Résultat de la recherche
4 recherche sur le tag
'tolerance' 
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Interroger des sources externesCaractètes physiologiques et biochimiques de tolérance du blé dur (Triticum durum Desf.) au strss hydrique / Adra Mouellef
Titre : Caractètes physiologiques et biochimiques de tolérance du blé dur (Triticum durum Desf.) au strss hydrique Type de document : texte imprimé Auteurs : Adra Mouellef, Auteur ; Univ. de Constantine, Éditeur scientifique ; N. Ykhlef, Directeur de thèse Année de publication : 2010 Importance : 69 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
BiologieTags : Morphologie Blé dur Electrophorèse Culture in vitro SDS-PAGE Tolérance PEG Strss hydrique Water stress tolerance durum wheat morphology physiology and biochemistry in vitro culture SDS-PAGE electrophoresis الإجهاد المائي المقاومة القمح الصلب مرفولولوجيا فيزيولوجيا بيوكميا الزراعة في الأنابيب PEG 600 الهجرة الكهربائية SDS-PEGA Index. décimale : 570 Sciences de la vie. Biologie Résumé : The objective of this work is to study the effect of water stress, and variability of response in seven genotypes of durum wheat (Triticum durum Desf): Djenah khetaifa, Bidi 17, Guem goum Rkham, Rahouia, Beliouni, Vitron and Waha.
In the first part, we studied various morphological parameters, biochemical and physiological under five irrigation levels (100, 80, 50, 25 and 12.5% of field capacity); the choice of levels of irrigation is to apply at third leaf. The results show that water stress caused a reduction in leaf area, decreased water content, rate of water loss and the rate of total chlorophyll. Similarly, increased specific leaf weight, stomatal resistance and accumulation of prolin and soluble sugars are stored.
In the second part, were analyzed by SDS-PAGE total protein expressed in leaf and root the same genotypes after water stress applied in vitro by addition of PEG 600 to 7%. The electrophoresis diagrams, we give these subunits both in controls than in stress,while others are present or absent in stressed and witnesses.
In conclusion, the study showed that water stress causes the same response mechanisms among seven genotypes but to different degrees.Diplôme : Magistère En ligne : ../theses/biologie/MOU5728.pdf Permalink : index.php?lvl=notice_display&id=1829 Caractètes physiologiques et biochimiques de tolérance du blé dur (Triticum durum Desf.) au strss hydrique [texte imprimé] / Adra Mouellef, Auteur ; Univ. de Constantine, Éditeur scientifique ; N. Ykhlef, Directeur de thèse . - 2010 . - 69 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
BiologieTags : Morphologie Blé dur Electrophorèse Culture in vitro SDS-PAGE Tolérance PEG Strss hydrique Water stress tolerance durum wheat morphology physiology and biochemistry in vitro culture SDS-PAGE electrophoresis الإجهاد المائي المقاومة القمح الصلب مرفولولوجيا فيزيولوجيا بيوكميا الزراعة في الأنابيب PEG 600 الهجرة الكهربائية SDS-PEGA Index. décimale : 570 Sciences de la vie. Biologie Résumé : The objective of this work is to study the effect of water stress, and variability of response in seven genotypes of durum wheat (Triticum durum Desf): Djenah khetaifa, Bidi 17, Guem goum Rkham, Rahouia, Beliouni, Vitron and Waha.
In the first part, we studied various morphological parameters, biochemical and physiological under five irrigation levels (100, 80, 50, 25 and 12.5% of field capacity); the choice of levels of irrigation is to apply at third leaf. The results show that water stress caused a reduction in leaf area, decreased water content, rate of water loss and the rate of total chlorophyll. Similarly, increased specific leaf weight, stomatal resistance and accumulation of prolin and soluble sugars are stored.
In the second part, were analyzed by SDS-PAGE total protein expressed in leaf and root the same genotypes after water stress applied in vitro by addition of PEG 600 to 7%. The electrophoresis diagrams, we give these subunits both in controls than in stress,while others are present or absent in stressed and witnesses.
In conclusion, the study showed that water stress causes the same response mechanisms among seven genotypes but to different degrees.Diplôme : Magistère En ligne : ../theses/biologie/MOU5728.pdf Permalink : index.php?lvl=notice_display&id=1829 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MOU/5728 MOU/5728 Thèse Bibliothèque principale Thèses Disponible
Titre : Comportement des semis de Pin d'Alep sous contraintes thermiques. Type de document : texte imprimé Auteurs : Ahmed Laala, Auteur ; Djamel Alatou, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2009 Importance : 154 f. Format : 30 cm. 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
BiologieTags : Biologie Végétale:Ecophysiologie et biotechnologie végétale Chèorophylle Protéines Proline Sucres solubles Tolérance Résistance stomatique Pin d'Alep Stress thermique Aleppo pine thermal stress tolerance sugars chlorophyll proteins stomatic resistance شجرة الصنوبر
الحلبي الإجهاد الحراري التحمل البرولین السكریات القابلة للتحلل الكلوروفیل البروتینات المقاومة الثغریةIndex. décimale : 570 Sciences de la vie. Biologie Résumé : In Algeria, the pine forests are concentrated mainly in arid and semi arid regions where the climatic conditions limit the production potential seriously. Due to the unpredictable nature of thermal stress, tolerance is the most effective strategy in situations of severe and prolonged stress. At the time of this tolerance one attends modifications of structures or functions which increase the probability of being useful and production plants in these conditions.
In this study, seedlings of Aleppo pine are conducted according to two tests, first under semicontrolled conditions and under natural conditions. We fixed as objective to evaluate the effect of thermal stress from the biochemical markers such as the synthesis of proline, sugars, chlorophyll, proteins and to examine differences in these parameters between the organ (old needles and young shoots, stems and roots). The accumulation of various osmolytes under natural conditions showed that the sugars and proline, are much more concentrated in shoots (needles), stems and roots, but the winter period (hardness)and spring (active growth period) that give the greatest rate, the values of chlorophyll observed significant falls. The intensity of stress is positively correlated with proline, soluble sugars, and negatively with chlorophylls in winter and summer. At leaf level, high temperatures are manifested by a change in gas exchange following the closure of stomatal bands which may reflect an adaptation of the needles of Aleppo pine to heat stress. Thus, the biochemical parameters measured after the application of heat treatments also reflect a tolerance to low and high temperatures. These conditions have resulted in seedlings of Aleppo pine a reduction of chlorophyll content, an accumulation of osmoticums including proline and sugars as well as an increase in protein synthesis. Chlorophyll is negatively correlated with the other metabolites, which are correlated with each other. The results show that the concentrations of these compounds vary depending on the seedling organ and the severity of stress with thermal limits between -10 °C and 42 °C. On the morphological plan, growth of seedlings of Aleppo pine is greatly weakened by the winter conditions. However, the rate of recovery is improved during the spring season and reaches a maximum value during the summer season.
In conclusion, the study revealed the thermophilous character of seedlings of Aleppo pine and shows that these last used the same strategies of tolerance opposite to the thermal stress but the only difference is in the synthesis rates of the studied markers.Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/biologie/LaA5511.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=1805 Comportement des semis de Pin d'Alep sous contraintes thermiques. [texte imprimé] / Ahmed Laala, Auteur ; Djamel Alatou, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2009 . - 154 f. ; 30 cm.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Biologie Végétale:Ecophysiologie et biotechnologie végétale Chèorophylle Protéines Proline Sucres solubles Tolérance Résistance stomatique Pin d'Alep Stress thermique Aleppo pine thermal stress tolerance sugars chlorophyll proteins stomatic resistance شجرة الصنوبر
الحلبي الإجهاد الحراري التحمل البرولین السكریات القابلة للتحلل الكلوروفیل البروتینات المقاومة الثغریةIndex. décimale : 570 Sciences de la vie. Biologie Résumé : In Algeria, the pine forests are concentrated mainly in arid and semi arid regions where the climatic conditions limit the production potential seriously. Due to the unpredictable nature of thermal stress, tolerance is the most effective strategy in situations of severe and prolonged stress. At the time of this tolerance one attends modifications of structures or functions which increase the probability of being useful and production plants in these conditions.
In this study, seedlings of Aleppo pine are conducted according to two tests, first under semicontrolled conditions and under natural conditions. We fixed as objective to evaluate the effect of thermal stress from the biochemical markers such as the synthesis of proline, sugars, chlorophyll, proteins and to examine differences in these parameters between the organ (old needles and young shoots, stems and roots). The accumulation of various osmolytes under natural conditions showed that the sugars and proline, are much more concentrated in shoots (needles), stems and roots, but the winter period (hardness)and spring (active growth period) that give the greatest rate, the values of chlorophyll observed significant falls. The intensity of stress is positively correlated with proline, soluble sugars, and negatively with chlorophylls in winter and summer. At leaf level, high temperatures are manifested by a change in gas exchange following the closure of stomatal bands which may reflect an adaptation of the needles of Aleppo pine to heat stress. Thus, the biochemical parameters measured after the application of heat treatments also reflect a tolerance to low and high temperatures. These conditions have resulted in seedlings of Aleppo pine a reduction of chlorophyll content, an accumulation of osmoticums including proline and sugars as well as an increase in protein synthesis. Chlorophyll is negatively correlated with the other metabolites, which are correlated with each other. The results show that the concentrations of these compounds vary depending on the seedling organ and the severity of stress with thermal limits between -10 °C and 42 °C. On the morphological plan, growth of seedlings of Aleppo pine is greatly weakened by the winter conditions. However, the rate of recovery is improved during the spring season and reaches a maximum value during the summer season.
In conclusion, the study revealed the thermophilous character of seedlings of Aleppo pine and shows that these last used the same strategies of tolerance opposite to the thermal stress but the only difference is in the synthesis rates of the studied markers.Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/biologie/LaA5511.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=1805 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité LAA/5511 LAA/5511 Thèse Bibliothèque principale Thèses Disponible
Titre : Ajustement osmotique et maintien de l'activité photosynthétique chez le blé dur (Tricum durum, Desf.), en conditions de déficit hydrique Type de document : texte imprimé Auteurs : Univ. de Constantine, Éditeur scientifique Année de publication : 2002 Importance : 115 f. Note générale : 01 Disponible à la salle de recherche
02 Disponibles au magasin de la B.U.C.Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Blé dur Sucres Stress hydrique Proline Sélection Tolérance Ajustement osmotique Photosynthèse nette Index. décimale : 570 Sciences de la vie. Biologie Permalink : index.php?lvl=notice_display&id=1398 Ajustement osmotique et maintien de l'activité photosynthétique chez le blé dur (Tricum durum, Desf.), en conditions de déficit hydrique [texte imprimé] / Univ. de Constantine, Éditeur scientifique . - 2002 . - 115 f.
01 Disponible à la salle de recherche
02 Disponibles au magasin de la B.U.C.
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Blé dur Sucres Stress hydrique Proline Sélection Tolérance Ajustement osmotique Photosynthèse nette Index. décimale : 570 Sciences de la vie. Biologie Permalink : index.php?lvl=notice_display&id=1398 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité NOU/3744 NOU/3744 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude agro-écologiques du blé (triticum turgidum l.var.durum) dans les zones semi-arides utilisation des marqueurs moléculaires Type de document : texte imprimé Auteurs : Univ. de Constantine, Éditeur scientifique Année de publication : 2003 Importance : 88 f. Note générale : 1 Disponible dans la salle de recherche
1 Disponible au magasin de la bibliothèque centraleLangues : Français (fre) Catégories : Français - Anglais
BiologieTags : Rendement Environnement Blé dur Stress abiotique Agro-écologie Caractères morphologiques Caractéres physiologiques Radiométrie spectrale Marqueurs moléculaires Microsatellites SSR Tolérance Sécheresse Bassin méditerranéen Index. décimale : 570 Sciences de la vie. Biologie Permalink : index.php?lvl=notice_display&id=1417 Etude agro-écologiques du blé (triticum turgidum l.var.durum) dans les zones semi-arides utilisation des marqueurs moléculaires [texte imprimé] / Univ. de Constantine, Éditeur scientifique . - 2003 . - 88 f.
1 Disponible dans la salle de recherche
1 Disponible au magasin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Rendement Environnement Blé dur Stress abiotique Agro-écologie Caractères morphologiques Caractéres physiologiques Radiométrie spectrale Marqueurs moléculaires Microsatellites SSR Tolérance Sécheresse Bassin méditerranéen Index. décimale : 570 Sciences de la vie. Biologie Permalink : index.php?lvl=notice_display&id=1417 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité LAR/3924 LAR/3924 Thèse Bibliothèque principale Thèses Disponible
