Maize Inbred 1PECJ78 for Backcross Trait Introgression
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.
Innovation Solution
The introduction of the novel maize variety 1PECJ78, which can be bred through backcross conversion, genetic manipulation, or transformation, incorporating traits like male sterility, herbicide tolerance, and disease resistance, and can be propagated through controlled pollination techniques to ensure genetic purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then the resulting varieties have improved disease resistance, drought tolerance, and yield, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by using male sterility systems to pre-establish controlled pollination mechanisms before the actual breeding process. This allows breeders to pre-prepare sterile female parent lines that cannot self-pollinate, ensuring that all pollination events are controlled crosses. This preliminary setup eliminates the need for time-consuming manual emasculation and enables systematic trait combination across multiple generations, thereby reducing the overall breeding development time while maintaining reliable disease resistance and yield improvements
2Productivity
If traditional maize breeding methods are used to combine desirable traits, then the resulting varieties have improved drought tolerance and yield, but the process requires extensive manual intervention and is time-consuming
Solution Approach 1:
The patent applies self-service by utilizing cytoplasmic male sterility (CMS) systems where the female parent plants automatically prevent self-pollination through their sterile cytoplasm. This self-service mechanism eliminates the need for manual emasculation operations by breeders. The sterile plants inherently perform the function of preventing unwanted self-fertilization, allowing the breeding process to proceed with simpler operations and reduced labor requirements while maintaining high yield potential through controlled cross-pollination
3Stability of the object's composition
If manual emasculation is used to prevent self-pollination, then genetic purity is maintained, but labor requirements and time consumption increase significantly
Solution Approach 1:
The patent applies mechanics substitution by replacing the mechanical process of manual emasculation with a biological mechanism - cytoplasmic male sterility. Instead of physically removing or inactivating anthers through manual intervention, the system uses genetically determined sterile cytoplasm to naturally prevent pollen formation. This substitution maintains genetic purity through the biological inability of sterile plants to produce viable pollen, thereby eliminating the time-consuming manual emasculation process while ensuring complete genetic purity control
Data Source
AI summary
A novel maize variety designated 1PECJ78 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PECJ78 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PECJ78 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety 1PECJ78 or a locus conversion of 1PECJ78 with another maize variety.