Hybrid Maize X13R119 Breeding for Stable Multi-Trait Inheritance
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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 X13R119 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 methods are used to combine multiple desirable traits, then trait diversity increases, but uniformity and stability of plant characteristics deteriorate
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing inbred lines with specific traits, then crossing them to create hybrids. This segmentation allows each parent line to be highly uniform and stable, while the hybrid combines diverse traits from both parents, resolving the contradiction between trait diversity and uniformity.
Solution Approach 2:
The patent applies local quality by creating inbred lines that are highly uniform within themselves (local uniformity) but differ from each other in specific traits. When crossed, these lines produce hybrids that exhibit both the uniformity of inbreds and the diversity of combined traits, allowing different regions of the genetic composition to have different properties.
2Adaptability or versatility
If multiple traits are combined in a single hybrid, then agronomic quality improves, but the complexity of breeding processes increases
Solution Approach 1:
The breeding program is segmented into developing specialized inbred lines (each optimized for specific traits) and then combining them through controlled crosses. This segmentation simplifies the overall process by breaking down the complex task of combining multiple traits into manageable stages, where each stage focuses on specific objectives.
Solution Approach 2:
The patent creates inbred lines that serve multiple functions: they can be used as parents for hybrid production, maintained as stock for future breeding, and evaluated for specific traits. This multi-functionality reduces breeding complexity by maximizing the utility of each developed line across multiple breeding objectives.
3Productivity
If mechanical harvesting is implemented, then productivity increases, but requirements for uniformity of plant characteristics increase
Solution Approach 1:
The patent creates hybrids with uniform plant characteristics (height, maturity, growth rate) that are specifically optimized for mechanical harvesting. By applying local quality principles to these uniformity traits while maintaining trait diversity through hybridization, the patent enables both high productivity through mechanical harvesting and the precision required for uniform plant characteristics.
Data Source
AI summary
A novel maize variety designated X13R119 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 X13R119 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X13R119 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X13R119, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X13R119 are provided. Methods for producing maize varieties derived from maize variety X13R119 and methods of using maize variety X13R119 are disclosed.