Effet de l’inoculation des céréales par les PGPR et les mycorhizes en condition de déficit hydrique

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

0977e8a8-483d-47c6-a9ba-7ac95dfc1cf7

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

796076_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Abdelhamid Djekoun","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Wassila Nadji","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

French

المصدر والدورية

اسم المصدر

Effet de l’inoculation des céréales par les PGPR et les mycorhizes en condition de déficit hydrique

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

In Algeria, cereal production remains deficient and does not meet growing demand. It isstrongly linked on the first hand to climatic conditions, water stress, increased abnormaltemperatures, low rainfall and on the other hand to the characteristic of soils which lack nitrogenand phosphorus and all these factors affect and fall yields. Several approaches to improve cerealproduction are used, among which is the method based on the use of microorganisms such asPlant Growth Promoting Rhizobacteria (PGPR) and arbuscular mycorrhizal fungi which are themain symbiotic components of the soil. These fungal symbiotes are known in the course of themain biogeochemical cycles of soils in the growth of plants by promoting their mineral andhydric nutrients. The aim of this work is to study the diversity of endomycorrhizal spores indurum wheat fields (Triticum durum) in arid, semi-arid and coastal zones. Soil samples werecollected from the Algerian eastern wheat patches, the spores were isolated by the wet sievingmethod and observed under the binocular microscope to sort and count according to color,shape and size. Physico-chemical and catabolic analyzes of soils as well as mycorhizationparameters were calculated. The field soil of the semi-arid regions of the eastern region is clayeylimono and clay loam, its pH is alkaline (7.54-8.27), the total nitrogen content is (0.023 to0.082%), Phosphorus are between (1.63% -7.74%). The presence of several morphotypes wasnoted. The latter are classified as follows: Glomeraceae, Acaulosporaceae, Scutellosporaceaewith a predominance of Glomeraceae in the different sites according to the climate and thenature of the soils. The presence of these families demonstrates biodiversity in the plots ofwheat in eastern Algeria. Secondly a comparative study on the morphological and biochemicalphysiological level of the behavior of plants inoculated by mycrosymbiotes of two genotypesof durum wheat, soft wheat, barley and triticale in the presence or absence of water stress Undergreenhouse conditions under controlled conditions. Trials were conducted for three years.These genotypes were inoculated with three Frankia Cci3 inocula, Azospirillum brasilense andmycorrhizal spores. After cultivation, the plants were harvested. The growth parameters weremeasured as well as the dry weight of the plant and roots and the chlorophyll and nitrogenlevels.The obtained results are significant. They show that inoculation with mycorrhizal spores(IM) treatment improves the growth of the plant in length of ear leaves and roots. TheAzospirillum (AI) treatment has a favorable effect on the nitrogen content accumulated in theleaves of the inoculated plants and the plants inoculated under water stress compared to thecontrol plants

إشراف وإعداد

الإشراف

Abdelhamid Djekoun

الإعداد

Wassila Nadji

الاقتباسات الببليوغرافية