Corn Variety CV912719 Breeding for Uniform Inbred Lines
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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 non-uniformity in hybrid populations resulting from cross-pollination between heterozygous plants.
Innovation Solution
The development of the corn variety CV912719, which includes a cytoplasmic or nuclear factor for male sterility to prevent self-pollination, along with specific genetic loci for traits like herbicide tolerance and disease resistance, allowing for the production of homogeneous inbred seeds and plants with controlled cross-pollination processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop hybrid corn plants, then genetic diversity and trait combination are improved, but uniformity and predictability of the hybrid population deteriorate
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 lines to create hybrids. This segmentation allows each stage to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred plants are developed in advance through multiple generations of self-pollination and selection before the hybrid crossing stage. This preliminary action ensures that the parental lines are genetically uniform and stable, which then enables predictable hybrid performance.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniformity and stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The invention merges the benefits of self-pollination (uniformity) and cross-pollination (genetic diversity) by first creating homozygous inbred lines through selfing, then crossing these standardized lines to produce genetically diverse yet uniform hybrid populations.
3Stability of the object's composition
If multiple breeding generations are used to develop superior inbred plants, then trait stability and uniformity are improved, but breeding time and productivity deteriorate
Solution Approach 1:
Molecular marker technology replaces traditional phenotypic selection methods, allowing breeders to identify desired traits at the DNA level rather than waiting for phenotypic expression. This substitution dramatically accelerates the breeding process while maintaining trait stability.
Solution Approach 2:
Once superior inbred lines are developed, their genetic characteristics are copied and propagated through controlled crossing programs. Molecular markers enable verification that the desired genetic copy is present, ensuring trait stability without requiring extensive multi-generational testing.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV912719. The invention thus relates to the plants, seeds and tissue cultures of the variety CV912719, and to methods for producing a corn plant produced by crossing a corn plant of variety CV912719 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 CV912719 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 CV912719.