Hybrid Corn Variety Breeding with Cytoplasmic Male Sterility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing corn breeding methods struggle to develop hybrids with uniformity and stability, particularly in combining desirable traits such as yield, disease resistance, and drought tolerance, while maintaining efficient hybrid production processes.
Innovation Solution
The development of the hybrid corn variety CH010569, which includes genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring uniformity and stability, and the use of cytoplasmically inherited traits for male sterility to prevent self-pollination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop corn hybrids, then genetic diversity can be maintained, but uniformity and stability of desirable traits such as yield, disease resistance, and drought tolerance cannot be achieved
Solution Approach 1:
The breeding program is segmented into distinct components: developing homozygous inbred parental lines with specific desirable traits, then crossing these standardized parents to produce uniform F1 hybrid progeny. This segmentation allows each parent line to be optimized independently for traits like disease resistance and drought tolerance, ensuring uniformity and stability in the hybrid while maintaining efficient production through standardized crossing protocols
Solution Approach 2:
The patent utilizes cytoplasmic male sterility (CMS) as a genetic parameter change to prevent self-pollination and ensure cross-pollination. By introducing CMS cytoplasm into the female parent, the system automatically prevents self-fertilization, thereby ensuring 100% cross-pollination efficiency and uniform hybrid progeny without requiring manual intervention, thus resolving the contradiction between trait uniformity and production efficiency
2Manufacturing precision
If self-pollination is allowed in corn plants, then breeding simplicity is maintained, but hybrid uniformity and heterosis cannot be achieved
Solution Approach 1:
The patent employs cytoplasmic male sterility in the female parent to create a self-service system that automatically prevents self-pollination. The CMS cytoplasm inherently causes pollen sterility, so the plant itself serves to prevent self-fertilization without requiring external intervention such as manual emasculation or physical barriers. This self-service mechanism ensures hybrid uniformity while minimizing the complexity of pollination control
Solution Approach 2:
The CMS cytoplasm acts as an intermediary mechanism between the female parent and the pollination process. It mediates the prevention of self-pollination by rendering the plant's own pollen sterile, thereby ensuring that only cross-pollen from the male parent can fertilize the ovules. This intermediary mechanism achieves precise hybrid uniformity without requiring complex external pollination control systems
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010569. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010569, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010569 with itself or with another corn plant, such as a plant of another variety. The disclosure further relates to genetic complements of plants of variety CH010569.