Hybrid Corn CH162191 Breeding for Uniform Performance
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform hybrid plants with desirable traits such as high yield, disease resistance, and uniformity, as they often result in non-uniform and unpredictable performance due to genetic differences between cross-pollinated plants.
Innovation Solution
The development of the hybrid corn variety CH162191, which incorporates cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance, insect resistance, and disease resistance, using genetic loci introduced through backcrossing or genetic transformation, and tissue culture methods to ensure consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination breeding methods are used, then genetic diversity is achieved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct stages: developing homozygous inbred lines through self-pollination, maintaining these lines separately, and then crossing them in controlled conditions. This segmentation ensures genetic diversity is captured in the inbred lines while the crossing stage ensures uniform hybrid production
Solution Approach 2:
Homozygous inbred parent lines are developed and stabilized before the hybrid crossing stage. This preliminary action of creating genetically uniform parents through repeated self-pollination ensures that when crossing occurs, the resulting hybrids are uniform and predictable
2Adaptability or versatility
If multiple desirable traits are combined in breeding, then trait diversity increases, but breeding complexity and time required increase
Solution Approach 1:
Multiple desirable traits from different inbred lines are merged into a single hybrid combination. The patent combines traits such as disease resistance, yield characteristics, and stress tolerance from separately developed inbred parents into one unified hybrid variety
Solution Approach 2:
Once a successful hybrid combination with multiple desirable traits is developed, it is replicated and propagated through controlled crossing of the established inbred parents, ensuring consistent reproduction of the multi-trait hybrid without redeveloping it each time
3Manufacturing precision
If self-pollination is used to create uniform lines, then uniformity improves, but genetic diversity and adaptability decrease
Solution Approach 1:
The breeding system segments the population into separate inbred lines through self-pollination, each line achieving high uniformity. However, genetic diversity is preserved across the collection of different inbred lines, which are then combined through crossing to produce uniform yet genetically diverse hybrids
Solution Approach 2:
Different inbred lines are developed with specific local qualities or specialized traits (e.g., one line for disease resistance, another for yield). Each line is uniformly bred for its specific quality through self-pollination, then combined in hybrids to achieve both uniformity and diverse trait expression
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH162191. The invention thus relates to the plants, seeds and tissue cultures of the variety CH162191, and to methods for producing a corn plant produced by crossing a corn plant of variety CH162191 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH162191.