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Affiner la recherche Interroger des sources externesCaractérisation de la tolérance à la sécheresse chez le blé dur (Triticum durum Desf) / Ratiba Bousba
Titre : Caractérisation de la tolérance à la sécheresse chez le blé dur (Triticum durum Desf) : Analyse de la physiologie et de la capacité en production Type de document : texte imprimé Auteurs : Ratiba Bousba, Auteur ; Nadia Ykhlef, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2012 Importance : 169 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Triticum durum Desf stress hydrique adaptation Photosynthèse nette WUE R. stomatique TRE osmolytes génétique d'association SSR et PIC water deficit Net Photosynthesis R. stomatal RWC association genetic SSR and PIC ????? ?????? ???????? ?????????????? ??????? ??????? ?????? ? ???????? ???????? Index. décimale : 570 Sciences de la vie. Biologie Résumé :
Knowledge of the physiological characteristics, biochemical and agronomic processes involved in plant adaptation to abiotic stresses is a milestone in fight against drought. Forty varieties of wheat (Triticum durum) from various sources were used in this study. With three experiments, a semi-controlled test conditions, a field test and a controlled test in growth room, with each experiment, stressful conditions (rain or water deficit) and irrigated. In the first trial several physiological parameterswere studied on six varieties of durum wheat. However, the second trial was conducted in order to compare field production and performance of varieties studied in culture conditions, several measurements were made during development of the plant phenological traits, physiological such as water status of the plant (RWC and RWL) and osmotic potential, morphological parameters and yield and its components. A third experiment was conducted in this study to determine the genetic basis of phenotypic variation. This approach analyzes the statistical association between phenotypic variation and genetic polymorphism using molecular markers like SSR (Simple Sequence Repeat). The results show highly significant genotypic differences for all measured parameters. The recorded observations show that water deficit causes, in all varieties, a progressive decrease of chlorophyll and increased stomatal resistance resulting in a decrease in photosynthetic activity and consequently a decrease in production of dry matter. However, under the same conditions of water stress, introduced varieties have good ability to adaptations ompared to local varieties. Nevertheless the variety (Beliouni) is the variety most productive compared to other local varieties. Positive
correlations were observed betweennet photosynthesis and production ofdry matter. And a significant effect stress and genotype was revealed in the second test, our results show that the water deficit causes a decrease in the relative water content and osmotic potential TRE (Po) of all varieties, which was adjusted by an accumulation of soluble sugarsand proline. This accumulation of osmoticums was very important, very well marked among varieties under stress. Concerning the molecular approach and the genetic association between genotypic and phenotypic variation. The results of this section have shown that phenotypic variation are highly significant, as revealed by a principal component analysis, describing 74% of total variation introduced by two axes ; CP1 and CP2. The hierarchical classification (cluster)show the distribution of genotypes according to their phenotypic variation, based on their origins. For association analysis, the results show that the markers used are significantly associated with the traits studied. The majority of these studied markers were significantly associated with the traits studied , located on chromosome4B. For productivity , three significant SSR markers were detected respectively associated: (WMS149 (p <0.01), WMS30_2) (p <0.05), WMC177_2 ( p <0.05) respectively with 68.94%, 99.46% and 49.74% of phenotypic variation, located on chromosome 4B, 3A and 2A. Also, the hypothesis of association of SSR with heading date (HD) was tested by the GLM (General Linear Model), two SSR markers were found significantly associated with HD they are: (WMS6(p <0.01) located on chromosome 4B, with 96.84% of phenotypic variation, and WMC445(p <0.05) on chromosome 5A with 32.46% of phenotypic variation.
Our results also reveal a significant allelic diversity is characterized by high values of polymorphism information content (PIC), the mean value obtained for all primers was 74%, the highest ones were obtained for WMC177and WMC78markers with (94% and 93%), respectively,
this is in agreement with the large number of alleles detected by these markers, these results reinforces and justify the choice to use these primers association analysis in our durum wheat varieties.Diplôme : Doctorat en sciences En ligne : ../theses/biologie/BOU6394.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9409 Caractérisation de la tolérance à la sécheresse chez le blé dur (Triticum durum Desf) : Analyse de la physiologie et de la capacité en production [texte imprimé] / Ratiba Bousba, Auteur ; Nadia Ykhlef, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2012 . - 169 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Triticum durum Desf stress hydrique adaptation Photosynthèse nette WUE R. stomatique TRE osmolytes génétique d'association SSR et PIC water deficit Net Photosynthesis R. stomatal RWC association genetic SSR and PIC ????? ?????? ???????? ?????????????? ??????? ??????? ?????? ? ???????? ???????? Index. décimale : 570 Sciences de la vie. Biologie Résumé :
Knowledge of the physiological characteristics, biochemical and agronomic processes involved in plant adaptation to abiotic stresses is a milestone in fight against drought. Forty varieties of wheat (Triticum durum) from various sources were used in this study. With three experiments, a semi-controlled test conditions, a field test and a controlled test in growth room, with each experiment, stressful conditions (rain or water deficit) and irrigated. In the first trial several physiological parameterswere studied on six varieties of durum wheat. However, the second trial was conducted in order to compare field production and performance of varieties studied in culture conditions, several measurements were made during development of the plant phenological traits, physiological such as water status of the plant (RWC and RWL) and osmotic potential, morphological parameters and yield and its components. A third experiment was conducted in this study to determine the genetic basis of phenotypic variation. This approach analyzes the statistical association between phenotypic variation and genetic polymorphism using molecular markers like SSR (Simple Sequence Repeat). The results show highly significant genotypic differences for all measured parameters. The recorded observations show that water deficit causes, in all varieties, a progressive decrease of chlorophyll and increased stomatal resistance resulting in a decrease in photosynthetic activity and consequently a decrease in production of dry matter. However, under the same conditions of water stress, introduced varieties have good ability to adaptations ompared to local varieties. Nevertheless the variety (Beliouni) is the variety most productive compared to other local varieties. Positive
correlations were observed betweennet photosynthesis and production ofdry matter. And a significant effect stress and genotype was revealed in the second test, our results show that the water deficit causes a decrease in the relative water content and osmotic potential TRE (Po) of all varieties, which was adjusted by an accumulation of soluble sugarsand proline. This accumulation of osmoticums was very important, very well marked among varieties under stress. Concerning the molecular approach and the genetic association between genotypic and phenotypic variation. The results of this section have shown that phenotypic variation are highly significant, as revealed by a principal component analysis, describing 74% of total variation introduced by two axes ; CP1 and CP2. The hierarchical classification (cluster)show the distribution of genotypes according to their phenotypic variation, based on their origins. For association analysis, the results show that the markers used are significantly associated with the traits studied. The majority of these studied markers were significantly associated with the traits studied , located on chromosome4B. For productivity , three significant SSR markers were detected respectively associated: (WMS149 (p <0.01), WMS30_2) (p <0.05), WMC177_2 ( p <0.05) respectively with 68.94%, 99.46% and 49.74% of phenotypic variation, located on chromosome 4B, 3A and 2A. Also, the hypothesis of association of SSR with heading date (HD) was tested by the GLM (General Linear Model), two SSR markers were found significantly associated with HD they are: (WMS6(p <0.01) located on chromosome 4B, with 96.84% of phenotypic variation, and WMC445(p <0.05) on chromosome 5A with 32.46% of phenotypic variation.
Our results also reveal a significant allelic diversity is characterized by high values of polymorphism information content (PIC), the mean value obtained for all primers was 74%, the highest ones were obtained for WMC177and WMC78markers with (94% and 93%), respectively,
this is in agreement with the large number of alleles detected by these markers, these results reinforces and justify the choice to use these primers association analysis in our durum wheat varieties.Diplôme : Doctorat en sciences En ligne : ../theses/biologie/BOU6394.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9409 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6394 BOU/6394 Thèse Bibliothèque principale Thèses Disponible Documents numériques
BOU6394_1.pdfAdobe Acrobat PDF
texte intégraleAdobe Acrobat PDF
Titre : Caractérisation des transferts convectifs a l’intérieur de mini- et de micro-canaux Type de document : texte imprimé Auteurs : Yassine Kabar, Auteur ; Colette Padet, Directeur de thèse ; Mahfoud Kadja, Directeur de thèse ; Mourad Rebay, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2010 Autre Editeur : Ardenne : Université de Reims Importance : 154 f. Format : 31 cm Note générale : Doctorat en sciences
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Transfert de chaleur conjugué la conduction axiale la dissipation visqueuse raréfaction micro-canaux résolution numérique. Génie Mécanique Index. décimale : 620 Génie Mécanique Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/KAB5951.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5756 Caractérisation des transferts convectifs a l’intérieur de mini- et de micro-canaux [texte imprimé] / Yassine Kabar, Auteur ; Colette Padet, Directeur de thèse ; Mahfoud Kadja, Directeur de thèse ; Mourad Rebay, Directeur de thèse . - Constantine : Université Mentouri Constantine : Ardenne : Université de Reims, 2010 . - 154 f. ; 31 cm.
Doctorat en sciences
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Transfert de chaleur conjugué la conduction axiale la dissipation visqueuse raréfaction micro-canaux résolution numérique. Génie Mécanique Index. décimale : 620 Génie Mécanique Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/KAB5951.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5756 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KAB/5951 KAB/5951 Thèse Bibliothèque principale Thèses Disponible
Titre : Caractéristiques optiques et structurales des couches minces de titane obtenues par voie Sol-Gel Type de document : texte imprimé Auteurs : Dounia Adnane ; Rabah Bensaha, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2005 Importance : 103 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Couches minces Sol-gel Oxyde de titane Index. décimale : 530 Physique Résumé : TiO2 thin films were prepared on glass and ITO substrate by sol–gel process. Their structural and optical properties were examined of different steeping at various calcination temperatures. The films were characterized with X-ray Diffractométre, DSC, fluorescence X spectroscopy, UV-VISIBLE spectroscopy, optical microscopy and Fourier transform infrared spectroscopy (FTIR). The XRD
patterns show that the xerogel of TiO2 are amorphous, and they transform into the anatase phase from 350°C, and we notice the appearance of the phase brookite after 400°C. In the case of the sample obtained with 400°C and 10 steepings , we
observe the appearance of the phase rutile , normally this one must appear with
800°C. The crystallite size of TiO2 thin films is increased with increasing
calcination temperature. The color of the thin layers obtained varies according to
the temperature of annealing and of the number of steeping. The thickness varies
between 20–285nm. The thermal analysis of the powder shows that the
crystallization of TiO2 is from 400°C. The thin layers of TiO2 are transparent in the
visible and opaque in UV, and this some are the temperature of annealing and the
number of steeping. The increase in the number of steeping returns the layers
opaque, what minimizes their transmission.Diplôme : Magistère En ligne : ../theses/physique/ADN4465.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3597 Caractéristiques optiques et structurales des couches minces de titane obtenues par voie Sol-Gel [texte imprimé] / Dounia Adnane ; Rabah Bensaha, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2005 . - 103 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Couches minces Sol-gel Oxyde de titane Index. décimale : 530 Physique Résumé : TiO2 thin films were prepared on glass and ITO substrate by sol–gel process. Their structural and optical properties were examined of different steeping at various calcination temperatures. The films were characterized with X-ray Diffractométre, DSC, fluorescence X spectroscopy, UV-VISIBLE spectroscopy, optical microscopy and Fourier transform infrared spectroscopy (FTIR). The XRD
patterns show that the xerogel of TiO2 are amorphous, and they transform into the anatase phase from 350°C, and we notice the appearance of the phase brookite after 400°C. In the case of the sample obtained with 400°C and 10 steepings , we
observe the appearance of the phase rutile , normally this one must appear with
800°C. The crystallite size of TiO2 thin films is increased with increasing
calcination temperature. The color of the thin layers obtained varies according to
the temperature of annealing and of the number of steeping. The thickness varies
between 20–285nm. The thermal analysis of the powder shows that the
crystallization of TiO2 is from 400°C. The thin layers of TiO2 are transparent in the
visible and opaque in UV, and this some are the temperature of annealing and the
number of steeping. The increase in the number of steeping returns the layers
opaque, what minimizes their transmission.Diplôme : Magistère En ligne : ../theses/physique/ADN4465.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3597 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ADN/4465 ADN/4465 Thèse Bibliothèque principale Thèses Disponible
Titre : Caractéristiques thermiques des parois des bâtiments et amélioration de l'isolation Type de document : texte imprimé Auteurs : Nassima Sotehi ; Abla Chaker, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2010 Importance : 153 f. Note générale : 01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Transfert de chaleur et de masse Polystyrène Isolation thermique Béton allégé Liège Propriétés thermophysiques Méthode des boites thermal insulation lightweight concrete thermal properties cork polystyrene thermophysical properties boxes method heat and mass transfer ????? ??????? ?????? ????? ???? ???????????? ????? ???????????? ????? ????? ?????? ??????? ? ??????? Index. décimale : 530 Physique Résumé : Optimizing energy consumption is one of the building designers concerns. This explains the technology assessment and development of new building materials. Among these materials lightweight concrete, which can be play a role as an insulator, while maintaining adequate levels of performance.
The knowledge of the materials thermal properties used for building shielding such as thermal conductivity, thermal resistance and heat mass are the most important features for the choice of a thermal insulation material This work is a contribution to the study of cork lightweight and polystyrene lightweight concretes thermal behaviour. These materials are intended to be used for roof insulation and other building components and there lightness makes them an interesting technical
solution for the building tower.
Regarding the experimental measurements, in steady regime for the thermal conductivity, we have used the “Boxes method”. Thermal resistance and mass heat are obtained by calculation.
The experimental results made it possible to specify the effect of the water content, the materials density and the fibres dosage on the materials thermophysical properties.
The mathematical modelling of coupled heat and mass transfer occurring within building walls is obtained with using Luikov's model. The differential equations obtained are discredited by the finite element method.
The obtained results illustrate the temporal evolutions of the temperature and the moisture
content, and the distributions of the temperature and moisture content inside the wall for several periods of time. They allow us to specify the effect of the nature and fibre dosage on the heat and mass transfer.Diplôme : Doctorat en sciences En ligne : ../theses/physique/SOT5778.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3550 Caractéristiques thermiques des parois des bâtiments et amélioration de l'isolation [texte imprimé] / Nassima Sotehi ; Abla Chaker, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2010 . - 153 f.
01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Transfert de chaleur et de masse Polystyrène Isolation thermique Béton allégé Liège Propriétés thermophysiques Méthode des boites thermal insulation lightweight concrete thermal properties cork polystyrene thermophysical properties boxes method heat and mass transfer ????? ??????? ?????? ????? ???? ???????????? ????? ???????????? ????? ????? ?????? ??????? ? ??????? Index. décimale : 530 Physique Résumé : Optimizing energy consumption is one of the building designers concerns. This explains the technology assessment and development of new building materials. Among these materials lightweight concrete, which can be play a role as an insulator, while maintaining adequate levels of performance.
The knowledge of the materials thermal properties used for building shielding such as thermal conductivity, thermal resistance and heat mass are the most important features for the choice of a thermal insulation material This work is a contribution to the study of cork lightweight and polystyrene lightweight concretes thermal behaviour. These materials are intended to be used for roof insulation and other building components and there lightness makes them an interesting technical
solution for the building tower.
Regarding the experimental measurements, in steady regime for the thermal conductivity, we have used the “Boxes method”. Thermal resistance and mass heat are obtained by calculation.
The experimental results made it possible to specify the effect of the water content, the materials density and the fibres dosage on the materials thermophysical properties.
The mathematical modelling of coupled heat and mass transfer occurring within building walls is obtained with using Luikov's model. The differential equations obtained are discredited by the finite element method.
The obtained results illustrate the temporal evolutions of the temperature and the moisture
content, and the distributions of the temperature and moisture content inside the wall for several periods of time. They allow us to specify the effect of the nature and fibre dosage on the heat and mass transfer.Diplôme : Doctorat en sciences En ligne : ../theses/physique/SOT5778.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3550 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SOT/5778 SOT/5778 Thèse Bibliothèque principale Thèses Disponible
Titre : Carbonatation de betons adjuvantes a base de ressources locales algeriennes Type de document : texte imprimé Auteurs : Fatima-Zohra Dakhmouche Chabil, Auteur ; Muzahim Al-Mukhtar, Directeur de thèse ; Hocine Chabil, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2009 Autre Editeur : Orléans : l’université d’Orléans Importance : 240 f. Format : 31 cm Note générale : Doctorat
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Génie CivilTags : carbonatation béton adjuvant pâte de ciment rhéologie porosité corrosion dioxyde de
carbone durabilité Génie CivilIndex. décimale : 624 Génie civil Diplôme : Doctorat En ligne : ../theses/gcivil/DAK5881.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5673 Carbonatation de betons adjuvantes a base de ressources locales algeriennes [texte imprimé] / Fatima-Zohra Dakhmouche Chabil, Auteur ; Muzahim Al-Mukhtar, Directeur de thèse ; Hocine Chabil, Directeur de thèse . - Constantine : Université Mentouri Constantine : Orléans : l’université d’Orléans, 2009 . - 240 f. ; 31 cm.
Doctorat
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie CivilTags : carbonatation béton adjuvant pâte de ciment rhéologie porosité corrosion dioxyde de
carbone durabilité Génie CivilIndex. décimale : 624 Génie civil Diplôme : Doctorat En ligne : ../theses/gcivil/DAK5881.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5673 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DAK/5881 DAK/5881 Thèse Bibliothèque principale Thèses Disponible Permalink
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