Wide crosses of durum wheat ( Triticum durum Desf.) reveal good disease resistance, yield stability, and industrial quality across Mediterranean sites

Zaim, Meryem; Hassouni, Khaoula El; Gamba, Fernanda; Filali‐Maltouf, Abdelkarim; Belkadi, Bouchra; Ayed, Sourour; Amri, Ahmed; Nachit, M. M.; Taghouti, Mona; Bassi, Filippo M.

doi:10.1016/j.fcr.2017.09.007

Cited by 35 publications

(38 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The principal breeding objective is to develop varieties with high grain yield and stability when exposed to different stresses. However, grain yield is a complex trait controlled by many genes and strongly influenced by the environment [80][81][82][83][84][85][86]. Therefore, a good understanding of traits and underlying loci associated with tolerance to elevated temperatures is of a great importance for breeding new heat tolerant cultivars [87].…”

Section: Dissection Of Heat-specific Qtls Associated With Yield-relatmentioning

confidence: 99%

Loci Controlling Adaptation to Heat Stress Occurring at the Reproductive Stage in Durum Wheat

et al. 2019

Self Cite

View full text Add to dashboard Cite

Heat stress occurring during the reproductive stage of wheat has a detrimental effect on productivity. A durum wheat core set was exposed to simulated terminal heat stress by applying plastic tunnels at the time of flowering over two seasons. Mean grain yield was reduced by 54% compared to control conditions, and grain number was the most critical trait for tolerance to this stress. The combined use of tolerance indices and grain yield identified five top performing elite lines: Kunmiki, Berghouata1, Margherita2, IDON37-141, and Ourgh. The core set was also subjected to genome wide association study using 7652 polymorphic single nucleotide polymorphism (SNPs) markers. The most significant genomic regions were identified in association with spike fertility and tolerance indices on chromosomes 1A, 5B, and 6B. Haplotype analysis on a set of 208 elite lines confirmed that lines that carried the positive allele at all three quantitative trait loci (QTLs) had a yield advantage of 8% when field tested under daily temperatures above 31 • C. Three of the QTLs were successfully validated into Kompetitive Allele Specific PCR (KASP) markers and explained >10% of the phenotypic variation for an independent elite germplasm set. These genomic regions can now be readily deployed via breeding to improve resilience to climate change and increase productivity in heat-stressed areas.

show abstract

Section: Dissection Of Heat-specific Qtls Associated With Yield-relatmentioning

confidence: 99%

Loci Controlling Adaptation to Heat Stress Occurring at the Reproductive Stage in Durum Wheat

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…The economic value of durum wheat cultivation is strongly supported by its wide range of end products . The determining factors of the overall quality of each durum product are explicitly customized and depend on the transformation status of the grain (cracked grain, milled semolina, etc.…”

Section: Technological Quality Of Durum Wheat: the Role Of Proteins Amentioning

confidence: 99%

From ancient to old and modern durum wheat varieties: interaction among cultivar traits, management, and technological quality

et al. 2018

View full text Add to dashboard Cite

Following the boom in durum wheat breeding, ancient wheat disappeared from the human diet and old durum wheat varieties were replaced by what is believed to be their better versions: higher yielding modern varieties grown in high-input systems. Breeders have worked intensely ever since to improve the quality of durum wheat traits -mainly gluten subunit alleles -to obtain superior technological quality in the main durum wheat end products (first pasta and then bread) but conflicts about predicting their quality still exist. This is because quality is neither governed by one trait alone nor conditioned by a single controllable factor. This review discusses the evolution of wheat varieties from ancient to old, and then modern durum wheat in terms of agronomy, genetics, technological, and end-product qualities. Environmental effects will not be discussed. Moving from ancient to modern durum wheat varieties, grain yield increased, grain protein concentration decreased, and gluten strength and dough toughness improved, ameliorating the quality of pasta but decreasing the durum wheat versatility.

show abstract

“…The two entries are in fact sister lines derived from top crossing the two most successful cultivars of the ICARDA durum program ('Om Rabi 5' and 'Cham 1') to Triticum dicoccoides collected in the surroundings of Aleppo (Table 1). Zaim et al (2017) already described the usefulness of using T. dicoccoides in breeding durum elites, and identified 'DAWRYT118' as a top performer across drought prone sites in North Africa, with strong disease resistance, and good industrial processing qualities. Hence, their use in crossing schemes by durum breeders targeting heat tolerance is highly advised.…”

Section: Selecting the Most Heat Tolerant Genotypesmentioning

confidence: 99%

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

Sall¹,

Cissé²,

Gueye³

et al. 2018

JAS

Self Cite

View full text Add to dashboard Cite

The research is financed by Swedish Research Council (Vetenskapsradet) U-Forsk2013, "Deployment of molecular durum breeding to the Senegal Basin: capacity building to face global warming". AbstractThe 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.

show abstract

Wide crosses of durum wheat ( Triticum durum Desf.) reveal good disease resistance, yield stability, and industrial quality across Mediterranean sites

Cited by 35 publications

References 50 publications

Loci Controlling Adaptation to Heat Stress Occurring at the Reproductive Stage in Durum Wheat

Loci Controlling Adaptation to Heat Stress Occurring at the Reproductive Stage in Durum Wheat

From ancient to old and modern durum wheat varieties: interaction among cultivar traits, management, and technological quality

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

Contact Info

Product

Resources

About