Corn Variety CV022631 Breeding for Genetic Uniformity
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods struggle to develop stable inbred plants with predictable performance due to genetic non-uniformity from cross-pollination, leading to unpredictable hybrid traits.
Innovation Solution
The development of the corn variety CV022631, which includes a cytoplasmic or nuclear factor for male sterility and specific genetic loci conferring traits like herbicide tolerance, disease resistance, and modified metabolism, along with tissue cultures capable of regenerating plants with consistent physiological and morphological characteristics.
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 predictability of hybrid traits 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 standardized lines to combine desirable traits. This segmentation allows each phase to optimize for its specific goal without compromise.
Solution Approach 2:
Homozygous inbred plants are developed in advance through multiple generations of self-pollination and selection before the crossing step. This preliminary action ensures that the parental lines have stable, predictable genetics, which then enables reliable trait combination in the hybrid generation.
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 capability deteriorate
Solution Approach 1:
The breeding program is divided into separate stages: self-pollination stage for developing uniform inbred lines, followed by a crossing stage for combining traits. This segmentation allows self-pollination to achieve its goal of genetic stability without being constrained by the need for trait combination, which is addressed in the subsequent crossing stage.
Solution Approach 2:
Homozygous inbred lines serve as intermediaries that bridge genetic diversity and stability. These inbreds are first created through self-pollination to achieve uniformity, then used as standardized parental materials for crossing to combine desirable traits from different sources.
3Stability of the object's composition
If multiple breeding generations are advanced to develop stable inbreds, then genetic stability and uniformity are improved, but breeding time and development duration increase
Solution Approach 1:
Plants are self-pollinated to produce progeny that inherit and reinforce the parental genotype. This self-service mechanism naturally accelerates homozygosity without requiring external intervention for each generation, efficiently achieving genetic stability through the plant's own reproductive process.
Solution Approach 2:
The breeding program employs periodic cycles of self-pollination followed by selection and advancement to the next generation. This rhythmic pattern of reproduction and selection systematically reduces heterozygosity over time, achieving genetic stability through repeated periodic application rather than continuous intervention.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV022631. The invention thus relates to the plants, seeds and tissue cultures of the variety CV022631, and to methods for producing a corn plant produced by crossing a corn plant of variety CV022631 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 CV022631 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 CV022631.