Maize Inbred PH2STR Breeding Acceleration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in creating stable, high-yielding maize varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.
Innovation Solution
The introduction of the novel maize variety PH2STR, which involves crossing and genetic manipulation to incorporate traits like male sterility, disease resistance, and improved agronomic characteristics, using backcross conversion and transformation techniques, along with specific breeding methods to produce inbred and hybrid maize plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to develop new varieties with desirable traits, then the varieties achieve stability and high yield, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred line PH2STR with specific desirable traits (disease resistance, stress tolerance, yield potential) before hybrid development. This advance preparation of parental material with known characteristics accelerates the breeding process while ensuring variety stability, as the inbred line's proven performance reduces the need for extended field testing in later development stages
2Productivity
If conventional breeding processes are followed to combine desirable traits, then stable high-yielding varieties are produced, but the process requires extensive time for multiple crossing and selection generations
Solution Approach 1:
The patent employs copying by utilizing PH2STR as a standardized inbred parent line that can be replicated and used across multiple hybrid combinations. This inbred line serves as a proven genetic template that consistently contributes desirable traits (yield, stress tolerance) to various hybrid progeny, eliminating the need to re-develop these traits in each new variety and significantly reducing breeding cycle time while maintaining high productivity
3Stability of the object's composition
If traditional crossing methods are used to introduce new traits, then the traits are stably inherited, but the process requires multiple generations of backcrossing and selection
Solution Approach 1:
The patent applies self-service through the use of cytoplasmic male sterility (CMS) in the PH2STR inbred line. The CMS trait enables automatic prevention of self-pollination and ensures cross-pollination occurs, allowing hybrid seed production without manual emasculation or complex breeding procedures. This self-managing sterility mechanism maintains stable trait inheritance while dramatically improving breeding efficiency by eliminating labor-intensive steps
Data Source
AI summary
A novel maize variety designated PH2STR and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2STR with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2STR 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 PH2STR or a locus conversion of PH2STR with another maize variety.