Maize Hybrid Trait Introgression for Uniform Yield 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, which are crucial for commercial crop production.
Innovation Solution
A novel maize hybrid variety X12T104 is developed by crossing inbred varieties and introducing genetic loci for traits like male sterility, disease resistance, and herbicide tolerance 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 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 of plant characteristics becomes difficult
Solution Approach 1:
The patent employs inbred lines that are genetically segmented and standardized through repeated self-pollination, creating uniform parental lines that can be reliably crossed to produce consistent hybrid varieties with desired traits while maintaining stability
Solution Approach 2:
The patent utilizes controlled changes in genetic parameters through selective breeding and crossing of inbred lines, adjusting genetic composition to achieve both trait diversity and phenotypic uniformity in the hybrid maize varieties
2Productivity
If mechanical harvesting is implemented, then productivity is improved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, and maturity becomes crucial and difficult to maintain
Solution Approach 1:
The patent develops inbred lines with predetermined uniform characteristics through preliminary breeding work, ensuring that when these lines are crossed to produce hybrids, the resulting plants exhibit consistent germination, stand establishment, growth rate, and maturity, which are essential for mechanical harvesting
3Adaptability or versatility
If multiple desirable traits are combined in a single hybrid, then adaptability is improved, but the complexity of breeding programs increases
Solution Approach 1:
The patent segments the breeding program into developing separate inbred lines with specific traits, then combines them through controlled crosses to create hybrids with multiple desirable traits, reducing the complexity of managing all traits simultaneously in a single breeding program
Solution Approach 2:
The patent creates inbred lines that serve multiple functions as parental materials, where each inbred line is designed to contribute specific traits that can be combined in hybrids, allowing a single inbred line to be used across multiple breeding programs
Data Source
AI summary
A novel maize variety designated X12T104 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 X12T104 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X12T104 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X12T104, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X12T104 are provided. Methods for producing maize varieties derived from maize variety X12T104 and methods of using maize variety X12T104 are disclosed.