Corn Variety CV042972 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 CV042972, which includes methods for producing inbred corn plants with specific traits like male sterility, herbicide tolerance, and disease resistance, using techniques such as backcrossing and genetic transformation to introduce desired loci, ensuring a uniform and stable genetic makeup.
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 breeding methodology. This parameter change ensures predictable performance while maintaining the ability to combine desirable traits through selective crossing of inbred lines.
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 multiple generations and extensive selection time
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 subsequent F1 hybrid generation to immediately exhibit uniform performance without requiring additional generational stabilization.
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:
Genetic diversity is introduced locally at the parental inbred line level through selective breeding and crossing of distinct homozygous lines, each with specific desirable traits. The F1 hybrid population then uniformly expresses the combined traits of both parents, achieving local quality differentiation at the parental level while maintaining uniformity at the hybrid population level.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV042972. The invention thus relates to the plants, seeds and tissue cultures of the variety CV042972, and to methods for producing a corn plant produced by crossing a corn plant of variety CV042972 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 CV042972 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 CV042972.