Behaviour of Tunisian Durum Wheat (Triticum turgidum L.) Varieties under Saline Stress

Chaabane, Ramzi; Bchini, Houcine; Ouji, Houda; Salah, H. Ben Haj; Khamassi, Khalil; Khoufi, Sahari; Babay, Elyes; Naceur, M’barek Ben

doi:10.3923/pjn.2011.539.542

Cited by 10 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For sorghum, no differences were found in SPAD values among control and salt treatment, regardless of genotype (data not shown). Reduction of leaf chlorophyll content at high salinity stress was reported in maize [20,[23][24][25] and other crops such as wheat [26], radish [27], and basil [28]. Again, the salinity stress was not severe enough to cause more significant differences in SPAD values for both crops between the treatments.…”

Section: Chlorophyll Fluorescence and Relativementioning

confidence: 82%

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Niu

Rodriguez

et al. 2012

ISRN Agronomy

View full text Add to dashboard Cite

The growth and physiological responses of four maize inbred lines (CUBA1, B73, B5C2, and BR1) and four sorghum hybrids (SS304, NK7829, Sordan 79, and KS585) to salinity were determined. Fifteen days after sowing, seedlings were irrigated with nutrient solution (control) at electrical conductivity (EC) of 1.5 dS m−1or saline solution at EC of 8.0 dS m−1(salt treatment) for 40 days. Dry weight of shoots in maize was reduced by 58%, 65%, 62%, and 69% in CUBA1, B73, B5C2, and BR1, respectively, while that of sorghum was reduced by 51%, 56%, 56%, and 76% in SS304, NK7829, Sordan79, and KS585, respectively, in the salt treatment compared to their respective control. Salinity stress reduced all or some of the gas exchange parameters, leaf transpiration (E), stomatal conductance (gs), and net photosynthetic rate (Pn) in the late part of the experiment for both crops. Salinity treatment greatly increased Na+uptake in all maize genotypes but did not affect the Na+uptake in sorghum, regardless of genotype. In maize, CUBA1 was slightly more resistant to salt stress, while BR1 was more sensitive to salt stress. In sorghum, Sordan79 was the most tolerant genotype, and KS585 was the least tolerant genotype.

show abstract

Section: Chlorophyll Fluorescence and Relativementioning

confidence: 82%

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Niu

Rodriguez

et al. 2012

ISRN Agronomy

View full text Add to dashboard Cite

show abstract

“…This inhibition may be due to formation of spikes during emergence and their abortion at later stages (Nicolas et al, 1994 andChaabane et al, 2011). Potassium humate and potassium silicate increased the productivity and maturity of produced grains where, all measured yield growth parameters expressed highly significant increase as a result of their pronounced roles in enhancing physiological processes and growth of seedling where, these effects reflected on growth of yielded grains in stressed plant.…”

Section: Yield Parametersmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

View full text Add to dashboard Cite

T HE PRESENT study was carried out to investigate the effect of high NaCl concentrations on some growth parameters and physiological processes of wheat (Triticum aestivum L.) plant. The results indicated that Gemeza.9 was the most sensitive cultivar to high salinity levels compared to all tested wheat cultivars. Moreover, salinity stress caused a reduction in the germination percentage by 65% and all growth parameters by 21%, 25% and 60% in the lengths of shoot, root and leaf area, also by 27% and 48% in fresh weights of shoot, root and 40% and 75% in dry weights of shoot and root. It also increased the activity of antioxidant enzymes (peroxidase and catalase), lipid peroxidation and ascorbic acid content. Salinity induced increase of osmolytes compounds such as total soluble proteins, carbohydrates and amino acids. Furthermore, all measured yield parameters, the percentage of grain's maturity and productivity were highly decreased. Accordingly, the role of potassium humate and potassium silicate either sole or combined in alleviating the toxic effect of salinity was also studied. Results showed that application of potassium humate as sole had a stimulatory effect higher than potassium silicate or their combination. It increased the germinating percentage by 128% at 200mM NaCl. In addition, potassium humate and potassium silicate increased the photosynthetic activity, decreased the activity antioxidant enzymes (Peroxidase and Catalase) as well as biosynthesis of MDA and ascorbic acid also they induced increase biosynthesis of proteins and carbohydrates in yielded grains. Accordingly, our study recommends the application of potassium humate as an organic fertilizer and potassium silicate as a foliar spray for improving the quality and quantity of the sensitive wheat cultivar Gemeza.9 cultivated in salty lands and increases its productivity.

show abstract

“…Shoot length, root length, dry weight and shoot fresh weight, grain yield and expression of genes encoding GS traits were found to be good markers of the response to a salt stress in durum wheat [18,[59][60][61][62]. A number of the genotypes used in our study have already been examined in field or controlled conditions in order to test their physiological and morphological responses in the presence of excess NaCl [37,[63][64][65][66][67][68]. In the present investigation, a panel of genotypes including those previously tested by other research groups, was used in order to study the impact of a salt tress on a much larger portfolio of phenotypic and physiological traits representative of plant growth and development and of primary C and N metabolism.…”

Section: Discussionmentioning

confidence: 99%

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

et al. 2019

View full text Add to dashboard Cite

Salinity is one of the most important stresses that reduces plant growth and productivity in several parts of the world. Nine Tunisian durum wheat genotypes grown under hydroponic conditions were subjected to two levels of salt stress (100 and 170 mM NaCl) for 21 days. An integrative analysis revealing the impact of salinity on key phenotypic and physiological marker traits was then conducted. Principal component analysis grouped these traits into three different clusters corresponding to the absence of salt stress and the two levels of salt stress. This analysis also allowed the identification of genotypes exhibiting various levels of tolerance to NaCl. Among the nine genotypes of Triticum durum Desf., cultivar Om Rabiaa was the most tolerant whereas cultivar Mahmoudi genotype was the most sensitive. Following the multivariate analysis of the examined phenotypic and physiological traits, we found that shoot length, shoot fresh weight, leaf area, the whole-plant stable isotope ratios of nitrogen (δ15N), shoot ammonium and proline contents, and shoot glutamine synthetase activity could be used as markers for the selection of salt-tolerant wheat genotypes.

show abstract

Behaviour of Tunisian Durum Wheat (Triticum turgidum L.) Varieties under Saline Stress

Cited by 10 publications

References 10 publications

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

Contact Info

Product

Resources

About