Hybrid Corn Breeding With Male Sterility for Stable Trait Stacking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and stability, incorporating desirable traits such as yield, disease resistance, and drought tolerance, while maintaining genetic diversity and preventing self-pollination.
Innovation Solution
The development of the hybrid corn variety CH010359, which includes cytoplasmic or nuclear factors for male sterility, genetic modifications for traits like herbicide resistance and disease resistance, and a method for controlled cross-pollination using emasculation and bagging techniques to ensure hybrid purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If self-pollination is prevented through male sterility mechanisms, then hybrid purity and genetic diversity are improved, but device complexity and breeding process difficulty increase
Solution Approach 1:
The patent employs cytoplasmic male sterility (CMS) where the female parent plant self-regulates its pollen production by possessing mitochondrial genes that naturally prevent pollen development. This biological self-service mechanism eliminates the need for manual emasculation operations, maintaining hybrid purity while reducing breeding process complexity.
Solution Approach 2:
The invention extracts and utilizes specific cytoplasmic genetic factors (mitochondrial genes) that confer male sterility. By isolating and applying these specific genetic elements from complex breeding populations, the system achieves reliable hybrid purity control without requiring complex multi-step breeding procedures.
2Reliability
If multiple desirable traits are incorporated through extensive breeding, then yield and resistance traits are improved, but breeding time and loss of time increase
Solution Approach 1:
The patent pre-establishes homozygous inbred lines with specific desirable traits (disease resistance, yield characteristics) before the hybridization step. By completing trait selection and stabilization in advance through systematic inbreeding, the subsequent hybrid generation rapidly expresses combined traits without requiring extended breeding cycles for trait stabilization.
Solution Approach 2:
The invention merges multiple desirable traits from different inbred parental lines into a single hybrid offspring. By combining pre-selected inbred lines carrying different beneficial traits (e.g., disease resistance from one parent, yield traits from another), the hybrid simultaneously expresses multiple traits in one generation, significantly reducing the time required compared to sequential trait introduction.
3Manufacturing precision
If inbred lines are developed through repeated selfing, then uniformity and homozygosity are improved, but genetic diversity and adaptability worsen
Solution Approach 1:
The patent segments the breeding process into distinct phases: first developing uniform homozygous inbred lines through selfing for trait consistency, then combining multiple such lines through cross-pollination to restore genetic diversity in the hybrid generation. This segmentation allows simultaneous achievement of uniformity within lines and diversity across the hybrid population.
Solution Approach 2:
The invention inverts the traditional view by using homozygous inbred lines not as final products but as standardized building blocks. By crossing multiple homozygous lines, the system generates heterozygous hybrids with restored genetic diversity and enhanced adaptability, turning the apparent disadvantage of inbreeding into a strategic advantage for controlled diversity management.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010359. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010359, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010359 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 CH010359.