Effect of the chemical nature of the substrate on the parameters of the germination and growth of Astragalus armatus / Hadjer Allali

Public ISBD Titre : Effect of the chemical nature of the substrate on the parameters of the germination and growth of Astragalus armatus Type de document : texte manuscrit Auteurs : Hadjer Allali, Auteur ; Abdelrahmane Khacheba, Auteur ; Zohra Houyou, Directeur de thèse ; Farida Allal, Directeur de thèse Editeur : Laghouat : Université Amar Telidji - Département de biologie Année de publication : 2022 Importance : 39 p. Format : 30 cm. Accompagnement : 1 disque optique numérique (CD-ROM) Note générale : Option : Plant ecology and environnement (Écologie végétale et environnement ) Langues : Anglais Mots-clés : Astragalus armatus  Germination  Growth  CaCO3  NaCl  CaSO4 Résumé : The study presented in this master's report, aims to determine the substratum in which the seeds of Astragalus armatus germinate best. During 18 days, we monitored the germination rate; the median germination duration; the daily germination average; root length and stem length; the growth rate and the vigor index for seeds of the plant, sown in four substratum (distilled water, CaSO4, CaCO3 and NaCl), at different concentrations (T0= 0%; C1=5%; C2=10% and C3=15%). The results showed significant differences for the measured parameters (P <0.05).We observe a germination rate of 100% in (CaSO4 5 %); 75% in (CaCO3 5%); 42% in (NaCl 5%). Stems length were 45 mm in (CaSO4 5%); 40 mm in (CaCO3 5%).The rootlets length were 4 mm in (T0). The highest vigor index 0.5 is observed in (CaSO4 5%); the slowest root growth speed (<0.001cm/day) is marked in NaCl and the maximum stems growth speeds (>0.25cm/day) are observed in (0% distilled water and CaSO4 5 %). Principal Component Analysis demonstrated that germination of the seeds of Astragalus armatus is better in the gypsum substratum CaSO4 5%, where its growth showed also good results, then CaCO3 5%. However in NaCl the plant faces risks. note de thèses : Mémoire de master en sciences biologiques Effect of the chemical nature of the substrate on the parameters of the germination and growth of Astragalus armatus [texte manuscrit] / Hadjer Allali, Auteur ; Abdelrahmane Khacheba, Auteur ; Zohra Houyou, Directeur de thèse ; Farida Allal, Directeur de thèse . - Laghouat : Université Amar Telidji - Département de biologie, 2022 . - 39 p. ; 30 cm. + 1 disque optique numérique (CD-ROM). Option : Plant ecology and environnement (Écologie végétale et environnement ) Langues : Anglais Mots-clés : Astragalus armatus  Germination  Growth  CaCO3  NaCl  CaSO4 Résumé : The study presented in this master's report, aims to determine the substratum in which the seeds of Astragalus armatus germinate best. During 18 days, we monitored the germination rate; the median germination duration; the daily germination average; root length and stem length; the growth rate and the vigor index for seeds of the plant, sown in four substratum (distilled water, CaSO4, CaCO3 and NaCl), at different concentrations (T0= 0%; C1=5%; C2=10% and C3=15%). The results showed significant differences for the measured parameters (P <0.05).We observe a germination rate of 100% in (CaSO4 5 %); 75% in (CaCO3 5%); 42% in (NaCl 5%). Stems length were 45 mm in (CaSO4 5%); 40 mm in (CaCO3 5%).The rootlets length were 4 mm in (T0). The highest vigor index 0.5 is observed in (CaSO4 5%); the slowest root growth speed (<0.001cm/day) is marked in NaCl and the maximum stems growth speeds (>0.25cm/day) are observed in (0% distilled water and CaSO4 5 %). Principal Component Analysis demonstrated that germination of the seeds of Astragalus armatus is better in the gypsum substratum CaSO4 5%, where its growth showed also good results, then CaCO3 5%. However in NaCl the plant faces risks. note de thèses : Mémoire de master en sciences biologiques

Réservation

Réserver ce document

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
MB 04-140	MB 04-140	Thése	BIBLIOTHEQUE DE FACULTE DES SCIENCES	théses (sci)	Disponible

---

page 1/1