Maize Inbred PH2SRT Breeding Acceleration
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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
A novel maize variety, PH2SRT, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of hybrid seeds with enhanced physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then stable and high-yielding varieties can be obtained, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by using doubled haploid technology to create inbred lines in a single generation rather than requiring multiple generations of selfing. This preliminary creation of homozygous lines accelerates the breeding process while maintaining the stability and reliability of the resulting varieties, reducing the overall breeding cycle from six to twelve years to a much shorter duration.
Solution Approach 2:
The patent changes the temporal parameter of the breeding process by utilizing molecular markers and genomic selection to evaluate and select lines at earlier stages. This parameter change allows for accelerated selection and reduces the time required to develop stable, high-yielding varieties while maintaining breeding reliability.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance improves, but the breeding complexity increases
Solution Approach 1:
The patent applies segmentation by developing distinct inbred lines, each carrying specific desirable traits (such as disease resistance, drought tolerance, or yield components), and then combining these segmented lines through controlled crosses. This segmentation allows for manageable trait accumulation and reduces the overall complexity of combining multiple desirable traits in a single variety.
Solution Approach 2:
The patent uses molecular markers and genomic selection indices as intermediaries to track and evaluate multiple traits simultaneously. These intermediaries simplify the breeding process by providing objective criteria for selecting lines with combined desirable traits, reducing the complexity of managing multiple trait combinations.
3Stability of the object's composition
If inbred lines are developed through traditional selfing, then homozygosity is achieved, but the process requires multiple generations and time
Solution Approach 1:
The patent replaces the mechanical biological process of repeated selfing (which requires multiple generations) with a technological system involving doubled haploid technology and molecular markers. This substitution achieves homozygosity in a single generation, maintaining the stability of inbred line composition while dramatically reducing the time and number of generations required.
Data Source
AI summary
A novel maize variety designated PH2SRT and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2SRT with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2SRT 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 PH2SRT or a locus conversion of PH2SRT with another maize variety.