Corn Variety CV282996 Male Sterility Hybrid Uniformity
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and uniform germination, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV282996, which includes a cytoplasmic or nuclear factor for male sterility and other desirable traits like herbicide tolerance and disease resistance, is achieved through backcrossing and genetic transformation techniques, ensuring a homogeneous population of inbred seeds and plants with specific genetic loci.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional corn breeding techniques are used to develop hybrids, then various desirable traits can be combined, but genetic non-uniformity results in unpredictable performance
Solution Approach 1:
The patent employs male sterility systems (cytoplasmic male sterility CMS or nuclear male sterility) to ensure complete pollination control in hybrid seed production. This creates genetic homogeneity by preventing any self-pollination or unintended cross-pollination, ensuring all plants in the hybrid population have identical genetic composition. The male sterile trait guarantees uniform germination, uniform growth rate, and predictable performance while maintaining the ability to combine multiple desirable traits from different parental lines.
2Manufacturing precision
If inbred plants are developed through pedigree breeding and recurrent selection, then uniform hybrids can be produced, but the process requires physical emasculation and is time-consuming
Solution Approach 1:
The patent extracts the emasculation step from the hybrid seed production process by introducing male sterility traits. Instead of manually or mechanically removing male flowers (emasculation), the male sterile plants naturally lack functional male reproductive capability. This extraction of the emasculation operation dramatically reduces labor requirements and breeding development time while maintaining complete pollination control and hybrid uniformity.
Solution Approach 2:
The male sterility trait is introduced into the parental lines before hybrid seed production begins. This preliminary genetic modification ensures that when the hybrid cross is made, pollination control is already established without requiring any emasculation operations during the actual seed production phase. The male sterile parent line is prepared in advance with the appropriate cytoplasmic or nuclear sterility factors, making the subsequent crossing process efficient and rapid.
3Ease of manufacture
If self-pollination is allowed in corn breeding, then breeding operations are simpler, but genetic non-uniformity makes performance unpredictable
Solution Approach 1:
The patent introduces male sterility as an intermediary mechanism to control pollination. The male sterile trait acts as a mediator that prevents self-pollination while allowing controlled cross-pollination. This intermediary genetic factor ensures that only desired crosses occur between specific parental lines, maintaining genetic uniformity and predictable performance while keeping breeding operations relatively simple through natural pollination processes.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV282996. The invention thus relates to the plants, seeds and tissue cultures of the variety CV282996, and to methods for producing a corn plant produced by crossing a corn plant of variety CV282996 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 CV282996 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 CV282996.