Corn Variety CV969360 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 CV969360, 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, and the use of tissue cultures to regenerate 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 non-uniformity and unpredictable performance occur
Solution Approach 1:
The breeding process is segmented into distinct phases: creating diverse F1 hybrids through cross-pollination, then self-pollinating to create uniform F2 inbred lines. This segmentation allows the system to first achieve genetic diversity for trait combination, then achieve uniformity for predictable performance in subsequent generations.
Solution Approach 2:
The patent performs preliminary cross-pollination to create F1 hybrids with desired trait combinations before self-pollinating to generate uniform F2 inbred lines. This preliminary action establishes the genetic diversity needed for trait combination while setting up the foundation for subsequent uniformity through selfing.
2Reliability
If self-pollination is used to create uniform inbred plants, then genetic uniformity and breeding stability are improved, but loss of genetic diversity occurs
Solution Approach 1:
The patent performs preliminary cross-pollination between different inbred lines to create F1 hybrids with desired trait combinations before self-pollinating to generate uniform F2 inbred lines. This preliminary cross-pollination step introduces and combines genetic diversity while the subsequent self-pollination establishes breeding stability.
Solution Approach 2:
The breeding process is segmented into distinct phases: creating diverse F1 hybrids through cross-pollination, then self-pollinating to create uniform F2 inbred lines. This segmentation allows the system to first achieve genetic diversity for trait combination, then achieve uniformity for predictable performance in subsequent generations.
3Reliability
If multiple breeding generations are performed to achieve uniformity, then inbred plant stability is improved, but breeding time and complexity increase
Solution Approach 1:
The patent performs preliminary cross-pollination to create F1 hybrids with desired trait combinations before self-pollinating to generate uniform F2 inbred lines. By establishing the desired trait combinations in the F1 generation through strategic cross-pollination, the patent reduces the number of additional selfing generations needed to achieve uniformity, thereby shortening the overall breeding cycle.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV969360. The invention thus relates to the plants, seeds and tissue cultures of the variety CV969360, and to methods for producing a corn plant produced by crossing a corn plant of variety CV969360 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 CV969360 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 CV969360.