Corn Variety CV911158 for Uniform Hybrid Trait Expression
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop uniform hybrid plants with desirable traits such as increased yield, disease resistance, and pest tolerance, often resulting in unpredictable performance due to genetic non-uniformity.
Innovation Solution
The development of the corn variety CV911158, which includes specific genetic modifications and cytoplasmic traits like male sterility to prevent self-pollination, combined with controlled cross-pollination methods, ensures the production of a homogeneous population of inbred plants with enhanced traits like herbicide tolerance, insect resistance, and disease resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but genetic non-uniformity results in unpredictable performance
Solution Approach 1:
The patent employs homozygous inbred plants as parental lines to ensure genetic uniformity. By self-pollinating and selecting for type over many generations, the plants become homozygous at almost all gene loci, producing a uniform population of true breeding progeny. This homogeneity in the parental lines ensures that the resulting hybrid population is uniform and performs predictably, resolving the contradiction between trait versatility and performance reliability.
2Stability of the object's composition
If self-pollination is used to develop uniform inbred plants, then genetic uniformity is achieved, but time to develop stable lines increases
Solution Approach 1:
The patent utilizes cytoplasmic male sterility as a preliminary action to prevent self-pollination and ensure cross-pollination occurs. By introducing a cytoplasmic or nuclear factor that is capable of conferring male sterility, the breeding process is accelerated because uniform hybrid plants are produced directly through controlled cross-pollination without requiring multiple generations of selfing to achieve homozygosity. This preliminary genetic modification reduces the time needed to develop stable, uniform lines.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity and trait combination are improved, but genetic non-uniformity makes performance unpredictable
Solution Approach 1:
The patent crosses two homozygous inbred plants that are each uniform at all gene loci. Because both parental lines are genetically homogeneous, the resulting F1 hybrid population is uniformly heterozygous for many gene loci. This ensures that all plants in the hybrid population are genetically identical to one another, producing uniform performance while still combining desirable traits from both parental lines through cross-pollination.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism to control the cross-pollination process. By preventing self-pollination through male sterility, the system ensures that only controlled cross-pollination between specific parental lines occurs. This intermediary genetic factor acts as a mediator to guarantee that the cross-pollination produces uniform hybrid progeny with predictable performance, resolving the contradiction between trait combination and population uniformity.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV911158. The invention thus relates to the plants, seeds and tissue cultures of the variety CV911158, and to methods for producing a corn plant produced by crossing a corn plant of variety CV911158 with itself or with another corn plant, such as a plant of another variety. The invention further relates to corn seeds and plants produced by crossing plants of variety CV911158 with plants of another variety, such as another inbred line. The invention further relates to the inbred and hybrid genetic complements of plants of variety CV911158.