| Titre : |
Effet de l’inoculation des céréales par les PGPR et les mycorhizes en condition de déficit hydrique |
| Type de document : |
texte imprimé |
| Auteurs : |
Wassila Nadji, Auteur ; Abdelhamid Djekoun, Directeur de thèse |
| Editeur : |
جامعة الإخوة منتوري قسنطينة |
| Année de publication : |
2017 |
| Importance : |
128 f. |
| Format : |
30 cm. |
| Note générale : |
2 copies imprimées disponibles.
|
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Biologie
|
| Tags : |
Durum wheat soft wheat barley triticale water stress inoculation Frankia Azospirillum mycorrhizal spores diversity Blé dur blé tendre orge stress hydrique Frankia Cci3 Azospirillum brasilense spores des mycorhizes diversité القمح الصلب القمح اللين الشعير التريتيكال الاجھاد المائي أبواغ الميكوريزا المعالجة التطعيم التنوع |
| Index. décimale : |
570 Sciences de la vie. Biologie |
| Résumé : |
In Algeria, cereal production remains deficient and does not meet growing demand. It is strongly linked on the first hand to climatic conditions, water stress, increased abnormal temperatures, low rainfall and on the other hand to the characteristic of soils which lack nitrogen and phosphorus and all these factors affect and fall yields. Several approaches to improve cereal production are used, among which is the method based on the use of microorganisms such as Plant Growth Promoting Rhizobacteria (PGPR) and arbuscular mycorrhizal fungi which are the
main symbiotic components of the soil. These fungal symbiotes are known in the course of the main biogeochemical cycles of soils in the growth of plants by promoting their mineral and hydric nutrients. The aim of this work is to study the diversity of endomycorrhizal spores in durum wheat fields (Triticum durum) in arid, semi-arid and coastal zones. Soil samples were collected from the Algerian eastern wheat patches, the spores were isolated by the wet sieving method 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 mycorhization parameters were calculated. The field soil of the semi-arid regions of the eastern region is clayey limono and clay loam, its pH is alkaline (7.54-8.27), the total nitrogen content is (0.023 to 0.082%), Phosphorus are between (1.63% -7.74%). The presence of several morphotypes was noted. The latter are classified as follows: Glomeraceae, Acaulosporaceae, Scutellosporaceae with a predominance of Glomeraceae in the different sites according to the climate and the
nature of the soils. The presence of these families demonstrates biodiversity in the plots of wheat in eastern Algeria. Secondly a comparative study on the morphological and biochemical physiological level of the behavior of plants inoculated by mycrosymbiotes of two genotypes of durum wheat, soft wheat, barley and triticale in the presence or absence of water stress Under greenhouse conditions under controlled conditions. Trials were conducted for three years.
These genotypes were inoculated with three Frankia Cci3 inocula, Azospirillum brasilense and mycorrhizal spores. After cultivation, the plants were harvested. The growth parameters were measured as well as the dry weight of the plant and roots and the chlorophyll and nitrogen levels.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. The Azospirillum (AI) treatment has a favorable effect on the nitrogen content accumulated in the
leaves of the inoculated plants and the plants inoculated under water stress compared to the control plants
|
| Diplôme : |
Doctorat |
| En ligne : |
../theses/biologie/NAD7171.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10586 |
Effet de l’inoculation des céréales par les PGPR et les mycorhizes en condition de déficit hydrique [texte imprimé] / Wassila Nadji, Auteur ; Abdelhamid Djekoun, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 128 f. ; 30 cm. 2 copies imprimées disponibles.
Langues : Français ( fre)
| Catégories : |
Français - Anglais
Biologie
|
| Tags : |
Durum wheat soft wheat barley triticale water stress inoculation Frankia Azospirillum mycorrhizal spores diversity Blé dur blé tendre orge stress hydrique Frankia Cci3 Azospirillum brasilense spores des mycorhizes diversité القمح الصلب القمح اللين الشعير التريتيكال الاجھاد المائي أبواغ الميكوريزا المعالجة التطعيم التنوع |
| Index. décimale : |
570 Sciences de la vie. Biologie |
| Résumé : |
In Algeria, cereal production remains deficient and does not meet growing demand. It is strongly linked on the first hand to climatic conditions, water stress, increased abnormal temperatures, low rainfall and on the other hand to the characteristic of soils which lack nitrogen and phosphorus and all these factors affect and fall yields. Several approaches to improve cereal production are used, among which is the method based on the use of microorganisms such as Plant Growth Promoting Rhizobacteria (PGPR) and arbuscular mycorrhizal fungi which are the
main symbiotic components of the soil. These fungal symbiotes are known in the course of the main biogeochemical cycles of soils in the growth of plants by promoting their mineral and hydric nutrients. The aim of this work is to study the diversity of endomycorrhizal spores in durum wheat fields (Triticum durum) in arid, semi-arid and coastal zones. Soil samples were collected from the Algerian eastern wheat patches, the spores were isolated by the wet sieving method 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 mycorhization parameters were calculated. The field soil of the semi-arid regions of the eastern region is clayey limono and clay loam, its pH is alkaline (7.54-8.27), the total nitrogen content is (0.023 to 0.082%), Phosphorus are between (1.63% -7.74%). The presence of several morphotypes was noted. The latter are classified as follows: Glomeraceae, Acaulosporaceae, Scutellosporaceae with a predominance of Glomeraceae in the different sites according to the climate and the
nature of the soils. The presence of these families demonstrates biodiversity in the plots of wheat in eastern Algeria. Secondly a comparative study on the morphological and biochemical physiological level of the behavior of plants inoculated by mycrosymbiotes of two genotypes of durum wheat, soft wheat, barley and triticale in the presence or absence of water stress Under greenhouse conditions under controlled conditions. Trials were conducted for three years.
These genotypes were inoculated with three Frankia Cci3 inocula, Azospirillum brasilense and mycorrhizal spores. After cultivation, the plants were harvested. The growth parameters were measured as well as the dry weight of the plant and roots and the chlorophyll and nitrogen levels.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. The Azospirillum (AI) treatment has a favorable effect on the nitrogen content accumulated in the
leaves of the inoculated plants and the plants inoculated under water stress compared to the control plants
|
| Diplôme : |
Doctorat |
| En ligne : |
../theses/biologie/NAD7171.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10586 |
|
Affiner la recherche Interroger des sources externesEffet de l’inoculation des céréales par les PGPR et les mycorhizes en condition de déficit hydrique / Wassila Nadji
