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.
Raoudha Abdellaoui, Hatem Cheik M’Hamed, M`barek Ben Naceur, Leila Bettaieb-Kaab and Jeannette Ben Hamida, 2007. Morpho-Physiological and Molecular Characterization of Some Tunisian Barley Ecotypes
. Asian Journal of Plant Sciences, 6: 261-268.