contribution to the characterization of the olive tree in steppe(study area khatata).commune of mesaad-wilaya of djelfa

dc.date.accessioned	2024-07-17T08:48:23Z
dc.date.available	2024-07-17T08:48:23Z
dc.date.issued	2023
dc.identifier.uri	http://dspace.univ-djelfa.dz:8080/xmlui/handle/123456789/6353
dc.description	after studying the root fungal symbiosis in the olive tree Olea europaea on two different age groups in the steppe, mycorrhizal fungi are observed in both age groups. Identical structures were detected in the treated root fragments through the use of optical microscopy. Our study showed that the frequency (F%) of fungal infection was same between the two age groups. Otherwise, the mycorrhizal colonisation in the root system (M%) and in the root fragments (m%) was different, same observation about the arbuscule abundance in mycorrhizal parts of root system (A%) and in the root fragments (a%). This variation could be due to the age of the tree. All mycorrhization parameters of adult trees are almost twice as high compared to young plants. At the end, it becomes evident that there is potential for further exploration of this aspect. Certainly the importance of transferring these resilient species rather than relying on synthetic chemicals and nutrients is crucial. Algeria has strongly encouraged the development of olive growing throughout the national territory. However, the presence of mycorrhizal symbiosis on the olive tree and particularly in the steppe is essential because it is an indicator of resilience to the climatic and edaphic conditions of this zone. Better yet, the older the plant gets, the more mycorrhiza it has in its root system. Hence the interest of this study which should contribute to helping the research community and farmers in this region.	en_EN
dc.description.abstract	Because of its mycotrophic caracter, and its capability to live in the steppic environment, the olive tree is the host in this symbiosis. In this work, the variation of mycorrhization parameters : mycorrhizal frequency in the root system (F%), Intensity of mycorrhizal colonisation in the root system (M%), Intensity of mycorrhizal colonisation in root fragments (m%), Abundance of arbuscules in the mycorrhizal parts of root fragments (a%), Abundance of arbuscules in the root system (A%) are studied in two different age groups, in order to understand the differences in this case for the establishment of the symbiosis in this species. The physico-chemical properties of soils (pH, electric conductivity, organic matter,total limestone amount and active limestone) were determined for the two age groups.The study shows The frequency of mycorrhization is equal in the two groups unlike the other parameters, the adult group had the highest amount of the M%, m%, a%, A%. parameters	en_EN
dc.language.iso	en	en_EN
dc.publisher	Université Ziane Achour – Djelfa – Faculté des Sciences de la Nature et de la Vie	en_EN
dc.subject	Olive tree, Mycorrhizae, Steppe, Mycorrhization parameters	en_EN
dc.title	contribution to the characterization of the olive tree in steppe(study area khatata).commune of mesaad-wilaya of djelfa	en_EN
dc.title.alternative	Plant Ecology and Environment	en_EN
dc.type	Thesis	en_EN