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Heat Tolerance of Durum Wheat (Tritcum durum Desf.) Elite Germplasm Tested along the Senegal River

Sall, Amadou T. and Cisse, Madiama and Gueye, Habibou and Kabbaj, Hafssa and Ndoye, Ibrahima and Filali-Maltouf, Abdelkarim and Belkadi, Bouchra and El-Mourid, Mohamed and Ortiz Rios, Rodomiro Octavio and Bassi, Filippo M. (2018). Heat Tolerance of Durum Wheat (Tritcum durum Desf.) Elite Germplasm Tested along the Senegal River. Journal of agricultural science. 10, 217-233
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Official URL: https://doi.org/10.5539/jas.v10n2p217

Abstract

The Senegal River basin (Guinea, Mali, Mauritania, and Senegal) is a key agricultural production area in sub-Saharan Africa. Here, rice fields are left fallow during the cooler winter season, when the night temperatures reach 16 °C but the maximum daily temperatures remain above 30 °C. This season was used for the first time to conduct multi- environmental trials of durum wheat. Twenty-four elite breeding lines and cultivars were tested for adaptation during seasons 2014-15 and 2015-16 at two stations: Kaedi, Mauritania and Fanaye, Senegal.
Phenological traits, grain yield and its components were recorded. Top grain yield was recorded at 5,330 kg ha-1 and the average yield at 2,484 kg ha-1. The season lasted just 90 days from sowing to harvest. Dissection of the yield in its components revealed that biomass and spike fertility (i.e. number of seeds produced per spike) were the most critical traits for adaptation to these warm conditions. This second trait was confirmed in a validation experiment conducted in 2016-17 at the same two sites. Genotype × environment interaction was dissected by AMMI model, and the derived IPC values used to derive an ‘AMMI wide adaptation index’ (AWAI) to asses yield stability. The use of a selection index that combined adjusted means of yield and AWAI identified three genotypes as the most stable and high yielding: ‘Bani Suef 5’, ‘DAWRyT118’, and ‘DAWRyT123’. The last two genotypes were also confirmed among the best in a validation trial conducted in season 2016-17. The data presented here are meant to introduce to the breeding community the use of these two research stations along the Senegal River for assessing heat tolerance of wheat or other winter cereals, as well as presenting two new ideal germplasm sources for heat tolerance, and the identification of spike fertility as the key trait controlling adaptation to heat stress.

Authors/Creators:Sall, Amadou T. and Cisse, Madiama and Gueye, Habibou and Kabbaj, Hafssa and Ndoye, Ibrahima and Filali-Maltouf, Abdelkarim and Belkadi, Bouchra and El-Mourid, Mohamed and Ortiz Rios, Rodomiro Octavio and Bassi, Filippo M.
Title:Heat Tolerance of Durum Wheat (Tritcum durum Desf.) Elite Germplasm Tested along the Senegal River
Series/Journal:Journal of agricultural science (1469-5146)
Year of publishing :2018
Volume:10
Page range:217-233
Number of Pages:17
Publisher:Canadian Center of Science and Education
ISSN:1469-5146
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Agrovoc terms:hard wheat, genotype environment interaction, yields, seasonal cropping
Keywords:AMMI, genotype × environment interaction, selection index, short season, durum breeding, Mauritania
URN:NBN:urn:nbn:se:slu:epsilon-e-4815
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4815
ID Code:15359
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
External funders:Swedish Research Council
Deposited By: SLUpub Connector
Deposited On:14 Mar 2018 13:35
Metadata Last Modified:14 Mar 2018 13:35

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