Maize Inbred PH2S9S Accelerates Hybrid Breeding
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, typically taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
The introduction of the novel maize variety PH2S9S, which can be crossed with other maize plants to introduce desirable traits through backcross conversion, genetic manipulation, and transformation, incorporating cytoplasmic or nuclear factors for male sterility and other beneficial characteristics, and the use of tissue culture to regenerate plants with specific physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional maize breeding methods are used to combine desirable traits, then genetic diversity and trait combination are improved, but the breeding time and process duration increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-establishing an inbred line (PH2S9S) with optimized genetic characteristics before combining it with other varieties. This pre-prepared genetic foundation allows for faster hybrid development compared to starting from scratch each time, reducing the overall breeding timeline while maintaining trait combination capabilities.
2Stability of the object's composition
If multiple breeding steps are performed to ensure variety stability, then genetic stability and agronomic soundness are improved, but the development process becomes more complex and time-consuming
Solution Approach 1:
The patent utilizes parameter changes by modifying specific genetic parameters through inbreeding to create PH2S9S with desired characteristics. This focused parameter optimization approach allows for achieving variety stability without requiring excessively complex multi-generational breeding programs, as the inbred line serves as a stable foundation for subsequent hybrid development.
3Productivity
If conventional breeding methods are used to achieve high yield, then yield potential is improved, but the time required to reach maturity and deliver seed increases
Solution Approach 1:
The patent applies preliminary action by pre-developing the PH2S9S inbred line with yield-optimizing genetic characteristics before hybrid creation. This advance preparation of genetic material with proven yield potential allows for accelerated hybrid development and faster time to market, avoiding the need to perform lengthy breeding programs for each new hybrid variety.
Data Source
AI summary
A novel maize variety designated PH2S9S and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2S9S with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2S9S 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 PH2S9S or a locus conversion of PH2S9S with another maize variety.