Hybrid Corn CH163712 Segmented Breeding for Genetic Uniformity
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Solution Overview
Problem
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 like pedigree breeding and recurrent selection.
Innovation Solution
The development of the hybrid corn variety CH163712, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and genetic transformation techniques to introduce desired traits, and 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 develop corn hybrids, then genetic diversity and trait combination are improved, but genetic uniformity and predictability of performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to introduce diversity. This segmentation allows control over when genetic mixing occurs, resolving the contradiction between diversity and uniformity.
Solution Approach 2:
Inbred parental lines are developed and standardized through preliminary self-pollination and selection before the actual hybrid cross. This preliminary action ensures that the genetic composition of parents is fixed and uniform, which then enables predictable hybrid performance when crossed.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity and stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
Self-pollination is used as a preliminary action to fix genetic composition and create uniform inbred lines. This uniformity is then utilized as a foundation for subsequent cross-pollination, which introduces the necessary genetic diversity for hybrid vigor and adaptability.
Solution Approach 2:
Inbred lines serve as intermediaries that carry fixed, uniform genetic compositions. These intermediaries are then crossed to combine different uniform genetic backgrounds, achieving both stability within each line and diversity through their combination in hybrids.
3Adaptability or versatility
If traditional breeding methods are used, then trait combination flexibility is improved, but breeding time and complexity increase
Solution Approach 1:
The breeding program is segmented into independent inbred line development modules that can be paralleled. Multiple inbred lines are developed simultaneously through self-pollination, and their crosses are evaluated in systematic combinations, reducing overall breeding time while maintaining flexibility.
Solution Approach 2:
The breeding approach changes from evaluating individual complex crosses to evaluating standardized F1 hybrids from predetermined inbred combinations. This parameter change in the breeding system allows more trait combinations to be assessed in less time through systematic crossing designs.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH163712. The invention thus relates to the plants, seeds and tissue cultures of the variety CH163712, and to methods for producing a corn plant produced by crossing a corn plant of variety CH163712 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 CH163712.