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Articles by A. Benchaabane
Total Records ( 3 ) for A. Benchaabane
  A. Abbad , A. El Hadrami and A. Benchaabane
  The effect of salinity on the germination of the seeds before and after exposure to different NaCl concentrations were studied using seven Atriplex halimus provenances. The study showed a highly significant effect of salinity, provenance and their interaction on the percentage of germination. Seed germination was reduced in all provenances with an increase in salinity. Maximum germination levels were observed in tests using distilled water. SBO provenance showed a lesser reduction in germination in response to salt stress than other provenances. IDE provenance (Saharan provenance) showed low germination at 0% NaCl concentration and failed to germinate in 2% NaCl. Germination in distilled water indicated significantly different provenance responses. For TAO, IMS and SAL provenances, inhibition of germination was reversible, since the total germination after recovery of seeds exposed to three concentration of NaCl (1, 1.5 and 2%) did not differ significantly (P<0.05) from the distilled water control, whereas the inhibition of germination for NAD, OUD and IDE provenances are not reversible.
  A. Abbad , A. El Hadrami , I. El Hadrami and A. Benchaabane
  Compared analyses of the chemical composition of the ramets of three natural populations of Atriplex halimus placed in a common garden were carried out. The study showed a significant variability of chemical and nutritive value between the three Moroccan populations originating from three bio-climate contexts (semi arid, arid and saharan). This variability appears within and between populations according to the sampling date. Ramets from Safi (semi arid bio-climate) and Marrakech (arid bio-climate) showed high contents of crud proteins (21.59 to 25.07% and 19.56 to 25.48% during the humid period and 19.12 to 20.64% and 17.42 to 19.94% during the dry period, respectively). As for the total phosphorus contents, the two populations reached 0.12 to 0.17% and 0.12 to 0.19% during the dry period and 0.25 to 0.31% and 0.21 to 0.32% during the humid period, respectively. Lipid matter levels were high during the autumnal period and estimated respectively at 10.14 to 10.87% and 10.27 to 12.66% for the same populations. The highest contents of fiber (acid detergent fiber: ADF), of crud ash, sodium and calcium were observed during the dry period (June, July, August and October). A highly significant negative correlations (P<0.01) were found between crud protein, fibers (ADF), crud ash, sodium, potassium, calcium and iron. Whereas, a highly significant positive correlation (P<0.01) was detected between crud proteins, phosphorus and lipid fraction.
  A. Abbad , A. El Hadrami , I. El Hadrami and A. Benchaabane
  The product of biomass and the accumulation of the inorganic ions of seven Moroccan provenances of Atriplex halimus, treated with different concentrations of NaCl (0, 1, 2, 3 and 3.5%) was carried out. The study has shown a highly significant effect of provenance, salinity and their interaction (provenance x salinity). The production of the most significant biomass was recorded at 1 and 2% NaCl concentrations. High NaCl concentrations (3 and 3.5%) induce a reduction of the biomass. Among all the studied provenances, those Sidi Bouzid and Marrakech have shown the highest values of the biomass. As for the inorganic ions, the increase of salinity have generate an accumulation of Na+ and Cl- with a reduction of K+. This accumulation of the inorganic ions under salt stress was variable between provenances. This variability appears in relation with the polymorphism, which characterize the species. On the seven studied Moroccan provenances, those of Sidi Bouzid and Marrakech have shown a particular eco-physiological behaviour with a significant biomass production under salt stress.
 
 
 
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