CH010504 Hybrid Corn Variety Using Cytoplasmic Male Sterility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and desirable traits such as increased yield, disease resistance, and improved agronomic qualities, often requiring extensive selection and cross-pollination processes that are inefficient and unpredictable.
Innovation Solution
The development of the hybrid corn variety CH010504, which incorporates genetic modifications and cytoplasmic traits like male sterility, along with specific breeding methods and tissue culture techniques to ensure uniformity and desired characteristics, including resistance to pests, diseases, and improved growth traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional breeding techniques are used to develop corn hybrids, then genetic diversity is maintained through natural pollination, but uniformity and predictability of desirable traits are reduced
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through repeated self-pollination, then crossing these standardized lines to produce uniform F1 hybrids. This segmentation allows each phase to be optimized independently, ensuring trait uniformity while managing process complexity.
Solution Approach 2:
The patent employs cytoplasmic male sterility (CMS) as a genetic parameter change to prevent self-pollination in hybrid seed production. By introducing CMS cytoplasm in the female parent, the system ensures cross-pollination occurs, guaranteeing hybrid uniformity and eliminating the need for manual emasculation, thus improving reliability while managing complexity.
2Reliability
If extensive selection and cross-pollination processes are used to develop hybrids, then desirable traits such as yield and disease resistance can be combined, but the process becomes inefficient and unpredictable
Solution Approach 1:
Homozygous inbred parental lines are developed in advance through repeated self-pollination and selection before the hybrid crossing stage. This preliminary action ensures that both parents have stable, predictable genotypes, making the F1 hybrid performance highly predictable and reducing the time needed for subsequent selection.
Solution Approach 2:
The patent employs recurrent selection methods where hybrid performance is evaluated and fed back into the breeding program to select superior parental lines. This feedback loop continuously improves predictability of hybrid performance while optimizing breeding cycle efficiency through data-driven selection decisions.
3Manufacturing precision
If self-pollination is allowed in hybrid production, then breeding simplicity is maintained, but uniformity of hybrid traits is compromised
Solution Approach 1:
Different quality requirements are applied to different parental lines: the female parent is made cytoplasmically male sterile (CMS) to prevent self-pollination and ensure hybrid uniformity, while the male parent is maintained as a fertile heterozygote to provide genetic diversity. This local differentiation of quality ensures hybrid seed uniformity without excessive complexity.
Solution Approach 2:
A CMS maintainer line serves as an intermediary in the breeding system. This maintainer line has normal cytoplasm but carries the sterile male parent's nuclear genes, allowing it to produce pollen that maintains the CMS trait in the female parent without introducing unwanted genetic variation, thus preserving hybrid uniformity while simplifying production.
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010504. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010504, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010504 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 CH010504.