Corn Variety CV436696 Breeding for Genetic Uniformity
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and uniform germination, as existing methods often result in unpredictable performance due to genetic non-uniformity in cross-pollinated plants.
Innovation Solution
The development of the corn variety CV436696, which includes a cytoplasmic or nuclear factor for male sterility and the introduction of specific genetic loci for traits like herbicide tolerance, insect resistance, and modified metabolism, along with tissue culture methods for regenerating plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but genetic uniformity and performance predictability deteriorate
Solution Approach 1:
The invention segments the breeding process into distinct phases: developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to introduce diversity. This segmentation allows control over when genetic mixing occurs, resolving the contradiction between uniformity and diversity.
Solution Approach 2:
The invention performs preliminary action by first establishing homozygous inbred parental lines with desired traits through multiple generations of self-pollination and selection. Only after these uniform parental lines are established are they crossed to produce hybrids, ensuring both parental contribution is predictable and uniform.
2Manufacturing precision
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but time to achieve desired traits and hybrid production increases
Solution Approach 1:
The invention replaces traditional lengthy phenotypic selection with molecular marker-assisted selection. By using DNA markers linked to desired traits, breeders can identify and select plants carrying target genes much earlier and more efficiently, dramatically reducing the time required to develop uniform inbred lines while maintaining genetic precision.
3Adaptability or versatility
If multiple breeding methods are combined to develop uniform hybrids, then trait combination capability is improved, but breeding program complexity increases
Solution Approach 1:
The invention creates universal homozygous inbred parental lines that can serve multiple purposes: they can be crossed with different partners to produce various hybrids, used for trait pyramiding, and maintained as stable genetic resources. This multi-functionality reduces overall program complexity compared to developing specialized lines for each cross.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV436696. The invention thus relates to the plants, seeds and tissue cultures of the variety CV436696, and to methods for producing a corn plant produced by crossing a corn plant of variety CV436696 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 CV436696 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 CV436696.