Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content
Multi-environment trial studies provide an opportunity for the detailed analysis of complex traits. However, conducting trials across a large number of regions can be costly and labor intensive. The Australian National Variety Trials (NVT) provide grain yield and protein content (GPC) data of over 2...
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doaj-bf2234156925442699b0ed743895b59b2021-04-02T15:41:46ZengMDPI AGAgronomy2073-43952020-05-011075375310.3390/agronomy10050753Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein ContentVahid Rahimi Eichi0Mamoru Okamoto1Trevor Garnett2Paul Eckermann3Benoit Darrier4Matteo Riboni5Peter Langridge6School of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaSchool of Agriculture Food and Wine, University of Adelaide, Glen Osmond 5064, AustraliaMulti-environment trial studies provide an opportunity for the detailed analysis of complex traits. However, conducting trials across a large number of regions can be costly and labor intensive. The Australian National Variety Trials (NVT) provide grain yield and protein content (GPC) data of over 200 wheat varieties in many and varied environments across the Australian wheat-belt and is representative of similar trials conducted in other countries. Through our analysis of the NVT dataset, we highlight the advantages and limitations in using these data to explore the relationship between grain yield and GPC in the low yielding environments of Australia. Eight environment types (ETs), categorized in a previous study based on the time and intensity of drought stress, were used to analyze the impact of drought on the relationship between grain yield and protein content. The study illustrates the value of comprehensive multi-environment analysis to explore the complex relationship between yield and GPC, and to identify the most appropriate environments to select for a favorable relationship. However, the NVT trial design does not follow the rigor associated with a normal genotype × environment study and this limits the accuracy of the interpretation.https://www.mdpi.com/2073-4395/10/5/753National Variety Trialsgrain protein contentmulti-environmentgrain yieldhigh and low protein wheatenvironment type |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vahid Rahimi Eichi Mamoru Okamoto Trevor Garnett Paul Eckermann Benoit Darrier Matteo Riboni Peter Langridge |
spellingShingle |
Vahid Rahimi Eichi Mamoru Okamoto Trevor Garnett Paul Eckermann Benoit Darrier Matteo Riboni Peter Langridge Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content Agronomy National Variety Trials grain protein content multi-environment grain yield high and low protein wheat environment type |
author_facet |
Vahid Rahimi Eichi Mamoru Okamoto Trevor Garnett Paul Eckermann Benoit Darrier Matteo Riboni Peter Langridge |
author_sort |
Vahid Rahimi Eichi |
title |
Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content |
title_short |
Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content |
title_full |
Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content |
title_fullStr |
Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content |
title_full_unstemmed |
Strengths and Weaknesses of National Variety Trial Data for Multi-Environment Analysis: A Case Study on Grain Yield and Protein Content |
title_sort |
strengths and weaknesses of national variety trial data for multi-environment analysis: a case study on grain yield and protein content |
publisher |
MDPI AG |
series |
Agronomy |
issn |
2073-4395 |
publishDate |
2020-05-01 |
description |
Multi-environment trial studies provide an opportunity for the detailed analysis of complex traits. However, conducting trials across a large number of regions can be costly and labor intensive. The Australian National Variety Trials (NVT) provide grain yield and protein content (GPC) data of over 200 wheat varieties in many and varied environments across the Australian wheat-belt and is representative of similar trials conducted in other countries. Through our analysis of the NVT dataset, we highlight the advantages and limitations in using these data to explore the relationship between grain yield and GPC in the low yielding environments of Australia. Eight environment types (ETs), categorized in a previous study based on the time and intensity of drought stress, were used to analyze the impact of drought on the relationship between grain yield and protein content. The study illustrates the value of comprehensive multi-environment analysis to explore the complex relationship between yield and GPC, and to identify the most appropriate environments to select for a favorable relationship. However, the NVT trial design does not follow the rigor associated with a normal genotype × environment study and this limits the accuracy of the interpretation. |
topic |
National Variety Trials grain protein content multi-environment grain yield high and low protein wheat environment type |
url |
https://www.mdpi.com/2073-4395/10/5/753 |
work_keys_str_mv |
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