Hybrid Corn CH793010 Breeding via Cytoplasmic Male Sterility
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH793010, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and genetic transformation techniques to introduce desired traits, and a method for crossing plants to produce hybrid seeds with controlled pollination to prevent self-pollination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait combination are improved, but genetic non-uniformity and performance unpredictability worsen
Solution Approach 1:
The patent applies preliminary action by developing and selecting homozygous inbred plants through multiple generations of self-pollination before creating the hybrid cross. This preliminary selection ensures that the parental lines are genetically uniform and stable, which then produces uniform F1 hybrid progeny when crossed, thereby resolving the contradiction between trait combination and performance uniformity
Solution Approach 2:
The patent segments the breeding process into distinct phases: developing homozygous inbred lines through self-pollination, selecting desired traits, and then crossing these inbreds to produce hybrids. This segmentation allows each phase to be optimized independently, ensuring genetic uniformity in inbreds while enabling trait combination in the final hybrid
2Reliability
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but the ability to combine diverse desirable traits worsens
Solution Approach 1:
The patent uses self-pollination as a preliminary action to create homozygous inbred lines that are genetically uniform and stable. These uniform inbreds serve as the foundation for subsequent crosses, allowing diverse desirable traits to be combined in the F1 generation while maintaining uniformity within each parental line
Solution Approach 2:
The patent merges the benefits of self-pollination (genetic uniformity) and cross-pollination (trait diversity) by first creating uniform inbred lines through self-pollination, then crossing these lines to combine diverse desirable traits in the hybrid progeny, achieving both uniformity within lines and diversity across the hybrid population
3Reliability
If extensive breeding programs are implemented to develop superior inbred plants, then desirable characteristics are improved, but breeding time and complexity worsen
Solution Approach 1:
The patent implements preliminary action by pre-selecting and developing homozygous inbred plants through multiple generations of self-pollination before the actual hybrid crossing. This preliminary work establishes genetically uniform and stable parental lines that can be crossed to produce uniform F1 hybrids, reducing the overall breeding time and complexity by preparing materials in advance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hybrid corn variety CH793010 achieves improved yield, disease resistance, and uniformity, addressing the genetic stability and trait uniformity issues in existing breeding methods, and allows for controlled seed production with enhanced agronomic characteristics.
Implementation Method 1
The hybrid corn plant CH793010 may comprise a cytoplasmic or nuclear factor that is capable of conferring male sterility or otherwise preventing self-pollination
Implementation Method 2
Natural pollination occurs in corn when wind blows pollen from the tassels to the silks that protrude from the tops of the ear shoot
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH793010. The invention thus relates to the plants, seeds and tissue cultures of the variety CH793010, and to methods for producing a corn plant produced by crossing a corn plant of variety CH793010 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 CH793010.