Maize PH2D58 Breeding via Molecular Marker Selection
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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 from the first cross to delivering finished seed, and existing technologies face challenges in creating stable, high-yielding varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.
Innovation Solution
A novel maize variety, PH2D58, 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 agronomic properties.
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 with desirable traits can be achieved, but the process takes six to twelve years which is time-consuming
Solution Approach 1:
The patent employs preliminary action by using molecular marker technology to pre-identify and select parent lines possessing desirable traits before actual crossing. This allows breeders to predict offspring characteristics in advance, eliminating the need for lengthy field testing of each generation and significantly reducing the breeding cycle while maintaining variety stability
2Adaptability or versatility
If traditional breeding methods are used to develop new maize varieties, then varieties with desirable traits such as disease resistance and drought tolerance can be created, but the process requires extensive time and effort
Solution Approach 1:
The patent implements feedback mechanisms through molecular marker-assisted selection, where DNA markers provide real-time information about the presence of desirable traits (disease resistance, drought tolerance) in breeding populations. This feedback allows for precise selection of individuals carrying target traits, accelerating the incorporation of adaptive traits into new varieties without requiring extensive phenotypic testing across multiple generations
3Productivity
If molecular marker technology is used to accelerate breeding, then the time required can be reduced, but the complexity of the breeding process increases
Solution Approach 1:
The patent uses molecular markers as intermediary tools that bridge the gap between parental genotypes and expected offspring traits. These markers serve as reliable proxies for complex desirable traits, allowing breeders to make informed selection decisions based on simple DNA analysis rather than complex phenotypic evaluation, thus increasing productivity while managing process complexity through standardized molecular assays
Data Source
AI summary
A novel maize variety designated PH2D58 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2D58 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2D58 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 PH2D58 or a locus conversion of PH2D58 with another maize variety.