Hybrid Corn CH011126 Cytoplasmic Male Sterility Seed Production
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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 hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH011126, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with a process for crossing parent plants to produce hybrid seeds, utilizing genetic loci that confer traits like herbicide resistance and disease resistance, and employing tissue culture techniques to regenerate plants with specific morphological and physiological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional 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 extracts and removes the male reproductive capability from the female parent plant through cytoplasmic male sterility (CMS), eliminating the possibility of self-pollination in the hybrid seed production field. This allows 100% of the plants to serve as reliable female parents without needing manual emasculation.
Solution Approach 2:
The patent introduces a restorer line with specific nuclear genes that act as an intermediary to restore male fertility in the F1 hybrid generation. This mediator approach allows controlled fertility restoration while maintaining sterility during seed production, solving the contradiction between sterility for hybridization and fertility for grain production.
2Productivity
If manual emasculation is performed to prevent self-pollination, then hybrid seed production is enabled, but labor costs and production complexity increase
Solution Approach 1:
The patent employs cytoplasmic male sterility in the female parent, which is a self-service mechanism that automatically prevents self-pollination without requiring external intervention. The plants themselves exhibit the sterility trait, eliminating the need for manual emasculation operations and reducing labor requirements.
3Stability of the object's composition
If inbred lines are developed through multiple generations of selfing, then genetic uniformity is improved, but time to maturity and breeding duration increase
Solution Approach 1:
The patent performs preliminary development of highly inbred, genetically uniform lines in the breeding program before deploying them in hybrid seed production. This preliminary action ensures that when the hybrid is released, both parents have already achieved the desired genetic uniformity, avoiding the need for extended selfing after hybridization.
4Productivity
If hybrid varieties are developed to combine multiple desirable traits, then yield and resistance are improved, but maintaining genetic stability becomes more difficult
Solution Approach 1:
The patent segments the genetic material into two separate inbred parent lines, each contributing specific traits. This segmentation allows independent selection and optimization of traits in each parent line while maintaining their genetic stability through true-breeding homozygosity, and combines them in a predictable F1 hybrid with uniform phenotype.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011126. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011126, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011126 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 CH011126.