CV827360 Corn Inbred Line Uniformity and Trait Stability
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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 pest tolerance, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV827360, which is an inbred plant with specific physiological and morphological characteristics, including cytoplasmic male sterility and heritable traits like herbicide tolerance and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring uniformity and desirable traits in progeny.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding techniques are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but the resulting hybrids exhibit genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination and selection, then crossing these standardized inbreds to produce uniform F1 hybrids. This segmentation ensures genetic uniformity within each phase while allowing trait combination across phases.
Solution Approach 2:
The patent changes the genetic uniformity parameter by enforcing homozygosity in parental inbred lines through multiple generations of self-pollination and selection. This parameter change ensures that all plants within an inbred line are genetically identical, making hybrid performance predictable when crossed with another standardized inbred.
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 breeding process requires extensive generations of selection and crossing
Solution Approach 1:
Homozygous inbred parental lines are developed in advance through multiple generations of self-pollination and selection before the hybrid crossing stage. This preliminary action ensures genetic uniformity is established beforehand, allowing the actual hybrid production to proceed efficiently without repeated selection cycles.
Solution Approach 2:
Once homozygous inbred lines are established, they serve as standardized genetic copies that can be repeatedly crossed to produce uniform F1 hybrids. The inbred lines act as stable genetic templates that can be propagated and used across multiple breeding seasons, reducing the need to restart the homogenization process.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity is increased, but the resulting population is non-uniform with unpredictable performance
Solution Approach 1:
The patent applies different genetic uniformity requirements to different parts of the breeding system: parental inbred lines are maintained as highly uniform homozygous populations, while F1 hybrids exhibit controlled heterozygosity. This local differentiation of genetic quality allows uniformity where needed (parentals) while maintaining desired diversity (hybrids).
Solution Approach 2:
The breeding system uses asymmetric parental lines with specific genetic compositions, where each inbred parent contributes different but complementary traits. This asymmetric design ensures that F1 hybrids receive balanced genetic contributions that produce uniform performance, unlike symmetric crosses that might produce segregation.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV827360. The invention thus relates to the plants, seeds and tissue cultures of the variety CV827360, and to methods for producing a corn plant produced by crossing a corn plant of variety CV827360 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 CV827360 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 CV827360.