Hybrid Corn CH146292 Breeding Segmentation
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity in cross-pollinated plants, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH146292, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmically-inherited traits and genetic transformation techniques to introduce desired characteristics, and a method for producing hybrid seeds by crossing specific parent plants to prevent self-pollination and ensure cross-pollination.
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: developing homozygous inbred lines through repeated self-pollination, then crossing these inbreds to produce uniform F1 hybrids. This segmentation ensures that each phase achieves its specific goal of either maximizing diversity (inbreds) or maximizing uniformity (F1 hybrids).
Solution Approach 2:
Homozygous inbred plants are developed through preliminary self-pollination and selection before the actual hybrid crossing. This preliminary action creates stable genetic backgrounds that ensure uniform F1 progeny when crossed, preventing genetic non-uniformity in the final hybrid population.
2Manufacturing precision
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but loss of genetic diversity occurs
Solution Approach 1:
Homozygous inbred lines are developed through preliminary self-pollination and selection to achieve genetic uniformity. These inbreds serve as the building blocks for subsequent crosses, ensuring that the F1 hybrids produced from crossing different inbreds will be uniform and genetically stable.
Solution Approach 2:
Multiple homozygous inbred lines with different genetic backgrounds are crossed to produce F1 hybrids. This merging of different inbred lines combines their desirable traits while maintaining uniformity within the F1 population, achieving both diversity (through different inbred parents) and uniformity (through controlled crossing).
3Adaptability or versatility
If traditional breeding methods are used to develop new varieties, then genetic traits can be combined, but the process is time-consuming and lacks efficiency
Solution Approach 1:
Homozygous inbred lines are developed in advance through self-pollination and selection before the hybrid crossing phase. This preliminary development of stable inbred lines enables rapid production of uniform F1 hybrids, significantly reducing the overall breeding cycle time compared to developing everything from scratch.
Solution Approach 2:
The breeding program maintains continuous cycles of self-pollination, selection, and crossing to produce uniform F1 hybrids. This continuous operation ensures that desirable traits are consistently combined and stabilized across multiple generations, improving breeding efficiency while maintaining genetic quality.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH146292. The invention thus relates to the plants, seeds and tissue cultures of the variety CH146292, and to methods for producing a corn plant produced by crossing a corn plant of variety CH146292 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 CH146292.