Hybrid Corn CH213992 Uniformity via Segmentation
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Solution Overview
Problem
Current corn breeding methods face challenges in developing uniform hybrid plants with desirable traits such as high yield, disease resistance, and uniform germination, 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 CH213992, which includes a cytoplasmic or nuclear factor for male sterility and other desired traits like herbicide resistance and disease resistance, introduced through genetic transformation or backcrossing, ensuring uniformity and stability by controlling pollination and using specific genetic loci.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination methods are used to develop corn hybrids, then genetic diversity is achieved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination, then crossing these standardized parents to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the parental lines while ensuring uniformity in the commercial hybrid generation.
Solution Approach 2:
Homozygous inbred parental lines are created through repeated self-pollination and selection, achieving genetic uniformity within each parent line. When these homogeneous parents are crossed, they produce F1 hybrids that are genetically uniform and predictable, resolving the contradiction between diversity and uniformity.
2Manufacturing precision
If multiple generations of self-pollination are used to create homozygous inbred lines, then uniformity of parental lines is improved, but time to develop commercial hybrids increases
Solution Approach 1:
Homozygous inbred parental lines are developed and standardized in advance before the commercial hybrid breeding program begins. This preliminary action of creating uniform parents allows the subsequent hybrid production to proceed efficiently without time loss, as the parental uniformity is already established.
3Adaptability or versatility
If cross-pollination is allowed without controlled pollination, then natural genetic variation is maintained, but performance predictability of hybrids deteriorates
Solution Approach 1:
The breeding program extracts and isolates specific desirable traits from diverse genetic sources into standardized inbred parental lines. By taking out and fixing these traits in the parents through self-pollination, the resulting F1 hybrids show predictable performance for these traits while maintaining overall genetic uniformity.
Solution Approach 2:
Homozygous inbred lines serve as intermediary carriers that capture genetic diversity from various sources while providing a standardized, uniform platform for producing predictable F1 hybrids. These inbred intermediaries mediate between natural variation and the need for uniform commercial performance.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH213992. The invention thus relates to the plants, seeds and tissue cultures of the variety CH213992, and to methods for producing a corn plant produced by crossing a corn plant of variety CH213992 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 CH213992.