Hybrid Corn CH771816 Breeding Segmentation
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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, which affects performance predictability.
Innovation Solution
The development of the hybrid corn variety CH771816, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using 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 develop hybrid corn varieties, then genetic diversity and trait combination are improved, but genetic uniformity and performance predictability 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 controlled genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred parent lines are developed and standardized before the hybrid crossing step. This preliminary action ensures that both parents have uniform, predictable genetic compositions, which then enables the F1 hybrid to exhibit consistent performance across different environments.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but genetic diversity and adaptability worsen
Solution Approach 1:
Self-pollination and selection are performed as a preliminary step to create homozygous inbred lines with uniform genetics. This standardized uniform then serves as the foundation for subsequent crossing, where diversity is intentionally introduced in a controlled manner to achieve predictable hybrid performance.
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then trait diversity is improved, but breeding complexity and time worsen
Solution Approach 1:
The breeding program is divided into separate, standardized modules: inbred line development through selfing, hybrid crossing, and performance evaluation. Each module focuses on specific traits and can be independently optimized and replicated, reducing overall program complexity despite the diversity of traits being pursued.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH771816. The invention thus relates to the plants, seeds and tissue cultures of the variety CH771816, and to methods for producing a corn plant produced by crossing a corn plant of variety CH771816 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 CH771816.