Inbred Corn Variety CV906975 for Uniform 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 CV906975, which is an inbred corn plant with specific physiological and morphological characteristics, including the option for cytoplasmic or nuclear factors that confer male sterility or self-incompatibility, allowing for controlled pollination and the introduction of desirable traits like herbicide tolerance, insect resistance, and modified metabolic processes through genetic transformation or backcrossing.
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 results in unpredictable performance
Solution Approach 1:
The patent applies homogeneity by developing highly inbred corn lines (9 or more generations of self-pollination) to achieve uniform genetic composition. This ensures that all plants in a hybrid population are genetically identical, eliminating the non-uniformity that causes unpredictable performance while maintaining the ability to combine desirable traits through controlled crosses of these uniform inbred lines
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform populations are produced, but time to achieve homozygosity increases
Solution Approach 1:
The patent applies preliminary action by pre-developing and maintaining a library of highly inbred, uniform corn lines that have already achieved homozygosity through extensive self-pollination (9+ generations). These pre-prepared inbred lines are stored and ready for immediate use in hybrid development, eliminating the time required to develop homozygous lines from scratch each time a new hybrid is needed
3Productivity
If cross-pollination is used to produce hybrid plants, then heterozygosity and vigor are increased, but genetic uniformity is lost
Solution Approach 1:
The patent resolves this contradiction by crossing two different homozygous inbred lines (each genetically uniform within itself) to produce F1 hybrid progeny. While the F1 hybrids are heterozygous and exhibit hybrid vigor, they are all genetically identical to each other because they come from the cross of two uniform parental lines. This maintains genetic uniformity across the hybrid population while achieving the productivity benefits of heterozygosity
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV906975. The invention thus relates to the plants, seeds and tissue cultures of the variety CV906975, and to methods for producing a corn plant produced by crossing a corn plant of variety CV906975 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 CV906975 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 CV906975.