Corn Variety CV696879 Breeding for Genetic Uniformity
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like higher yield, disease resistance, and uniformity, but existing methods struggle to produce stable inbred plants with predictable performance due to genetic non-uniformity from cross-pollination, leading to unpredictable hybrid performance.
Innovation Solution
The development of the corn variety CV696879, which includes a cytoplasmic or nuclear factor for male sterility to prevent self-pollination, along with genetic modifications for traits like herbicide tolerance and disease resistance, using techniques such as backcrossing and genetic transformation to ensure uniformity and desirable characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine genetic traits, then genetic diversity and trait combination are improved, but genetic uniformity and performance predictability deteriorate
Solution Approach 1:
The breeding program segments the population into distinct inbred lines through repeated self-pollination, creating genetically uniform groups that can be systematically crossed. This segmentation allows controlled combination of traits while maintaining uniformity within each parental line.
Solution Approach 2:
The patent applies preliminary action by developing homozygous inbred plants through multiple generations of self-pollination before crossing. This preliminary homozygization ensures that when crosses are made, the resulting hybrids will have predictable and uniform performance, eliminating the genetic variability problem.
2Stability of the object's composition
If self-pollination is used to develop inbred plants, then genetic uniformity is improved, but time to achieve stable inbreds deteriorates
Solution Approach 1:
The patent uses molecular markers to copy or track specific alleles through generations during the inbreeding process. This allows breeders to monitor genetic uniformity without waiting for full phenotypic expression, significantly reducing the time required to confirm homozygosity.
Solution Approach 2:
The patent replaces the traditional mechanical/phenotypic selection method with molecular marker-based selection. Instead of waiting for plants to mature and express traits physically, DNA analysis provides immediate information about genetic composition, accelerating the inbreeding process.
3Measurement precision
If molecular marker technology is used to select inbred plants, then selection precision is improved, but device and process complexity deteriorates
Solution Approach 1:
The patent develops a universal molecular marker system that can screen for multiple traits simultaneously using the same basic protocol. This multi-functional approach allows a single set of markers to track numerous genes of interest, reducing the overall complexity despite the advanced technology used.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV696879. The invention thus relates to the plants, seeds and tissue cultures of the variety CV696879, and to methods for producing a corn plant produced by crossing a corn plant of variety CV696879 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 CV696879 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 CV696879.