Corn Variety CV126318 Breeding for Genetic Uniformity
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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 CV126318, which includes a cytoplasmic or nuclear factor for male sterility and other desirable traits like herbicide tolerance and disease resistance, is achieved through specific breeding methods and genetic transformation techniques, ensuring a homogeneous population of inbred seeds and plants with controlled pollination processes.
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 show 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, 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 multi-generation self-pollination and selection. This parameter change ensures that all plants in the F1 hybrid generation are genetically uniform, making performance predictable.
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 time and generations of selection
Solution Approach 1:
Homozygous inbred parental lines are developed in advance through extended self-pollination and selection before the hybridization step. This preliminary action ensures genetic stability is established beforehand, allowing the actual hybrid breeding to proceed efficiently without time-consuming selection in later generations.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity is increased, but the resulting population is non-uniform and performance becomes unpredictable
Solution Approach 1:
The patent applies different genetic strategies to different parts of the breeding program: homozygous inbred lines are maintained with complete genetic uniformity for parental consistency, while the F1 hybrid generation receives controlled genetic diversity from crossing distinct inbreds. This local quality approach ensures uniformity where needed (parental lines) and controlled diversity where beneficial (hybrids).
Solution Approach 2:
The breeding system uses asymmetric roles for parental lines (homozygous, uniform) and hybrid progeny (heterozygous, uniformly diverse). The parental inbreds are genetically symmetric and uniform, while the F1 hybrids are uniformly heterozygous, creating a structured asymmetry that ensures predictability.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV126318. The invention thus relates to the plants, seeds and tissue cultures of the variety CV126318, and to methods for producing a corn plant produced by crossing a corn plant of variety CV126318 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 CV126318 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 CV126318.