Browsing by Author "ZAHIRA BOUZIANE"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    ECOLOGICAL CHARACTERIZATION OF NATURAL HABITATS OF SOME VICIA L. SPECIES (FABACEAE) IN NORTHEASTERN ALGERIA
    (researchgate, 2022-06) ZAHIRA BOUZIANE
    Abstract Within the framework of the evaluation and development of plant genetic resources of fodder and pastoral interest in Algeria, a study was conducted on the characterization of the natural habitats corresponding to some Vicia species (Fabaceae). Following a prospecting and collection mission carried out across north-eastern Algeria (Blida, Boumerdes, Bouira, Tizi ouzou, Béjaia, Sétif), seven species were identified (Vicia sativa, Vicia disperma, Vicia monardi, Vicia narbonensis, Vicia ochroleuca, Vicia onobrychoides and Vicia lutea). Fifty (50) sites and five species were selected. For each site, three soil samples were randomly chosen. Sixteen (16) physico-chemical parameters were analysed (soil pH, conductivity, total limestone, total nitrogen, potassium, phosphorus, carbon, organic matter, C/N ratio, soil texture composition). Two (02) factors related to the topography (altitude) and climate (rainfall) of the natural habitats of the various vetches were also considered. The results of the variance analysis (anova and manova), applied to the physical and chemical characteristics of soils, indicated very highly significant variability in the majority of cases. Vetch species are adapted to soils of various textures, however, they are more frequently encountered on soils of balanced textures. Vetches are often found on soils of basic pH, less frequently on acidic or neutral soils. Many significant relationships have also been highlighted, particularly between most of the physico-chemical characteristics of the soils and some climatic and topographical factors (altitude, rainfall). The hierarchical analysis highlighted several groups of sites which confirming the observed variation. The work highlighted the wide capacity of Vicia species to adapt to different ecological conditions, particularly Vicia sativa and Vicia disperma. This work is a contribution to the conservation and enhancement of fodder legumes in Algeria, especially the endemic and rare ones, which would be threatened and endangered.
  • No Thumbnail Available
    Item
    NALYSIS OF THE MORPHOLOGICAL, PHENOLOGICAL AND BIOMETRICAL DIVERSITY IN SEVERAL ALGERIAN POPULATIONS OF TRIFOLIUM SUBTERRANEUM L. (FABACEAE)
    (researchgate, 2023) ZAHIRA BOUZIANE
    Abstract As part of the evaluation and the valorization of plant genetic resources of fodder and pastoral interest in Algeria, twentysix (26) natural populations of subterranean clover (Trifolium subterraneum L.), originating from different ecological habitats, were the subject of a morphological, phenological and biometrical study. In total, fifty (50) characteristics were considered (33 quantitative related to vegetative development, flowering, pods and 17 qualitative related to leaves, flowers and seeds). Two ecological factors (altitude and rainfall), concerning the natural habitats of the populations, were also considered. The analysis of variance highlighted the existence of significant intraspecific and inter-population variation for several traits. The Biometrical and phenological characteristics were more discriminating than qualitative ones (markers). Several significant correlations were observed between the markers and certain traits related to the reproduction and yield. Compared to the rainfall, the effect of the altitude was relatively more pronounced on the variation of certain quantitative and qualitative characteristics (seeds weight/fruiting heads weight ratio, flush intensity, crescent breadth and stem hairiness). The results of the PCA indicate a wide morpho-phenological and biometrical variation, particularly between the populations coming from the region of Guelma. The precocity, the vegetative development, the flower production and the fruiting heads weight permitted to classify the populations into three distinct groups. This study highlighted the importance of certain quantitative and qualitative characteristics in the infraspecific classification of the species T. subterraneum in Algeria and suggests that the populations collected in the Northeast of the country would correspond to the ssp. subterraneum. The diversified performances described in the Algerian populations of T. subterraneum require their preservation and valorization.