Corn Variety CV940888 Breeding for Uniform Hybrids
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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 uniform germination due to the unpredictability of cross-pollination between heterozygous plants, leading to non-uniform performance.
Innovation Solution
The development of the corn variety CV940888, which is an inbred plant with specific genetic traits like male sterility, herbicide tolerance, and disease resistance, along with a process for producing hybrid seeds by crossing CV940888 with other inbred plants to achieve uniform and desirable traits in the offspring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination between heterozygous plants is used in breeding, then genetic diversity is increased, but uniformity of the resulting hybrids deteriorates
Solution Approach 1:
The breeding process is segmented into distinct stages: first developing homozygous inbred lines through self-pollination to ensure uniformity, then crossing these standardized inbreds to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the inbred development phase while ensuring uniformity in the commercial hybrid phase.
Solution Approach 2:
The invention changes the genetic parameter from heterozygous to homozygous state through repeated self-pollination and selection. By transforming the genetic composition parameter of the parental lines, the resulting F1 hybrids achieve both uniformity (from homozygous parents) and genetic diversity (from the specific combination of inbreds).
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniformity of the inbred line is improved, but genetic diversity is reduced
Solution Approach 1:
Self-pollination and selection are performed as preliminary actions to develop standardized homozygous inbred lines before the actual hybridization. This preliminary uniforming of parental lines enables the subsequent cross to produce uniform F1 hybrids with captured genetic diversity from the specific inbred combination.
3Stability of the object's composition
If traditional breeding methods are used, then existing genetic traits are maintained, but development of new uniform hybrids with multiple desirable traits is slow
Solution Approach 1:
The breeding program uses self-service mechanisms where inbred lines are maintained and propagated through their own self-pollinating capability. This self-service approach allows multiple inbred lines with different desirable traits to be independently developed and maintained, then rapidly combined through controlled crossing to create new uniform hybrids with multiple traits.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV940888. The invention thus relates to the plants, seeds and tissue cultures of the variety CV940888, and to methods for producing a corn plant produced by crossing a corn plant of variety CV940888 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 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 CV940888.