Hybrid Corn CH010980 Breeding via Male Sterility Systems
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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 CH010980, which incorporates a cytoplasmic or nuclear factor for male sterility, genetic modifications for herbicide resistance, and disease resistance, and a method for producing hybrid seeds through controlled cross-pollination, utilizing genetic transformation techniques and backcrossing to introduce specific traits like waxy starch and altered metabolism, while ensuring genetic stability and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional breeding techniques are used to develop hybrid corn varieties, then uniformity and genetic stability can be maintained, but the ability to introduce new genetic modifications and desirable traits is limited
Solution Approach 1:
The patent uses male sterility systems (cytoplasmic male sterility CMS or nuclear male sterility) as an intermediary mechanism to control pollination. This allows precise control over cross-pollination between genetically modified and non-modified plants, enabling introduction of new traits while maintaining genetic stability through controlled breeding programs.
Solution Approach 2:
The breeding program is segmented into distinct populations: male-sterile plants for controlled crossing, maintainer plants for propagating sterile lines, and restorer plants for restoring fertility. This segmentation allows independent optimization of each function while achieving overall genetic stability and trait introduction.
2Ease of operation
If self-pollination is prevented in corn breeding, then cross-pollination control is improved, but the complexity of breeding procedures increases
Solution Approach 1:
The male sterility system makes the plant self-serve the breeding program by naturally preventing self-pollination. The plant's own genetic makeup (sterile cytoplasm or nuclear genes) automatically ensures cross-pollination without requiring external intervention for emasculation or isolation, simplifying the breeding procedure despite the genetic complexity.
3Manufacturing precision
If male sterility systems are introduced to control pollination, then cross-pollination precision is improved, but the complexity of maintaining sterile lines increases
Solution Approach 1:
Different plant populations are assigned different genetic qualities: maintainer plants have normal fertility but are used to pollinate sterile lines, restorer plants have fertility-restoring genes, and sterile plants have male-sterile characteristics. This local differentiation of genetic quality allows precise control over pollination outcomes while managing maintenance complexity through specialized populations for each function.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010980. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010980, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010980 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 CH010980.