Hybrid Maize Breeding for Disease and Drought Tolerance
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Solution Overview
Problem
Existing hybrid maize varieties often lack a combination of desirable traits such as disease resistance, heat and drought tolerance, and improved agronomic qualities, which are crucial for efficient crop production and mechanical harvesting.
Innovation Solution
Development of a novel maize hybrid variety X13T109, produced by crossing specific inbred varieties, incorporating genetic loci for traits like male sterility, herbicide tolerance, and disease resistance, achieved through backcrossing and genetic transformation, with cytoplasmically-inherited traits for male sterility and regenerable tissue cultures capable of expressing desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding methods are used to develop hybrid maize varieties, then various desirable traits can be combined, but the process is time-consuming and lacks precision in trait integration
Solution Approach 1:
The patent applies parameter changes by utilizing molecular markers to precisely identify and select specific genetic loci associated with desirable traits. This molecular-level parameter identification enables accelerated breeding compared to traditional phenotypic selection, reducing the time required to develop hybrids with multiple desirable traits while maintaining precision in trait integration
Solution Approach 2:
The patent replaces traditional mechanical breeding methods (manual crossing and phenotypic selection) with molecular-based techniques including marker-assisted selection and genomic analysis. This substitution enables more precise and faster identification of trait-carrying plants, significantly reducing breeding cycle time while improving the reliability of trait combination
2Reliability
If multiple desirable traits are integrated into a single hybrid variety, then crop performance and resistance are improved, but the genetic complexity and breeding difficulty increase
Solution Approach 1:
The patent applies segmentation by breaking down the complex task of integrating multiple traits into manageable segments through marker-assisted selection. Each desirable trait is targeted with specific molecular markers, allowing independent selection and combination of trait loci. This segmented approach simplifies the breeding process by handling one trait at a time through marker-guided selection, then combining selected lines to achieve multiple traits in the final hybrid
Solution Approach 2:
The patent employs universality through the use of molecular markers that can identify multiple different traits using the same methodological framework. The marker-assisted selection system serves multiple functions: identifying disease resistance, stress tolerance, and agronomic quality traits all through the same molecular detection platform, thereby managing genetic complexity through a unified approach
3Productivity
If uniformity of plant characteristics is achieved for mechanical harvesting, then harvesting efficiency is improved, but genetic diversity and adaptability may be reduced
Solution Approach 1:
The patent applies local quality by achieving uniformity specifically in traits critical for mechanical harvesting (plant height, maturity timing, ear position) while maintaining genetic diversity in other traits through marker-assisted selection. This localized uniformity approach ensures harvesting efficiency without requiring complete genetic homogenization, allowing adaptability to be preserved in non-harvesting-related genetic regions
Data Source
AI summary
A novel maize variety designated X13T109 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 X13T109 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X13T109 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X13T109, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X13T109 are provided. Methods for producing maize varieties derived from maize variety X13T109 and methods of using maize variety X13T109 are disclosed.