Hybrid Corn CH011127 Stress-Induced Male Sterility
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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 efficiency of trait introduction and hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH011127, which incorporates genetic modifications and cytoplasmic male sterility traits, along with advanced breeding methods like backcrossing and genetic transformation, to introduce traits like herbicide resistance, disease resistance, and improved agronomic characteristics, while preventing self-pollination through specific pollination techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional breeding methods are used to develop hybrid corn varieties, then genetic diversity and trait combination are improved, but self-pollination occurs which reduces hybrid seed production efficiency
Solution Approach 1:
The patent removes the male reproductive capability from the female parent by inducing male sterility through stress treatment (heat, drought, or nutrient stress). This extraction of the male function prevents self-pollination in the female parent while allowing controlled cross-pollination with male parent pollen, thereby resolving the contradiction between maintaining genetic diversity and preventing unwanted self-pollination.
Solution Approach 2:
The patent introduces stress treatment as an intermediary mechanism that temporarily induces male sterility in the female parent during the critical pollination period. This intermediary state allows breeders to control pollination events precisely - the female parent cannot self-pollinate under stress, but can be artificially pollinated with selected male parent pollen, thus improving hybrid seed production efficiency while maintaining trait combination capabilities.
2Productivity
If male sterility traits are introduced to prevent self-pollination, then hybrid seed production efficiency is improved, but genetic stability may be compromised
Solution Approach 1:
The patent employs dynamic male sterility induction through environmental stress treatment rather than permanent genetic modification. The female parent maintains normal fertility under optimal conditions but becomes male-sterile under stress during the pollination period. This dynamic approach allows the plant to switch between fertile and sterile states as needed, preserving genetic stability in the germplasm while achieving hybrid seed production efficiency when required.
Solution Approach 2:
The patent changes environmental parameters (temperature, water availability, nutrient levels) to induce temporary male sterility in the female parent. By manipulating these external parameters rather than altering the genetic composition, the system achieves controlled male sterility that prevents self-pollination without compromising the genetic stability of the plant material. The genetic makeup remains unchanged, only the expression of fertility is temporarily modified.
3Productivity
If advanced breeding techniques like genetic transformation are used, then trait introduction efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs self-service mechanisms where the female parent's own physiological response to environmental stress induces male sterility. Rather than requiring complex external intervention or genetic transformation systems, the plant naturally responds to stress conditions by becoming male-sterile. This self-service approach achieves efficient trait introduction and hybrid seed production without the need for sophisticated breeding infrastructure or costly genetic modification protocols.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011127. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011127, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011127 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 CH011127.