Corn Variety CV509109 Homogeneous Hybrid Production
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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 uniformity, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV509109, which includes methods for producing inbred corn plants with specific traits like male sterility, herbicide tolerance, and disease resistance, using cytoplasmic or nuclear factors, and genetic loci introduced through backcrossing or genetic transformation, ensuring a homogeneous population of seeds and plants with consistent morphological and physiological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional corn breeding techniques are used to develop hybrids, then various desirable traits can be combined, but genetic non-uniformity among hybrid plants results in unpredictable performance
Solution Approach 1:
The patent applies homogeneity by using male-sterile inbred plants with uniform genetic composition to ensure all hybrid plants in a field are genetically identical. This is achieved through cytoplasmic male sterility (CMS) systems where the female parent cannot self-pollinate, forcing cross-pollination with genetically uniform male parents, thereby producing homogeneous hybrid progeny with predictable performance
2Manufacturing precision
If inbred plants are developed through self-pollination and selection, then uniform populations can be produced, but physical emasculation is required for hybrid seed production
Solution Approach 1:
The patent applies self-service by utilizing cytoplasmic male sterility where the plant's own cytoplasm prevents self-pollination. The female parent plant automatically prevents its own self-fertilization through CMS, eliminating the need for external emasculation procedures. This self-service mechanism ensures uniform hybrid seed production without manual or mechanical intervention for flower removal
3Reliability
If homozygous inbred plants are crossed to produce uniform hybrids, then predictable performance is achieved, but the breeding process becomes complex and time-consuming
Solution Approach 1:
The patent introduces male sterility as an intermediary mechanism that simplifies the breeding process. Instead of directly managing complex self-pollination and selection procedures, the CMS system acts as a mediator that automatically ensures cross-pollination between designated parents, reducing breeding complexity while maintaining hybrid uniformity and reliability
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV509109. The invention thus relates to the plants, seeds and tissue cultures of the variety CV509109, and to methods for producing a corn plant produced by crossing a corn plant of variety CV509109 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 CV509109 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 CV509109.