| Titre : |
Obtention d'hdrides F1 issues du croisement Aegilops XBlé dur (Triticum durum Desf) : Amélioration à la tolérance à la sécheresse. |
| Type de document : |
texte imprimé |
| Auteurs : |
Fethia Zadri ép Boudchicha, Auteur ; Nadia Ykhlef, Directeur de thèse |
| Editeur : |
Constantine : Université Mentouri Constantine |
| Année de publication : |
2009 |
| Importance : |
110 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
Biologie
|
| Tags : |
Biologie Végétale et écologie: Génomique et Techniques avancées des Végétaux Aegilops tolérance à la sécheresse Blé dur Variabilité génétique Résistance à la sécheresse Croisement interspécifique Amélioration du blé Protéines de réserve durum wheat genetic variability drought tolerance interspecific crossing wheat improvement storage proteins القمح الصلب التباين الجيني تحمل الجهد المائي التصالب النصفي تحسين القمح |
| Index. décimale : |
570 Sciences de la vie. Biologie |
| Résumé : |
Wild related species of Aegilopsare very interesting for wheat breeding programs. They are source of economical useful traits, such as resistance to diseases and abiotic stress, especially resistance to drought, the main limiting factor of wheat production in Algeria. For this aim, three Aegilopsspecies (Aegilops geniculataRoth., Aegilops triuncialisL.andAegilops ventricosaTauch) were crossed with four varietiesof durum wheat Triticum durumDesf. (Montpellier, Waha, Oued Zenati and Vitron). Two hormonal treatments with 2, 4-D (100ppm) and GA3 (75 ppm),were applied respectively, before and after pollinisation to enhance embryo development. Embryos formed were cultured on B5medium, additionnated with Kinetine (0.25 mg/l) and AIB (1 mg/l). Results obtained show differences in crossing affinity between Aegilopsspeciesand durum wheatvarieties. Significant correlation coefficient (r =0.57) indicates the influence of studied parameters on the number of embryos formation. All embryos regenerated green plants having some characters ofAegilopsgenus, witch two achieved development until acclimatation phase. Two hybrid seeds were obtained without embryo rescue, witch the caryopsis are similaire to the female parentones(Aegilops). Electrophoretic diagrams of hybrids, obtained by SDS-PAGE revealed big similarities with those of females parents. Mobilities of each hybrid’s bands are similar to those of correspondent female parent. These results indicate that heritability in this case of interspecific crossing is maternal type.
|
| Note de contenu : |
Annexe. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/biologie/ZAD5469.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=1782 |
Obtention d'hdrides F1 issues du croisement Aegilops XBlé dur (Triticum durum Desf) : Amélioration à la tolérance à la sécheresse. [texte imprimé] / Fethia Zadri ép Boudchicha, Auteur ; Nadia Ykhlef, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2009 . - 110 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
Biologie
|
| Tags : |
Biologie Végétale et écologie: Génomique et Techniques avancées des Végétaux Aegilops tolérance à la sécheresse Blé dur Variabilité génétique Résistance à la sécheresse Croisement interspécifique Amélioration du blé Protéines de réserve durum wheat genetic variability drought tolerance interspecific crossing wheat improvement storage proteins القمح الصلب التباين الجيني تحمل الجهد المائي التصالب النصفي تحسين القمح |
| Index. décimale : |
570 Sciences de la vie. Biologie |
| Résumé : |
Wild related species of Aegilopsare very interesting for wheat breeding programs. They are source of economical useful traits, such as resistance to diseases and abiotic stress, especially resistance to drought, the main limiting factor of wheat production in Algeria. For this aim, three Aegilopsspecies (Aegilops geniculataRoth., Aegilops triuncialisL.andAegilops ventricosaTauch) were crossed with four varietiesof durum wheat Triticum durumDesf. (Montpellier, Waha, Oued Zenati and Vitron). Two hormonal treatments with 2, 4-D (100ppm) and GA3 (75 ppm),were applied respectively, before and after pollinisation to enhance embryo development. Embryos formed were cultured on B5medium, additionnated with Kinetine (0.25 mg/l) and AIB (1 mg/l). Results obtained show differences in crossing affinity between Aegilopsspeciesand durum wheatvarieties. Significant correlation coefficient (r =0.57) indicates the influence of studied parameters on the number of embryos formation. All embryos regenerated green plants having some characters ofAegilopsgenus, witch two achieved development until acclimatation phase. Two hybrid seeds were obtained without embryo rescue, witch the caryopsis are similaire to the female parentones(Aegilops). Electrophoretic diagrams of hybrids, obtained by SDS-PAGE revealed big similarities with those of females parents. Mobilities of each hybrid’s bands are similar to those of correspondent female parent. These results indicate that heritability in this case of interspecific crossing is maternal type.
|
| Note de contenu : |
Annexe. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/biologie/ZAD5469.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=1782 |
|
Obtention d'hdrides F1 issues du croisement Aegilops XBlé dur (Triticum durum Desf)
