Hybrid Corn CH010987 Breeding via 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 introduction of new genetic modifications and traits.
Innovation Solution
The development of the hybrid corn variety CH010987, which incorporates a cytoplasmic or nuclear factor for male sterility and genetic modifications conferring traits like herbicide resistance, disease resistance, and altered metabolism, using techniques like backcrossing and genome editing to introduce specific alleles and transgenes, ensuring cross-pollination and maintaining genetic stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-pollination is prevented through male sterility mechanisms, then cross-pollination and hybrid variety development are improved, but the complexity of breeding programs increases due to the need for maintaining sterility systems
Solution Approach 1:
The patent employs cytoplasmic male sterility (CMS) as an intermediary mechanism to prevent self-pollination. The CMS trait acts as a mediator that naturally blocks pollen production in female parent plants, eliminating the need for manual emasculation and simplifying hybrid seed production while maintaining controlled cross-pollination
Solution Approach 2:
The patent extracts and utilizes specific cytoplasmic factors (cms1, cms2, cms3) that confer male sterility. By isolating and deploying these specific sterility-inducing cytoplasmic elements, the breeding program achieves automatic self-pollination prevention without requiring complex mechanical or chemical intervention systems
2Adaptability or versatility
If genetic modifications are introduced to confer desirable traits, then agronomic quality and resistance are improved, but genetic stability may be compromised
Solution Approach 1:
The patent performs preliminary genetic modifications in the inbred parent lines before hybridization. Desirable traits such as herbicide resistance (e.g., imidazolinone, sulfonylurea, glyphosate resistance) and disease resistance are pre-introduced and stabilized in the parental inbreds through multiple generations of selection, ensuring these traits are fixed and stable before combining them in the hybrid
Solution Approach 2:
The patent merges multiple stabilized genetic traits from different inbred parents into a single hybrid variety. The hybrid combines resistance traits, yield characteristics, and agronomic qualities from both parents, achieving superior adaptability while maintaining genetic stability through the uniformity of the F1 hybrid generation
3Manufacturing precision
If uniformity in germination and growth is achieved through inbred lines, then phenotypic consistency is improved, but the introduction of new traits becomes more difficult
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing uniform inbred parent lines with specific stabilized traits, then combining them through controlled cross-pollination. This segmentation allows each parent to be optimized for uniformity while the hybrid combination introduces new trait combinations, resolving the conflict between uniformity and trait diversity
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010987. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010987, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010987 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 CH010987.