Corn Variety CV952947 Breeding for Uniform Inbred Lines
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods struggle to develop stable inbred plants with predictable performance due to genetic non-uniformity from cross-pollination, leading to unpredictable hybrid traits.
Innovation Solution
The development of the corn variety CV952947, which includes a cytoplasmic or nuclear factor for male sterility to prevent self-pollination, along with specific genetic loci for traits like herbicide tolerance and disease resistance, and the use of tissue cultures to regenerate plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used in corn breeding, then genetic diversity is improved, but uniformity of the plant population deteriorates
Solution Approach 1:
The breeding population is segmented into distinct inbred lines that are genetically homogeneous within each line but differ between lines. This segmentation allows maintenance of genetic diversity across lines while ensuring uniformity within each line for predictable hybrid performance.
Solution Approach 2:
Inbred plants are developed through multiple generations of self-pollination before crossing to ensure homozygosity and uniformity. This preliminary action of creating uniform parental lines prevents genetic non-uniformity in the resulting hybrid population.
2Stability of the object's composition
If self-pollination is used to develop inbred plants, then uniformity of the plant population is improved, but genetic diversity deteriorates
Solution Approach 1:
The breeding program segments the total genetic diversity into multiple separate inbred lines, each with high internal uniformity but distinct from other lines. This allows uniformity within lines while preserving overall genetic diversity across the breeding program.
Solution Approach 2:
Multiple inbred lines with different genetic backgrounds are combined through controlled cross-pollination to create hybrid populations that exhibit both uniformity (from homozygous parents) and genetic diversity (from combining different lines).
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then the number of desirable traits is improved, but the complexity of the breeding process deteriorates
Solution Approach 1:
Desirable traits are incorporated into inbred lines through preliminary breeding steps including pedigree selection and recurrent selection before the final crossing stage. This preliminary action simplifies the final hybrid development by starting with pre-selected parental lines.
Solution Approach 2:
The breeding process uses feedback from phenotypic evaluation and performance testing to select and refine inbred lines. This feedback mechanism ensures that only lines with desired traits progress to the next breeding stage, efficiently combining multiple desirable characteristics.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV952947. The invention thus relates to the plants, seeds and tissue cultures of the variety CV952947, and to methods for producing a corn plant produced by crossing a corn plant of variety CV952947 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 CV952947 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 CV952947.