Browsing by Author "Dekhil Karawan"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Caractérisation morpho-physiologique, biochimique, cytogénétique et moléculaire de quelques variétés de blé dur (Triticum durum Desf). (Etude bibliographique)
    (Université Abbes Laghrour -Khenchela-, 2020-09-15) Bouzidi Razika; Dekhil Karawan; Encadreur: HAMADA .Y
    Abstract: Wheat is an important crop in terms of human consumption in many countries, and it is among the three major cereals along with rice and maize, and it is the third largest in the global harvest. This study aims to know the behavior of durum wheat varieties at the morphological, physiological, biochemical, cytogenetic and molecular level vis-à-vis water stress; as well as the effect of this constraint on the components of yield during plant development. Improving yield in wheat is a constant challenge for the farmer due to the biotic and abiotic stresses imposed by the growing conditions in the Mediterranean basin which limit production. The techniques adopted to achieve these objectives range from the improvement of morpho-physiological parameters linked to yield, to the use of biochemical markers through cytogenetic characterization until arriving at the use of molecular markers by mapping the genome. in order to develop more efficient varieties which manage to achieve good yield performances under biotic and abiotic stress conditions. In the first part, we examined the different physio-morphological, biochemical and cytogenetic characteristics of durum wheat. In the second part, we examined the effect of abiotic and biological limitations and the physiological and biochemical mechanisms of plant tolerance to water stress. In the third part, we examined the uses of molecular marker techniques in the improvement and development of plants.