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Articles by M`barek Ben Naceur
Total Records ( 2 ) for M`barek Ben Naceur
  Raoudha Abdellaoui , Hatem Cheik M’Hamed , M`barek Ben Naceur , Leila Bettaieb-Kaab and Jeannette Ben Hamida
  This research aim is to study whether we still have genetic diversity of barley all around the country, or there has been genetic erosion leading to a reduction in landraces barley cultivars. To fulfill this purpose, some ecotypes were collected from few frequented various bioclimatic regions and morpho-physiological and molecular level were studied. Our results showed differences among the ecotypes studied based on the morpho-physiological criteria such as heading date, density and ear length and response to saline stress. The molecular analysis showed the limits of the morpho-physiological approach. In fact, identical ecotypes were found grown in different parts of the country and the morpho-physiological differences observed could be due to environmental conditions’ adaptation acquired over time. Also, ecotypes that were grown mixed together in the same area and having similar physiological behavior were found different using the RAPD markers method. Important local barley genetic variability was found, concluding the Tunisian germplasm richness.
  Ramzi Chaabane , Houcine Bchini , Houda Ouji , Hammadi Ben Salah , Khalil Khamassi , Sahari Khoufi , Elyes Babay and M`barek Ben Naceur
  An experimental study was carried out under semi controlled conditions at National Agronomic Research Institute of Tunisia in Ariana experimental station. Eight main Tunisian Durum wheat (Triticum turgidum L.) varieties were grown under salinity conditions. The objectives of this research were to compare the behaviour of the varieties under salt stress. Many agronomic and physiological traits were evaluated under both saline (10 g NaCl/l) and non saline conditions (control). Results showed that salinity negatively affected all of the studied parameters. The tiller number, chlorophyll contents, height growth rate, shoot dry weight, spikes per plant, 1000-grain weight and total grain yield were significantly affected by salinity. However the plant height, spikelets per spike and grains per spike were much less affected by salinity. Correlation studies showed significant positive and negative correlations between salt tolerance indexes of different evaluated parameters. These results strongly suggest that the number of fertile tillers and shoot dry weight might be useful for salinity tolerance improvement programs of the analyzed genotypes.
 
 
 
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