Corn Variety CV619952 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 in hybrid populations.
Innovation Solution
The development of the corn variety CV619952, which includes cytoplasmic or nuclear factors for male sterility and additional heritable traits like herbicide tolerance and disease resistance, along with tissue cultures capable of regenerating plants with specific physiological and morphological characteristics, facilitates the production of uniform inbred and hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If corn breeding uses cross-pollination 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 uniform homozygous inbred lines through self-pollination, then crossing these standardized lines to produce hybrids. This segmentation allows genetic uniformity to be maintained within each parental line while achieving trait combination in the hybrid offspring.
Solution Approach 2:
Homozygous inbred parental lines are developed in advance through multiple generations of self-pollination and selection before the crossing step. This preliminary action ensures that each parent contributes a stable, uniform genetic background, making the hybrid performance predictable while still combining desirable traits.
2Stability of the object's composition
If self-pollination is used to develop uniform inbred plants, then genetic uniformity and performance predictability are improved, but genetic diversity and trait combination capability deteriorate
Solution Approach 1:
The method merges the benefits of self-pollination (genetic uniformity) and cross-pollination (trait combination) by using self-pollination to create uniform parental lines and then cross-pollinating these lines to produce hybrids that combine desirable traits from both parents while maintaining predictable performance.
3Adaptability or versatility
If hybrid populations are used to combine genetic backgrounds, then genetic diversity is improved, but uniformity in germination, stand establishment, and growth rate deteriorates
Solution Approach 1:
The patent applies homogeneity by ensuring that each parental inbred line is genetically uniform through extended self-pollination and selection. This uniformity in the parental lines translates to uniformity in the hybrid offspring for traits like germination and growth rate, even though the hybrids combine genetic diversity from both parents.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV619952. The invention thus relates to the plants, seeds and tissue cultures of the variety CV619952, and to methods for producing a corn plant produced by crossing a corn plant of variety CV619952 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 CV619952 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 CV619952.