Abstract— Underarid and semi-arid ecosystems where drought, soil salinity and low soil fertility considerably limit crop production. Under such stressful growing conditions, an appropriate management of mycorrhizae may have a determinant impact on plant production, on the improvement of soil quality and the diversification of cultivated crops. In this context, the diversity of the arbuscularmycorrhizae flora in semi-arid agricultural soils of OuledGhanem and SidiBennour sites of the Doukkala region, Morocco was evaluated and the impact of soil physico-chemical factors on their root-colonization potential studied. The two selected studied sites are respectively characterised by neutral to alkaline substrates, low level of organic matter but differed in their respective texture, sandy soil and muddy soil and their low to medium available P contents. The comparative analysis of the arbuscular mycorrhizal flora reveals a certain amount of shared species and is characterized in sandy soils by a good proportion of Diversisporales: Scutellosporacalospora, Acaulosporacavernata, Entrophosporainfrequens, Gigaspora margarita when the muddy soils are inhabited with a majority of Glomerales (Glomus.sp). Correlation between physico-chemical and biological soil data enlighted the negative impact of alkalinity and available phosphorus on the soil root colonization potential. The comparative data analyses bring in a critical look at the possible interaction between fungal diversity, mycotrophic plant and root colonization.
Keywords— Arbuscular, mycorrhiza,biodiversity, Glomeromycetes, mycotrophic.
AD Publications is a rapidly growing academic publisher in the fields of Engineering, Medical-Health, Environmental Science and Agriculture Research. AD Publications is a registered organization broad-based open access and publishes most exciting researches with respect to the subjects of our journals. The Journals is being indexed and abstracted by all major global current awareness and alerting services. The organization aims at undertaking, co- coordinating and promoting research and development. It provides professional and academic guidance in the field of basic education, Higher Education as well in the Technical Education. Our Aims is to Promote and support, High Quality basic, Scientific Research and development in fields of Engineering, Medical-Health, Environmental Science and Agriculture Research and to Generate Public awareness, provide advice to scholar's researchers and communicate research outcomes.