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Article
Development of Optimized Phenomic Predictors for Efficient Plant Breeding Decisions Using Phenomic-Assisted Selection in Soybean
Plant Phenomics
  • Kyle Parmley, Iowa State University
  • Koushik Nagasubramanian, Iowa State University
  • Soumik Sarkar, Iowa State University
  • Baskar Ganapathysubramanian, Iowa State University
  • Asheesh K. Singh, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
7-28-2019
DOI
10.34133/2019/5809404
Abstract

The rate of advancement made in phenomic-assisted breeding methodologies has lagged those of genomic-assisted techniques, which is now a critical component of mainstream cultivar development pipelines. However, advancements made in phenotyping technologies have empowered plant scientists with affordable high-dimensional datasets to optimize the operational efficiencies of breeding programs. Phenomic and seed yield data was collected across six environments for a panel of 292 soybean accessions with varying genetic improvements. Random forest, a machine learning (ML) algorithm, was used to map complex relationships between phenomic traits and seed yield and prediction performance assessed using two cross-validation (CV) scenarios consistent with breeding challenges. To develop a prescriptive sensor package for future high-throughput phenotyping deployment to meet breeding objectives, feature importance in tandem with a genetic algorithm (GA) technique allowed selection of a subset of phenotypic traits, specifically optimal wavebands. The results illuminated the capability of fusing ML and optimization techniques to identify a suite of in-season phenomic traits that will allow breeding programs to decrease the dependence on resource-intensive end-season phenotyping (e.g., seed yield harvest). While we illustrate with soybean, this study establishes a template for deploying multitrait phenomic prediction that is easily amendable to any crop species and any breeding objective.

Comments

This article is published as Parmley, Kyle, Koushik Nagasubramanian, Soumik Sarkar, Baskar Ganapathysubramanian, and Asheesh K. Singh. "Development of Optimized Phenomic Predictors for Efficient Plant Breeding Decisions Using Phenomic-Assisted Selection in Soybean." Plant Phenomics 2019 (2019): 5809404. DOI: 10.34133/2019/5809404. Posted with permission.

Creative Commons License
Creative Commons Attribution 4.0
Copyright Owner
Kyle Parmley et al.
Language
en
File Format
application/pdf
Citation Information
Kyle Parmley, Koushik Nagasubramanian, Soumik Sarkar, Baskar Ganapathysubramanian, et al.. "Development of Optimized Phenomic Predictors for Efficient Plant Breeding Decisions Using Phenomic-Assisted Selection in Soybean" Plant Phenomics Vol. 2019 (2019) p. 5809404
Available at: http://works.bepress.com/baskar-ganapathysubramanian/88/