Corn Variety CV016902 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 CV016902, which is an inbred corn plant with specific genetic traits such as male sterility, herbicide tolerance, and disease resistance, along with a process for producing hybrid seeds by crossing CV016902 with other distinct inbred plants to achieve uniform and desirable genetic complements.
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 resulting hybrids exhibit genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through multiple generations of self-pollination, then crossing these standardized inbreds to produce uniform hybrids. This segmentation ensures genetic stability at each stage, resolving the contradiction between trait combination and performance predictability.
Solution Approach 2:
The patent emphasizes creating homogeneous inbred parental lines through extended self-pollination and selection, ensuring all plants in a line are genetically identical. When these homogeneous inbreds are crossed, they produce uniform hybrids with predictable performance, eliminating the genetic non-uniformity problem.
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 time
Solution Approach 1:
The patent employs preliminary action by establishing and maintaining standardized inbred lines with known genetic compositions before hybrid development. These pre-developed inbreds serve as ready-to-use parental stocks, eliminating the need to develop new inbreds from scratch for each hybrid program, thus reducing overall breeding time while maintaining genetic uniformity.
3Reliability
If cross-pollination is used to produce hybrid plants, then hybrid vigor and uniformity are achieved, but the parental plants must be genetically standardized through extensive inbreeding
Solution Approach 1:
The patent applies parameter changes by controlling the inbreeding level (generations of self-pollination) to achieve complete homozygosity in parental lines. This standardized parameter (complete inbreeding) ensures that all subsequent hybrid crosses produce uniform F1 progeny, simplifying the breeding process despite the initial complexity of developing the inbreds.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV016902. The invention thus relates to the plants, seeds and tissue cultures of the variety CV016902, and to methods for producing a corn plant produced by crossing a corn plant of variety CV016902 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 CV016902 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 CV016902.