CH010385 Hybrid Corn Breeding for Uniformity and Hybrid Purity
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and desirable traits such as higher yield, improved stalks, resistance to pests and diseases, and tolerance to environmental stressors, while maintaining genetic stability and commercial viability.
Innovation Solution
The development of the hybrid corn variety CH010385, which incorporates cytoplasmic and nuclear factors for male sterility, genetic modifications for traits like herbicide resistance and disease resistance, and a method of controlled cross-pollination using emasculation and bagging to ensure hybrid purity, along with tissue culture for regenerable cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional corn breeding techniques are used, then existing corn varieties can be maintained, but the development of hybrids with uniformity and desirable traits such as higher yield, improved stalks, resistance to pests and diseases, and tolerance to environmental stressors is difficult to achieve
Solution Approach 1:
The patent applies preliminary action by developing and maintaining homozygous inbred lines through multiple generations of self-pollination before creating hybrids. This ensures that the parental lines are genetically uniform and stable, which is essential for producing uniform hybrid progeny. The inbred lines are carefully selected and maintained in controlled environments to preserve their genetic integrity before use in hybrid production.
Solution Approach 2:
The patent uses controlled pollination environments as intermediaries between the inbred parent lines and the hybrid progeny. By using controlled pollination chambers or isolated fields with bagging techniques, the breeder can prevent unwanted cross-pollination and ensure that only the desired parental lines contribute to the hybrid generation, thereby maintaining hybrid purity and uniformity.
2Manufacturing precision
If controlled cross-pollination methods are used to ensure hybrid purity, then hybrid uniformity is improved, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies self-service by utilizing the natural self-pollination capability of corn plants to maintain homozygous inbred lines. The inbred lines are self-pollinated over multiple generations to achieve and maintain genetic uniformity without requiring external intervention. This natural self-service mechanism simplifies the breeding process compared to manually emasculating and hand-pollinating each plant.
Solution Approach 2:
The patent uses bagging techniques as an intermediary method to control pollination. By placing bags over the ears of inbred lines during the pollination period, the breeder can prevent unwanted cross-pollination while maintaining a relatively simple process. This physical barrier approach is simpler than the complete emasculation and hand-pollination method while still ensuring hybrid purity.
3Object-affected harmful factors
If genetic modifications are introduced to confer desirable traits, then resistance to pests and diseases is improved, but the complexity of maintaining genetic stability increases
Solution Approach 1:
The patent applies preliminary action by introducing genetic modifications into specific inbred parent lines before creating the hybrid. The desired traits (such as pest resistance or disease resistance) are incorporated into the inbred lines through controlled genetic engineering or breeding programs. Once the inbred lines are stabilized and proven to be homozygous, the genetic modifications are locked into the parental lines, ensuring they are passed uniformly to the hybrid generation without causing genetic instability.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010385. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010385, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010385 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 CH010385.