Hybrid Corn CH384418 Segmentation Breeding Uniformity
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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 and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH384418, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic-male sterility and transgenes integrated at specific chromosomal locations, along with tissue culture methods for regenerating plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to create hybrid corn varieties, then genetic diversity and adaptability are improved, but uniformity and predictability of performance deteriorate
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing uniform inbred lines through self-pollination, then crossing these inbreds to create hybrids. This segmentation allows each phase to optimize for its specific goal - uniformity in inbreds, diversity in hybrids.
Solution Approach 2:
The patent applies preliminary action by first developing and stabilizing inbred lines through multiple generations of self-pollination and selection before creating hybrids. This preliminary uniformity foundation enables the subsequent cross-pollination to produce predictable hybrid results.
2Manufacturing precision
If self-pollination is used to develop inbred plants, then uniformity and stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The breeding program is segmented into two functional parts: inbred line development (using self-pollination for uniformity) and hybrid creation (using cross-pollination for diversity). Each segment serves its specific purpose without compromising the other.
Solution Approach 2:
The patent merges the outputs of self-pollination (uniform inbreds) with cross-pollination (diverse hybrids) in a coordinated breeding program. The inbreds serve as standardized components that can be combined in various ways to create diverse hybrid varieties.
3Reliability
If multiple breeding generations are used to develop stable inbreds, then uniformity and reliability are improved, but time required for development increases
Solution Approach 1:
The patent applies preliminary action by pre-developing and stabilizing inbred lines before creating hybrids. This preliminary work, while time-consuming, establishes a foundation of reliability that accelerates subsequent hybrid development and reduces future breeding cycles.
Solution Approach 2:
The patent discards the time-consuming process of developing new inbreds from scratch by recovering and reusing previously developed stable inbred lines. These pre-tested inbreds can be quickly crossed to create new hybrid varieties without repeating the entire development cycle.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH384418. The invention thus relates to the plants, seeds and tissue cultures of the variety CH384418, and to methods for producing a corn plant produced by crossing a corn plant of variety CH384418 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 CH384418.