominant or recessive allele. In certain embodiments, the genetic locus confers traits such as, for example, male sterility, waxy starch, reduced lignin, herbicide tolerance or resistance, insect resistance, resistance to bacterial, fungal, nematode or viral disease, and altered or modified fatty acid, phytate, protein or carbohydrate metabolism.
Implementation Method 2
Processes are provided for making a maize plant containing in its genetic material one or more traits introgressed into X13V082 through locus conversion, backcrossing and/or transformation.
Implementation Method 3
The genetic locus may be a naturally occurring maize gene introduced into the genome of a parent of the variety by backcrossing, a natural or induced mutation, or a transgene introduced through genetic transformation techniques. When introduced through transformation, a genetic locus may comprise one or more transgenes integrated at a single chromosomal location.
Implementation Method 4
A hybrid maize plant of the variety designated X13V082 is provided, wherein 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. Cytoplasmic-male sterility (CMS) is a pollen abortion phenomenon determined by the interaction between the genes in the cytoplasm and the nucleus.
Implementation Method 5
The goal of hybrid development is to combine, in a single hybrid, various desirable traits. For field crops, these traits may include resistance to diseases and insects, resistance to heat and drought, reducing the time to crop maturity, greater yield, and better agronomic quality. With mechanical harvesting of many crops, uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, and plant and ear height is important.
Data Source
AI summary
A novel maize variety designated X13V082 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 X13V082 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X13V082 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X13V082, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X13V082 are provided. Methods for producing maize varieties derived from maize variety X13V082 and methods of using maize variety X13V082 are disclosed.