Hybrid Corn CH613376 Breeding Segmentation for Genetic 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 uniformity, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the hybrid corn variety CH613376, which incorporates cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance, insect resistance, and disease resistance, using genetic loci that can be introduced through backcrossing or genetic transformation, ensuring consistent performance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are 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 program segments the development process into distinct phases: creating homozygous inbred parental lines through repeated selfing, then crossing these standardized lines to produce uniform F1 hybrids. This segmentation ensures genetic consistency while allowing diverse trait combinations in the final hybrid variety CH613376
Solution Approach 2:
The patent applies parameter changes by controlling the homozygosity level of parental lines through generations of selfing, then exploiting heterosis in the F1 generation. This parameter control—maintaining high homozygosity in parents while producing heterozygous hybrids—resolves the contradiction between genetic diversity and uniformity
2Stability of the object's composition
If self-pollination is used to create homozygous lines, then genetic uniformity is improved, but breeding time and generational cycles increase
Solution Approach 1:
The patent employs preliminary action by pre-developing and stabilizing homozygous inbred parental lines before the actual hybrid crossing program. This upfront preparation of standardized parental stock (such as the inbred lines used to create CH613376) eliminates the need for repeated selfing during commercial hybrid production, thereby reducing breeding time while maintaining homozygosity
3Productivity
If cross-pollination is used to produce hybrid vigor, then yield and performance are improved, but genetic consistency among progeny deteriorates
Solution Approach 1:
The patent applies local quality by ensuring that only specific, standardized homozygous parental lines with known and complementary traits are used in cross-pollination. This controlled approach—where each parent contributes fixed, predictable genetic material—maintains progeny uniformity while still achieving hybrid vigor and high yield in the F1 generation
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH613376. The invention thus relates to the plants, seeds and tissue cultures of the variety CH613376, and to methods for producing a corn plant produced by crossing a corn plant of variety CH613376 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 CH613376.