Effects of drought stress on some agronomic and morphological traits of durum wheat (Triticum durum Desf.) landraces under greenhouse condition

2011 ◽  
Vol 10 (64) ◽  
pp. 14097-14107 ◽  
Author(s):  
Ahmadizadeh Mostafa ◽  
Nori Ali ◽  
Shahbazi Hossein ◽  
Habibpour Mehdi
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Triticum Durum ◽  
Morphological Traits ◽  
Greenhouse Condition ◽  
Effects Of Drought ◽  
Triticum Durum Desf

Screening for PEG-induced drought stress tolerance in seedlings of durum wheat (Triticum durum Desf.) cultivars

2020 ◽  
Vol 53 (3) ◽  
Author(s):  
Afef Othmani ◽  
Sourour Ayed ◽  
Zoubeir Chamekh ◽  
Olfa Slama-Ayed ◽  
Jaime A. Teixeira Da Silva ◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Stress Tolerance ◽  
Triticum Durum ◽  
Drought Stress Tolerance ◽  
Triticum Durum Desf

Effect of Silicon Supply Methods on Durum Wheat (Triticum durum Desf.) Response to Drought Stress

Silicon ◽  
2020 ◽  
Author(s):  
Afef Othmani ◽  
Sourour Ayed ◽  
Oumaima Bezzin ◽  
Muhammad Farooq ◽  
Olfa Ayed-Slama ◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Triticum Durum ◽  
Triticum Durum Desf

Screening for durum wheat (Triticum durum Desf.) cultivar resistance to drought stress using an integrated physiological approach

2020 ◽  
Vol 23 (4) ◽  
pp. 355-365
Author(s):  
Amira Guellim ◽  
Bertrand Hirel ◽  
Olivier Chabrerie ◽  
Manuella Catterou ◽  
Thierry Tetu ◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Triticum Durum ◽  
Cultivar Resistance ◽  
Physiological Approach ◽  
Triticum Durum Desf

scholarly journals Intraspecific diversity of durum wheat (Triticum durum Desf.): a unif ied classif ication

2021 ◽  
Vol 25 (3) ◽  
pp. 260-268
Author(s):  
О. A. Lyapunova
Keyword(s):  
Genetic Resources ◽  
Durum Wheat ◽  
Triticum Durum ◽  
Morphological Traits ◽  
Intraspecific Diversity ◽  
Individual Species ◽  
Triticum Durum Desf ◽  
Botanical Varieties ◽  
Intraspecific Classification

The Department of Wheat Genetic Resources of the All-Russian Research Institute of Plant Genetic Resources (VIR) had developed and published in 1979 a classification of the genus Triticum L., which is based on the genomic composition of species and the presence or absence of a number of main genes that govern the “classification” traits. The grounds have been laid by F. Körnicke and J. Percival, and supplemented by N.I. Vavilov and K.A. Flaksberger. The classification, which is most often referred to as the “Classification of Triticum by Dorofeev et al.”, belongs to a number of the main modern classifications of the genus. This is the world’s first standardized system that contains all known intraspecific (infraspecific) taxa of wild and cultivated wheat species. A detailed classification makes it possible to identify a wide variety of forms in the genus Triticum L. and its individual species, which is especially important for collections preserved in genetic seed banks. The use of the intraspecific classification of the genus Triticum L. greatly simplifies the identification of the VIR collection accessions introduced from various sources or checking accession identity after regeneration in the field. However, the direct use of such a voluminous classification meets several difficulties. Therefore, we propose a unified intraspecific classification of durum wheat, based on the description of only 16 main botanical varieties out of 131 described so far, which have complexes of morphological traits of the spike and kernel that occur most frequently in durum wheat collections. The remaining 115 botanical varieties, which have additional traits, get their name by the addition of the abbreviated Latin name of one or another additional trait to the main name. Having mastered this way of describing the morphological traits of accessions, any user can easily navigate oneself in the systematized intraspecific diversity of collections. The purpose of this work is to acquaint the reader with the intraspecific classification of durum wheat (Triticum durum Desf.) developed at VIR and to offer its simplified version, which is based on the identification of the main and additional morphological traits of the spike and kernel.

Physiological attributes associated with early-season drought resistance in spring durum wheat cultivars

1998 ◽  
Vol 78 (2) ◽  
pp. 227-237 ◽  
Author(s):  
R. El Hafid ◽  
Dan H. Smith ◽  
M. Karrou ◽  
K. Samir
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Durum Wheat ◽  
Drought Resistance ◽  
Triticum Durum ◽  
Dry Matter ◽  
Wheat Cultivars ◽  
Early Season ◽  
Physiological Attributes ◽  
Triticum Durum Desf

One of the common features of the Mediterranean climate in North Africa is the uncertainty of rainfall immediately after wheat (Triticum durum Desf) emerges. Relatively little work has been done to compare the drought resistance of spring durum wheat cultivars under early-season drought stress. There is a limited insight into the physiological basis of spring durum wheat drought resistance in rainfed Mediterranean regions. Field experiments were conducted in 1995 and 1996 growing seasons, and a greenhouse experiment was conducted in 1996 to examine differences in some physiological characters among six spring durum wheat cultivars in response to different durations of early-season drought, and rewatering; and to determine the relationships of these characters to drought resistance. Six spring durum wheat cultivars were evaluated under four water regimes. Water regime treatments were: a well-irrigated treatment; and three water deficit treatments imposed during the period from emergence through either the onset of tillering, mid-tillering or the end of tillering. Cultivars differed widely in their response to early season water stress. Under drought stress conditions, grain yield, aboveground dry matter yield, water use efficiency for the grain (WUEg) and for the total dry matter (WUEdm) were strongly positively associated with net CO2 uptake:transpiration ratio (A/E), and osmoregulation capacity. It is concluded that drought-induced changes in A, A/E, stomatal resistance, and osmotic adjustment are possible key control points in determining the drought-resistance of a cultivar. Furthermore, there is a substantial degree of intraspecific variation for the above mentioned physiological attributes to explore as a selection tool. Selection for high osmoregulation capacity and high A/E ratio would seem to be a justifiable means of improving total dry matter and grain yield under conditions of early-season water stress. Key words: Wheat, Triticum durum Desf., physiological attributes, early-season drought

scholarly journals Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

2015 ◽  
Vol 5 (2) ◽  
pp. 36
Author(s):  
Mourad Rezig ◽  
Hatem Cheikh M'hamed ◽  
Mbarek Ben Naceur
Keyword(s):  
Durum Wheat ◽  
Water Consumption ◽  
Triticum Durum ◽  
Deficit Irrigation ◽  
Irrigation Amount ◽  
Radiation Interception ◽  
Growing Seasons ◽  
Use Efficiency ◽  
Triticum Durum Desf ◽  
Radiation Use

<p class="4Body">Total Dray Matter (TDM), Photosynthetically Active Radiation Intercepted (PARabs), Water Consumption (WC), Water use- (WUE), Radiation use efficiency (RUE) and the Relation between Radiation Interception and Water Consumption for Durum Wheat were investigate under different irrigation amount (D<sub>1</sub>= 100 % ETc; D<sub>2</sub>= 70 % ETc; D<sub>3</sub>= 40 % ETc and D<sub>4</sub>= pluvial) and during three growing seasons (2005-2006, 2006-2007 and 2007-2008). Results showed that, the cumulative PARabs decreased with deficit irrigation. In fact, D<sub>1</sub> treatment recorded the highest cumulative PAR abs and the lowest marked under D<sub>4</sub> treatment. Similarly, TDM and RUE were decreased with deficit irrigation. The highest RUE observed under the D<sub>1</sub> (from 1.32 to 1.43 g MJ<sup>-1</sup>) and the lowest under D<sub>4</sub> (from 1.17 to 1.29 g MJ<sup>-1</sup>). However WUE increased with deficit irrigation. The highest WUE were obtained under the D<sub>4</sub> (from 3 to 4 kg m<sup>-3</sup>) and the lowest were observed under D<sub>1</sub> (from 2.8 to 3.1 kg m<sup>-3</sup>). Significant linear relationship was found between cumulative PAR abs and cumulative water consumption with a high correlation coefficient (R<sup>2</sup>) only under the two treatments D<sub>1</sub> and D<sub>2</sub>.</p>

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