Corn Variety CV869270 Breeding for Genetic Uniformity
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Solution Overview
Problem
The challenge in corn breeding is to develop uniform corn hybrids with desirable traits such as high yield, disease resistance, and drought tolerance, while maintaining genetic stability and avoiding unpredictable performance due to genetic non-uniformity.
Innovation Solution
The development of the corn variety CV869270, which is a homozygous inbred line with specific morphological and physiological characteristics, including traits that can be enhanced through genetic modifications such as male sterility, herbicide tolerance, and insect resistance. This variety can be used to produce uniform seeds and plants, and further modified through backcrossing or genetic transformation to introduce desired traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait combination are improved, but genetic uniformity and performance predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these stabilized lines to combine desirable traits. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred plants are developed through preliminary self-pollination and selection before the cross-breeding step. This preliminary action ensures that parental lines are genetically stable and uniform, which then enables predictable and uniform hybrid performance when crossed.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity and stability are improved, but genetic diversity and trait combination are limited
Solution Approach 1:
Multiple homozygous inbred lines, each developed through self-pollination and possessing different desirable traits, are merged through cross-pollination to create hybrid plants that combine all these traits. This merging allows the hybrid to inherit the genetic stability of inbred lines while achieving the trait diversity of cross-breeding.
Solution Approach 2:
Homozygous inbred lines serve as intermediary materials in the breeding process. They are first created through self-pollination to ensure genetic stability, then used as parental sources in cross-breeding to combine traits, and finally produce the uniform hybrid progeny. This intermediary role resolves the contradiction between uniformity and diversity.
3Adaptability or versatility
If non-uniform hybrid plants are produced from heterozygous parents, then genetic diversity is improved, but performance uniformity and predictability deteriorate
Solution Approach 1:
The patent applies homogeneity by ensuring that parental inbred lines are genetically uniform through self-pollination and selection. When these uniform parents are crossed, they produce hybrid progeny that are also uniform in their genetic composition and performance characteristics, eliminating the non-uniformity that would result from crossing heterozygous plants.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV869270. The invention thus relates to the plants, seeds and tissue cultures of the variety CV869270, and to methods for producing a corn plant produced by crossing a corn plant of variety CV869270 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 CV869270 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 CV869270.