Hybrid Corn CH011173 Male Sterility and CRISPR Trait Intro
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the introduction of new genetic modifications and traits.
Innovation Solution
The development of the hybrid corn variety CH011173, which incorporates a cytoplasmic or nuclear factor for male sterility, genetic modifications for herbicide resistance, and disease resistance, and uses genome editing techniques like CRISPR-Cas systems to introduce specific traits, allowing for controlled cross-pollination and stable trait introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If natural pollination is used in corn breeding, then cross-pollination occurs between different plants, but self-pollination cannot be prevented, limiting the introduction of new genetic modifications
Solution Approach 1:
The patent removes the male reproductive capability (pollen production) from the plant by introducing male sterility genes, effectively extracting the self-pollination function. This allows complete control over cross-pollination and introduces reliability in genetic modification by preventing unintended self-pollination while maintaining adaptability for controlled breeding programs
Solution Approach 2:
The patent uses male sterility as an intermediary mechanism to control pollination. By creating plants that cannot self-pollinate but can be controlled to cross-pollinate only with specific varieties, it mediates between genetic stability requirements and the need for introducing new genetic modifications through controlled hybridization
2Productivity
If hybrid corn varieties are developed through traditional breeding methods, then uniformity in germination and growth is achieved, but the process is time-consuming and limits rapid introduction of new traits
Solution Approach 1:
The patent applies preliminary action by pre-establishing male sterility in parent lines before hybridization. This preliminary genetic modification ensures that when hybrids are produced, they will exhibit uniformity in germination and growth while accelerating the breeding process, as the sterility trait is already in place and does not require additional selection steps
Solution Approach 2:
The patent changes the genetic parameter of male fertility to sterile in parent lines, which fundamentally alters the breeding process. This parameter change enables rapid production of uniform hybrids with consistent germination and growth characteristics, significantly improving productivity while maintaining manufacturing precision through controlled cross-pollination
3Ease of operation
If male fertile plants are used, then self-pollination occurs naturally, but controlled cross-pollination and trait introduction are limited
Solution Approach 1:
The patent converts the harmful factor of uncontrolled self-pollination into a beneficial controlled cross-pollination system. By introducing male sterility, it eliminates the harmful self-pollination while creating a system where cross-pollination can be precisely controlled and directed, turning a breeding limitation into an advantage for introducing specific genetic traits
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011173. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011173, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011173 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH011173.