Corn Variety CV011880 Breeding for Genetic Homogeneity
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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 CV011880, 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 other desirable traits like herbicide tolerance and disease resistance, allowing for controlled pollination and hybrid seed production.
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 in a single variety, but the performance becomes unpredictable due to genetic non-uniformity among hybrid plants
Solution Approach 1:
The patent applies homogeneity by developing highly inbred corn lines through multiple generations of self-pollination and selection, achieving near-complete homozygosity (greater than 98% homozygous loci). This ensures that all plants within an inbred line are genetically uniform, and when crossed, produce hybrid progeny with consistent and predictable performance. The method involves rigorous phenotypic selection and molecular marker-assisted selection to maintain genetic homogeneity throughout the breeding process.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform true-breeding progeny are produced, but the process requires many generations and extensive selection
Solution Approach 1:
The patent applies preliminary action by implementing systematic selection criteria early in the breeding process, including phenotypic evaluation of key traits and molecular marker screening in initial generations. This preliminary identification and selection of superior individuals accelerates the accumulation of desired genes and reduces the number of generations needed to achieve homozygosity and stabilize the inbred line.
Solution Approach 2:
The patent employs feedback mechanisms through continuous phenotypic monitoring and molecular marker analysis across generations. Breeders use this feedback information to make informed selection decisions, adjusting breeding strategies based on observed performance and genetic progress, thereby optimizing the rate of homozygosity achievement and reducing overall breeding time.
3Ease of operation
If cross-pollination is used to produce hybrid plants, then heterozygous uniform populations are created, but pollen contamination from different plants can occur
Solution Approach 1:
The patent applies segmentation by dividing the breeding population into spatially isolated groups during cross-pollination. Male and female parent lines are planted in separate blocks or rows with physical barriers or sufficient distance between them to prevent unintended pollen flow. This spatial segmentation ensures that only designated cross-pollination events occur, maintaining pollen purity and hybrid seed quality.
Solution Approach 2:
The patent uses intermediary measures such as male-sterile lines or chemical sterilants to control pollination. Male-sterile female parents cannot receive unwanted pollen, and chemical agents can temporarily sterilize pollen from non-target plants. These intermediaries act as protective mechanisms to ensure that only desired cross-pollination occurs between specific parental lines.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV011880. The invention thus relates to the plants, seeds and tissue cultures of the variety CV011880, and to methods for producing a corn plant produced by crossing a corn plant of variety CV011880 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 CV011880 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 CV011880.