Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines
Drought is the most common cause of severe crop production shortage in developing countries, and global warming is predicted to further exacerbate drought’s impact. The present study investigates the efficiency of drought tolerance indices in classifying 24 super sweet maize inbred lines with the hi...
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Universitas Brawijaya
2020-09-01
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doaj-522bb50de0a3464a8b22b1c7fb2340362020-11-27T05:41:05ZengUniversitas BrawijayaAGRIVITA Journal of Agricultural Science0126-05372477-85162020-09-0142343544810.17503/agrivita.v42i3.2574541Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred LinesMohsen Shahrokhi0Saeed Khavari Khorasani1Asa Ebrahimi2Department of Biotechnology and Plant Breeding, Science and Research Branch, Islamic Azad University, Tehran, IranSeed and Plant Improvement Department, Khorasan Razavi Agriculture and Natural Resources Research and Education Center, AREEO, Mashhad, IranScientific Association of Biotechnology, Department of Biotechnology, Faculty of Agriculture and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, IranDrought is the most common cause of severe crop production shortage in developing countries, and global warming is predicted to further exacerbate drought’s impact. The present study investigates the efficiency of drought tolerance indices in classifying 24 super sweet maize inbred lines with the highest yield potential and drought tolerance performance. The experiment was conducted as a completely randomized block design with 4 replications. Twenty indices were compared based on grain yield, under two environments (Non-Stressed and Drought-Stress condition) during the 2018 growing season. All drought indices revealed significant differences among inbred lines, except GM. Results in ranking method, indicate that STI, GMP, MP, HARM, MRP, REI and RDY are suitable indicators because of positive correlations among each other and also the highest correlation with grain yield (GY) in both environments. Cluster analysis and threedimensional plots, showed inbred lines with the highest tolerance to drought, in both conditions. The first three principle components (PCs) explained 96.34% of total variation and the PC1 can be nominated as a potentially stable yield. The Biplot diagram based on PCs, and drought tolerance indices showed that MP, GMP, STI, HARM, MRP, REI, MSTIK1, MSTIK2 and YI were the best indices for screening tolerant inbred lines such as MCH87002/19-1, MPA90010/51-1 and MSH90011/82-1.https://agrivita.ub.ac.id/index.php/agrivita/article/view/2574cluster analysiscorrelationinbred linesprincipal component analysiszea mays |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mohsen Shahrokhi Saeed Khavari Khorasani Asa Ebrahimi |
spellingShingle |
Mohsen Shahrokhi Saeed Khavari Khorasani Asa Ebrahimi Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines AGRIVITA Journal of Agricultural Science cluster analysis correlation inbred lines principal component analysis zea mays |
author_facet |
Mohsen Shahrokhi Saeed Khavari Khorasani Asa Ebrahimi |
author_sort |
Mohsen Shahrokhi |
title |
Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines |
title_short |
Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines |
title_full |
Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines |
title_fullStr |
Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines |
title_full_unstemmed |
Evaluation of Drought Tolerance Indices for Screening Some of Super Sweet Maize (Zea mays L. var. saccharata) Inbred Lines |
title_sort |
evaluation of drought tolerance indices for screening some of super sweet maize (zea mays l. var. saccharata) inbred lines |
publisher |
Universitas Brawijaya |
series |
AGRIVITA Journal of Agricultural Science |
issn |
0126-0537 2477-8516 |
publishDate |
2020-09-01 |
description |
Drought is the most common cause of severe crop production shortage in developing countries, and global warming is predicted to further exacerbate drought’s impact. The present study investigates the efficiency of drought tolerance indices in classifying 24 super sweet maize inbred lines with the highest yield potential and drought tolerance performance. The experiment was conducted as a completely randomized block design with 4 replications. Twenty indices were compared based on grain yield, under two environments (Non-Stressed and Drought-Stress condition) during the 2018 growing season. All drought indices revealed significant differences among inbred lines, except GM. Results in ranking method, indicate that STI, GMP, MP, HARM, MRP, REI and RDY are suitable indicators because of positive correlations among each other and also the highest correlation with grain yield (GY) in both environments. Cluster analysis and threedimensional plots, showed inbred lines with the highest tolerance to drought, in both conditions. The first three principle components (PCs) explained 96.34% of total variation and the PC1 can be nominated as a potentially stable yield. The Biplot diagram based on PCs, and drought tolerance indices showed that MP, GMP, STI, HARM, MRP, REI, MSTIK1, MSTIK2 and YI were the best indices for screening tolerant inbred lines such as MCH87002/19-1, MPA90010/51-1 and MSH90011/82-1. |
topic |
cluster analysis correlation inbred lines principal component analysis zea mays |
url |
https://agrivita.ub.ac.id/index.php/agrivita/article/view/2574 |
work_keys_str_mv |
AT mohsenshahrokhi evaluationofdroughttoleranceindicesforscreeningsomeofsupersweetmaizezeamayslvarsaccharatainbredlines AT saeedkhavarikhorasani evaluationofdroughttoleranceindicesforscreeningsomeofsupersweetmaizezeamayslvarsaccharatainbredlines AT asaebrahimi evaluationofdroughttoleranceindicesforscreeningsomeofsupersweetmaizezeamayslvarsaccharatainbredlines |
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