Corn Variety CV505385 Homogeneous Inbred Lines
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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 herbicide tolerance, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV505385, which includes a cytoplasmic or nuclear factor for male sterility and specific genetic loci conferring traits like herbicide resistance, insect resistance, and modified metabolic pathways, ensuring uniformity and desirable agronomic characteristics through controlled pollination and genetic modification techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but the resulting hybrid plants show genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The patent applies homogeneity by developing highly inbred parental lines (at least 95% homozygous) to ensure uniform genetic composition. This creates homogeneous hybrid populations where all plants inherit identical heterozygous loci from their inbred parents, eliminating the genetic variability that causes unpredictable performance in traditional breeding methods.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform true-breeding progeny are produced, but the breeding process requires multiple generations and extensive selection time
Solution Approach 1:
The patent applies preliminary action by pre-developing and maintaining extensive collections of homozygous inbred lines through multiple generations of self-pollination and selection before hybridization. This preliminary preparation of uniform parental stock enables rapid hybrid development without requiring lengthy breeding cycles for each new variety, as the parental inbreds are already genetically stabilized.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity is introduced, but the resulting population lacks uniformity and shows unpredictable performance
Solution Approach 1:
The patent resolves this contradiction by using highly homozygous inbred parents (≥95% homozygosity) in cross-pollination. This ensures that all hybrid offspring receive identical alleles at each heterozygous locus, creating uniform F1 populations. The genetic diversity is maintained at the heterozygous locus level while population homogeneity is preserved through controlled crossing of genetically identical parental lines.
Solution Approach 2:
The uniform performance in hybrids is achieved through preliminary development of standardized inbred parental lines with known genetic compositions. This pre-characterization of parental genetics allows predictable hybrid performance, as the heterozygous loci in the F1 generation are precisely determined by the parental contributions, eliminating the randomness of traditional cross-pollination.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV505385. The invention thus relates to the plants, seeds and tissue cultures of the variety CV505385, and to methods for producing a corn plant produced by crossing a corn plant of variety CV505385 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 CV505385 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 CV505385.