CV761982 Corn Variety Genetic Uniformity and Yield
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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 uniformity, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV761982, which is a stable inbred plant with specific traits like male sterility, herbicide tolerance, and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring uniformity and desirable characteristics in progeny plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional corn breeding techniques are used to develop hybrids, then various desirable traits can be combined in a single variety, but the resulting hybrid plants exhibit genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination and selection, then crossing these standardized inbreds to produce uniform F1 hybrids. This segmentation ensures genetic uniformity within each parental line, which translates to predictable hybrid performance.
Solution Approach 2:
The patent changes the genetic uniformity parameter by enforcing homozygosity in parental inbred lines through multiple generations of self-pollination and selection. This parameter change ensures that all plants within a parental line are genetically identical, leading to uniform and predictable hybrid progeny.
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 stabilizing homozygous inbred parental lines before the actual hybridization event. This preliminary breeding and selection phase ensures that when crossing occurs, the parental lines are already genetically uniform and optimized, reducing the need for subsequent selection and acceleration the overall breeding timeline.
3Productivity
If cross-pollination is used to produce hybrid plants, then genetic diversity and heterosis are achieved, but the resulting population is genetically non-uniform and not uniform in performance
Solution Approach 1:
The patent applies homogeneity by ensuring both parental inbred lines are genetically uniform through homozygosity before crossing. This homogeneity in the parental lines ensures that all F1 hybrid progeny receive identical genetic contributions from each parent, resulting in a uniform hybrid population that consistently expresses heterosis without genetic variation.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV761982. The invention thus relates to the plants, seeds and tissue cultures of the variety CV761982, and to methods for producing a corn plant produced by crossing a corn plant of variety CV761982 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 CV761982 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 CV761982.