Corn Variety CV597869 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 drought tolerance, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV597869, which includes a cytoplasmic or nuclear factor for male sterility and additional heritable traits like herbicide tolerance and disease resistance, achieved through backcrossing and genetic transformation, ensuring uniformity and stability in inbred lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional corn breeding techniques are used to develop hybrids with desirable traits, then yield and resistance characteristics are improved, but genetic non-uniformity among hybrid plants occurs resulting in unpredictable performance
Solution Approach 1:
The patent applies preliminary action by developing and utilizing homozygous inbred lines as parent material before creating hybrids. The inbred lines are produced through multiple generations of self-pollination and selection to achieve genetic uniformity and stability. This preliminary development of uniform parental lines ensures that the resulting hybrids will have predictable and uniform performance, preventing the genetic non-uniformity that occurs when crossing heterogeneous plants.
2Stability of the object's composition
If homozygous inbred plants are developed through self-pollination and selection, then genetic uniformity is achieved, but breeding time and complexity increase
Solution Approach 1:
The patent applies parameter changes by utilizing cytoplasmic male sterility (CMS) systems to alter the pollination parameter from self-pollination to cross-pollination. This enables the production of uniform hybrid plants through controlled crosses between homozygous inbred lines, achieving genetic uniformity in the F1 generation without requiring multiple generations of self-pollination. The CMS system changes the breeding parameter to accelerate the development of uniform plant populations.
3Adaptability or versatility
If cross-pollination is used to create hybrid plants, then genetic diversity and vigor are improved, but uniformity among hybrid plants is reduced making performance unpredictable
Solution Approach 1:
The patent applies local quality by ensuring that each parental inbred line is highly uniform and homozygous at critical gene loci before crossing. By maintaining local uniformity within each parent line through rigorous selection and self-pollination, the resulting hybrid population achieves uniformity despite the genetic diversity introduced by cross-pollination. The uniformity is localized to the genetic composition of the parents, which then translates to uniform hybrid performance.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV597869. The invention thus relates to the plants, seeds and tissue cultures of the variety CV597869, and to methods for producing a corn plant produced by crossing a corn plant of variety CV597869 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 CV597869 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 CV597869.