Corn Variety CV842141 Breeding for Genetic Uniformity
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Solution Overview
Problem
Current corn breeding methods 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 CV842141, which is an inbred corn plant with specific physiological and morphological characteristics, including cytoplasmic male sterility and heritable traits like herbicide tolerance and disease resistance, is 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 methods are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but the resulting hybrid plants 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 multiple generations of self-pollination, 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 genetic uniformity parameter is changed from heterogeneous (in traditional hybrid crosses) to homogeneous (in inbred lines and F1 hybrids) by controlling the pollination method and generation structure, thereby ensuring predictable performance while maintaining trait versatility.
2Stability of the object's composition
If inbred plants are developed through multiple generations of self-pollination to achieve uniformity, then homogeneous progeny are produced, but the breeding process requires extensive time and resources
Solution Approach 1:
Homozygous inbred parental lines are developed in advance through multiple generations of self-pollination and selection before the hybridization step. This preliminary action ensures that when crossing occurs, the F1 hybrids immediately exhibit uniformity without requiring additional generation cycles.
Solution Approach 2:
Once superior inbred lines are developed, they can be replicated and used repeatedly as parental lines to produce identical F1 hybrid progeny, avoiding the need to re-develop the same uniform genotype multiple times.
3Reliability
If cross-pollination is used to create hybrid vigor, then uniform F1 hybrids are produced, but the parental lines must be maintained as separate homozygous inbreds requiring complex breeding programs
Solution Approach 1:
The complexity of maintaining genetic uniformity is extracted into the separate inbred line development process, allowing the hybridization step to focus solely on producing uniform F1 progeny. The inbred lines serve as standardized building blocks that simplify the overall breeding program structure.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV842141. The invention thus relates to the plants, seeds and tissue cultures of the variety CV842141, and to methods for producing a corn plant produced by crossing a corn plant of variety CV842141 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 CV842141 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 CV842141.