Soybean Variety 97R71 Marker-Assisted Breeding
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Solution Overview
Problem
Current soybean breeding processes are time-consuming and resource-intensive, aiming to develop stable, high-yielding varieties with desirable traits like disease resistance, drought tolerance, and improved fatty acid profiles, but face challenges in efficiently combining these traits in a single variety.
Innovation Solution
Development of the soybean variety 97R71, which is the result of careful breeding and selection, combining traits such as resistance to aerial web blight, aphid antibiosis, and improved fatty acid profiles, through a comprehensive breeding program that includes backcrossing and genetic marker-assisted breeding to ensure stability and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional soybean breeding methods are used to combine multiple desirable traits, then the variety achieves stability and uniformity in traits like disease resistance and yield, but the breeding process becomes extremely time-consuming and resource-intensive
Solution Approach 1:
The patent replaces traditional mechanical breeding methods (manual crossing, selection, and evaluation) with molecular marker-based genetic analysis. By using DNA markers to track inheritance of desirable traits, the breeding process achieves the same reliability in trait stability but in a fraction of the time, as molecular markers provide direct genetic information without requiring multi-generation field testing.
Solution Approach 2:
The patent introduces molecular markers as an intermediary between parental genotypes and phenotypic expression. These markers serve as genetic signposts that allow breeders to predict and select for desirable traits (disease resistance, yield, fatty acid profile) before phenotypic expression occurs, thereby accelerating the breeding process while maintaining trait reliability.
2Adaptability or versatility
If multiple desirable traits are combined in a single soybean variety through extensive breeding, then the variety achieves superior agronomic characteristics, but the complexity of the breeding program increases significantly
Solution Approach 1:
The patent segments the complex breeding program into distinct molecular marker-based modules, each tracking specific desirable traits (disease resistance, yield components, fatty acid profiles). By dividing the overall breeding objective into separable genetic components that can be independently monitored and selected, the program manages complexity while achieving comprehensive trait combination.
Solution Approach 2:
The patent develops a universal molecular marker system that can simultaneously track multiple different desirable traits across various soybean breeding programs. This multi-functional marker system serves as a general tool for combining diverse traits (disease resistance, yield, oil composition, protein content) in a single unified breeding framework, reducing program complexity.
3Manufacturing precision
If traditional breeding methods are used to improve fatty acid profile and nutritional value, then the variety achieves enhanced nutritional characteristics, but the breeding process requires numerous generations of selection and crossing
Solution Approach 1:
The patent replaces traditional phenotypic selection for fatty acid profile (which requires harvesting, processing, and chemical analysis of seeds from multiple generations) with molecular marker-based selection. Specific DNA markers associated with fatty acid synthesis genes allow direct selection of plants with desired oil composition (oleic, linoleic, linolenic acid ratios) at the seedling stage, achieving the same manufacturing precision in fatty acid profile but dramatically improving breeding productivity.
Data Source
AI summary
A novel soybean variety, designated 97R71 is provided. Also provided are the seeds of soybean variety 97R71, cells from soybean variety 97R71, plants of soybean 97R71, and plant parts of soybean variety 97R71. Methods provided include producing a soybean plant by crossing soybean variety 97R71 with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety 97R71, methods for producing other soybean varieties or plant parts derived from soybean variety 97R71, and methods of characterizing soybean variety 97R71. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety 97R71 are further provided.