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Durum Wheat Breeding: In the Heat of the Senegal River

Sall, Amadou T. and Bassi, Filippo M. and Cisse, Madiama and Gueye, Habibou and Ndoye, Ibrahima and Filali-Maltouf, Abdelkarim and Ortiz Rios, Rodomiro Octavio (2018). Durum Wheat Breeding: In the Heat of the Senegal River. Agriculture. 8, 1-12
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Abstract

Global warming may cause +4 ◦C temperature increases before the end of this century. Heat tolerant bred-germplasm remains the most promising method to ensure farm productivity under this scenario. A global set of 384 durum wheat accessions were exposed to very high temperatures occurring along the Senegal River at two sites for two years. The goal was to identify germplasm with enhanced tolerance to heat. There was significant variation for all traits. The genetic (G) effect accounted for >15% of the total variation, while the genotype by environment interaction (G × E) reached 25%. A selection index that combines G and a G × E wide adaptation index was used to identify stable high yielding germplasm. Forty-eight accessions had a stable grain yield above the average (2.7 t ha−1 ), with the three top lines above 3.5 t ha−1 . Flowering time, spike fertility and harvest index were the most critical traits for heat tolerance, while 1000-kernel weight and spike density only had environment-specific effects. Testing of six subpopulations for grain yield across heat-prone sites revealed an even distribution among clusters, thus showing the potential of this panel for dissecting heat tolerance via association genetics.

Authors/Creators:Sall, Amadou T. and Bassi, Filippo M. and Cisse, Madiama and Gueye, Habibou and Ndoye, Ibrahima and Filali-Maltouf, Abdelkarim and Ortiz Rios, Rodomiro Octavio
Title:Durum Wheat Breeding: In the Heat of the Senegal River
Series/Journal:Agriculture (2077-0472)
Year of publishing :2018
Volume:8
Page range:1-12
Number of Pages:12
Publisher:MDPI
ISSN:2077-0472
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 > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:adaptation to heat, Africa, AMMI, drylands, global warming, rice-wheat rotation
URN:NBN:urn:nbn:se:slu:epsilon-e-4934
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4934
ID Code:15569
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:02 Jul 2018 09:21
Metadata Last Modified:10 Aug 2018 08:15

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