Hybrid Corn CH389253 Breeding via CMS and Segmentation
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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 CH389253, 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 combine desirable traits from different plants, then genetic diversity and trait combination are improved, but genetic non-uniformity and performance unpredictability worsen
Solution Approach 1:
The patent applies preliminary action by developing and selecting homozygous inbred plants before creating the hybrid population. The inbred line P1 was developed through multiple generations of self-pollination and selection to achieve uniformity and stability, which then serves as a reliable foundation for creating the hybrid population with desired traits.
Solution Approach 2:
The patent applies local quality by introducing specific desirable traits at particular genetic loci within the inbred line. The inbred line P1 carries specific alleles at loci related to yield, disease resistance, and other traits, creating localized genetic improvements that are then propagated through the hybrid population.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but the time required for breeding and trait development increases
Solution Approach 1:
The patent applies preliminary action by pre-developing the inbred line P1 through multiple generations of self-pollination and selection before creating the hybrid population. This preliminary development of uniform inbred material establishes a stable genetic foundation that reduces the time needed for subsequent hybrid population development and trait expression.
3Adaptability or versatility
If traditional breeding methods are used to develop hybrid varieties, then trait combination is achieved, but manufacturing complexity and process difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct phases: (1) development of homozygous inbred line P1 through self-pollination and selection, (2) creation of hybrid population by crossing inbred P1 with other inbreds, and (3) evaluation and selection of hybrids with desired traits. This segmentation simplifies the overall process by making each phase more manageable and less complex.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH389253. The invention thus relates to the plants, seeds and tissue cultures of the variety CH389253, and to methods for producing a corn plant produced by crossing a corn plant of variety CH389253 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 CH389253.