Hybrid Maize X07T069 Breeding for Stable Trait Introgression
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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 X07T069 is developed by crossing two inbred varieties, incorporating genetic loci for traits like male sterility, herbicide tolerance, and disease resistance, and utilizing cytoplasmic inheritance for traits like CMS, with regenerable tissue cultures to maintain desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding is used to develop hybrid maize, then desirable traits such as disease resistance, heat and drought tolerance, and improved yield can be combined, but uniformity of plant characteristics and stability across generations may be compromised
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing inbred lines with specific traits, crossing them to create F1 hybrids, and maintaining separate gene pools for different characteristics. This segmentation allows systematic combination of desirable traits while preserving uniformity through controlled breeding stages.
Solution Approach 2:
The patent merges multiple desirable traits into a single hybrid variety by crossing inbred lines that each possess specific characteristics (disease resistance, heat tolerance, drought tolerance, uniformity). The F1 hybrid combines these traits through genetic recombination, achieving both adaptability and uniformity simultaneously.
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 crucial and harder to maintain
Solution Approach 1:
The patent modifies key growth parameters through selective breeding: controlling germination timing, stand establishment rate, growth rate, and maturity date to fall within specific ranges that ensure uniformity. These parameter changes enable mechanical harvesting efficiency while maintaining plant characteristic uniformity.
Solution Approach 2:
The patent implements feedback mechanisms through continuous monitoring of plant characteristics during breeding and cultivation. Performance data from field trials and mechanical harvesting operations is used to select and refine inbred lines, ensuring uniformity is maintained while productivity is optimized.
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 X07T069 exhibits enhanced resistance to diseases and insects, improved yield, and better agronomic quality, ensuring uniformity and stability across generations, making it suitable for commercial cultivation.
Implementation Method 1
A hybrid maize plant of the variety designated X07T069 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.
Implementation Method 2
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 3
Maize, Zea mays L., can be referred to as maize or corn
Data Source
AI summary
A novel maize variety designated X07T069 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 X07T069 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X07T069 through backcrossing or genetic transformation, and to the maize seed, plant and plant part produced thereby are described. Maize variety X07T069, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X07T069 are provided. Methods for producing maize varieties derived from maize variety X07T069 and methods of using maize variety X07T069 are disclosed.