Hybrid Corn CH817343 Breeding via Cytoplasmic Male Sterility
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the efficiency of trait introduction and hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH817343, which incorporates genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic-male sterility and genetic transformation techniques to prevent self-pollination and enhance hybrid seed production, along with tissue culture methods for regenerating plants with specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional self-pollination breeding methods are used, then genetic stability is maintained, but hybrid seed production efficiency is limited due to inability to prevent self-pollination
Solution Approach 1:
The patent extracts and removes the self-pollination capability from the corn plant by introducing cytoplasmic male sterility genes that prevent pollen formation, thereby eliminating the harmful self-pollination function while maintaining hybrid seed production efficiency
Solution Approach 2:
The patent uses cytoplasmic male sterility genes as an intermediary mechanism to control pollination, where the sterile cytoplasm acts as a mediator that prevents self-pollination but allows controlled cross-pollination for hybrid seed production
2Reliability
If multiple desirable traits are combined in hybrid varieties, then yield and resistance improve, but breeding complexity and time increase
Solution Approach 1:
The patent merges multiple desirable traits including cytoplasmic male sterility, herbicide resistance, and disease resistance into a single hybrid corn variety through coordinated breeding of parental lines, achieving combined benefits while streamlining the breeding process
Solution Approach 2:
The patent performs preliminary breeding actions by developing and stabilizing parental inbred lines with specific traits before hybridization, including pre-establishing cytoplasmic male sterility in one parent and complementary traits in the other, thereby simplifying the overall breeding complexity
3Ease of operation
If uniformity in germination and growth is achieved, then crop management efficiency improves, but genetic diversity decreases
Solution Approach 1:
The patent applies local quality by maintaining uniformity in specific agronomic traits (germination, growth, maturity) through hybrid heterosis while preserving genetic diversity in other regions of the genome through the combination of diverse parental inbred lines
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH817343. The invention thus relates to the plants, seeds and tissue cultures of the variety CH817343, and to methods for producing a corn plant produced by crossing a corn plant of variety CH817343 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 CH817343.