scholarly journals Analysis of the phenotypic variability of some varieties of durum wheat (Triticum durum Desf) to improve the efficiency of performance under the constraining conditions of semiarid environments

2018 ◽  
Vol 8 (3) ◽  
pp. 1021 ◽  
Author(s):  
L Haddad ◽  
H Bouzerzour ◽  
A Benmahammed ◽  
H Zerargui ◽  
A Hannachi ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Triticum Durum ◽  
Phenotypic Variability ◽  
Semiarid Environments

scholarly journals Unlocking the Patterns of the Tunisian Durum Wheat Landraces Genetic Structure Based on Phenotypic Characterization in Relation to Farmer’s Vernacular Name

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 634
Author(s):  
Cyrine Robbana ◽  
Zakaria Kehel ◽  
Karim Ammar ◽  
Carlos Guzmán ◽  
M’Barek Ben Naceur ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Durum Wheat ◽  
Smallholder Farmers ◽  
Phenotypic Variability ◽  
Phenotypic Characterization ◽  
Ecological Niches ◽  
Dry Conditions ◽  
New Gene ◽  
Wheat Landraces ◽  
Durum Wheat Landraces

During the 1970s, Tunisian durum wheat landraces were replaced progressively by modern cultivars. These landraces are nowadays maintained by smallholder farmers in some ecological niches and are threatened gradually by extinction resulting in the narrowing of the genetic diversity. This study aims to investigate patterns of phenotypic variability using twelve quantitative traits in a panel of 189 durum wheat landraces and seven checks, based on farmer’s population name attribution and genetic structure. Our results showed high phenotypic variability among and within landraces and checks for ten out of twelve studied traits. The principal components analysis showed similar grouping using farmers name attribution and genetic structure using K = 6. These results confirmed the identification of a new gene pool in the oases of Tunisia, represented by the sub-population Jenah Zarzoura and the robustness and high relationships between phenotypic and genome-wide genetic structure using DArTseq method. These findings will enhance the conservation efforts of these landraces and their use in breeding efforts at national and international levels to adapt to dry conditions.

Weed management using tillage, seed rate and bed planting in durum wheat (Triticum durum Desf.) under an organic agriculture system

2021 ◽  
Author(s):  
Hasamuddin Hasam ◽  
Simerjeet Kaur ◽  
Harinderjeet Kaur ◽  
Navjyot Kaur ◽  
Tarundeep Kaur ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Organic Agriculture ◽  
Weed Management ◽  
Triticum Durum ◽  
Seed Rate ◽  
Triticum Durum Desf

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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