Homozygous Inbred Corn Line CV747050 for Stable Hybrid Production
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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 maintain genetic stability and predictability in hybrid plants due to non-uniformity caused by heterozygous gene loci, leading to unpredictable performance.
Innovation Solution
The development of the corn variety CV747050, which is a homozygous inbred line with a cytoplasmic or nuclear factor for male sterility, allowing controlled pollination and introduction of heritable traits like herbicide tolerance and disease resistance through genetic transformation, ensuring a homogeneous seed population and stable hybrid production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination breeding methods are used to combine desirable traits, then genetic diversity and trait combination are improved, but genetic stability and uniformity deteriorate due to heterozygous gene loci
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic stability, then crossing these stabilized lines to introduce trait diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred lines are developed and stabilized before the crossing operation. This preliminary action of creating genetically uniform parent lines ensures that when crossing occurs, the resulting hybrids have predictable and stable inheritance patterns, resolving the contradiction between stability and adaptability.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred lines, then genetic uniformity and predictability are improved, but genetic diversity and adaptability worsen
Solution Approach 1:
The breeding program segments the population into distinct inbred lines that are homozygous for specific trait combinations. Each line maintains genetic uniformity through self-pollination, while the collection of lines represents diverse genetic adaptations. This segmentation resolves the contradiction by allowing uniformity within lines and diversity across the breeding system.
Solution Approach 2:
The homozygous inbred lines serve multiple functions: they maintain genetic stability for predictable inheritance, provide diverse trait combinations through different line selections, and enable controlled crossing to produce uniform hybrid populations. This multi-functionality resolves the contradiction between uniformity and diversity.
3Reliability
If homozygous inbred lines are crossed to produce uniform hybrid populations, then performance predictability is improved, but genetic variability and adaptability to changing conditions worsen
Solution Approach 1:
The breeding system changes the genetic parameter from heterozygosity to homozygosity in parent lines, which then produces uniform hybrid offspring with predictable performance. The homozygous parent lines serve as stable genetic sources that can be crossed to create hybrids optimized for specific environmental conditions, resolving the contradiction between predictability and adaptability through parameter control.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV747050. The invention thus relates to the plants, seeds and tissue cultures of the variety CV747050, and to methods for producing a corn plant produced by crossing a corn plant of variety CV747050 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 CV747050 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 CV747050.