Hybrid Corn CH011144 Cytoplasmic Male Sterility Breeding
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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 CH011144, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with a method for producing hybrid seeds by crossing specific parent plants, ensures the introduction of desirable traits like herbicide resistance, disease resistance, and improved agronomic characteristics, while utilizing tissue cultures for regenerating plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-pollination is allowed in corn breeding, then genetic diversity is maintained, but hybrid seed production efficiency decreases due to inability to prevent unwanted self-pollination
Solution Approach 1:
The invention segments the pollination control function by introducing cytoplasmic male sterility in the female parent, which divides the reproductive system into sterile female and fertile male components. This segmentation enables precise control over cross-pollination while maintaining high hybrid seed production efficiency.
Solution Approach 2:
The invention uses a pollination barrier or physical isolation as an intermediary mechanism to prevent self-pollination. This intermediary structure or method reliably controls pollination without compromising the efficiency of hybrid seed production.
2Adaptability or versatility
If multiple desirable traits are combined in hybrid corn, then agronomic quality improves, but breeding complexity increases
Solution Approach 1:
The invention applies multi-functionality by developing inbred parents that simultaneously carry multiple desirable traits such as disease resistance, herbicide tolerance, and improved yield components. This universal approach allows a single hybrid to exhibit multiple agronomic qualities without proportionally increasing breeding complexity.
Solution Approach 2:
The invention uses preliminary action by pre-developing homozygous inbred parents with desired traits through several generations of self-pollination and selection before hybridization. This preliminary preparation of parental lines simplifies the overall breeding process while ensuring multiple desirable traits are combined in the final hybrid.
3Stability of the object's composition
If homozygous inbred plants are developed through self-pollination, then genetic uniformity is achieved, but time to reach stable lines increases
Solution Approach 1:
The invention employs feedback mechanisms through systematic evaluation and selection of self-pollinated progeny across generations. By continuously assessing genetic uniformity and making selective decisions, the breeding process efficiently reaches stable homozygous lines without unnecessary delays.
Solution Approach 2:
The invention accepts temporary use of multiple breeding generations and discarded intermediate lines as a necessary investment to achieve stable homozygous parents. These short-lived breeding materials are used strategically to establish genetically uniform parental lines that will serve the hybrid program long-term.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011144. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011144, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011144 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 CH011144.