Hybrid Corn CH147656 Breeding Segmentation for Genetic Uniformity
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform hybrid plants 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 CH147656, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and transgenes integrated at a single chromosomal location, along with tissue cultures capable of regenerating plants with specific 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 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 inbreds to produce uniform hybrid progeny. This segmentation allows genetic diversity to be introduced only at the crossing stage while maintaining uniformity within each phase.
Solution Approach 2:
The patent changes the genetic composition parameter by crossing two homozygous inbred lines with different genetic makeups. This parameter change introduces genetic diversity and hybrid vigor while maintaining uniformity because both parents are genetically standardized, ensuring all progeny receive the same combination of genes.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but time to achieve stability and productivity deteriorates
Solution Approach 1:
Inbred lines are developed in advance through multiple generations of self-pollination and selection before being used in hybrid crosses. This preliminary action ensures genetic uniformity is established beforehand, allowing the hybrid production phase to proceed efficiently without time loss during the actual crossing operation.
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then trait diversity is improved, but breeding complexity and difficulty of detection worsen
Solution Approach 1:
The breeding program is divided into separate inbred line development phases and hybrid crossing phases. Each phase focuses on specific traits, allowing for systematic selection and combination of desirable characteristics without overwhelming complexity. Traits are incorporated into specific inbred lines separately, then combined through controlled crosses.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH147656. The invention thus relates to the plants, seeds and tissue cultures of the variety CH147656, and to methods for producing a corn plant produced by crossing a corn plant of variety CH147656 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 CH147656.