Impact of Pretreatment on the Germinative Characters of Seeds of Stereospermum kunthianum Cham. (Bignonaceae) for Its Domestication in Chad  

作　　者：Beunon Tchimbi Sabre Idriss Absakine Anjha Grâce Mendi Hamza Ousmane Aziber Beunon Tchimbi;Sabre Idriss Absakine;Anjha Grâce Mendi;Hamza Ousmane Aziber(Department of Life and Earth Sciences, Higher Teachers’ Training College of N’Djamena, N’Djamena, Chad;Department of Plant Biology, Faculty of Sciences, University of Dschang, Dschang, Cameroon)

机构地区：[1]Department of Life and Earth Sciences, Higher Teachers’ Training College of N’Djamena, N’Djamena, Chad [2]Department of Plant Biology, Faculty of Sciences, University of Dschang, Dschang, Cameroon

出　　处：《Open Journal of Ecology》2023年第2期49-60,共12页生态学期刊（英文）

摘　　要：The objective of this research is to lift the dormancy of seeds of S. kunthianum in with a view to domesticating them. In this experiment, we used the soaking of seeds in sulfuric acid for different durations (10 min, 30 min and 1 h). The treated seeds were sown in transparent germinators. The explants obtained were then transplanted into pots containing five types of substrate (black earth, fine sand, sawdust, mixtures 1/1 of sawdust/black earth and 1/1 of sawdust/fine sand). This second test made it possible to determine the rate of germination on the substrate. The results obtained compared to those of the control showed a clear reduction in the latency time or germination time (62 hours) instead of 6 days (control), in the germination time 3 days/7 days (control) and a very high germination rate (100%). At the 5% threshold, soaking for 10 min and 30 min (100%) is the best result on the germination of S. kunthianum seeds. Soaking for 1 hour gives (7%) very low. After transplantation of the explants, the percentages obtained independently of the treatments show that the 1/1 mixtures of sawdust/black earth (75.19%), black earth (73.33%) and sawdust/fine sand (66.30%) have a higher performance than the others. The type of germination is epigeal. This work makes it possible to domesticate S. kunthianum in Chad.The objective of this research is to lift the dormancy of seeds of S. kunthianum in with a view to domesticating them. In this experiment, we used the soaking of seeds in sulfuric acid for different durations (10 min, 30 min and 1 h). The treated seeds were sown in transparent germinators. The explants obtained were then transplanted into pots containing five types of substrate (black earth, fine sand, sawdust, mixtures 1/1 of sawdust/black earth and 1/1 of sawdust/fine sand). This second test made it possible to determine the rate of germination on the substrate. The results obtained compared to those of the control showed a clear reduction in the latency time or germination time (62 hours) instead of 6 days (control), in the germination time 3 days/7 days (control) and a very high germination rate (100%). At the 5% threshold, soaking for 10 min and 30 min (100%) is the best result on the germination of S. kunthianum seeds. Soaking for 1 hour gives (7%) very low. After transplantation of the explants, the percentages obtained independently of the treatments show that the 1/1 mixtures of sawdust/black earth (75.19%), black earth (73.33%) and sawdust/fine sand (66.30%) have a higher performance than the others. The type of germination is epigeal. This work makes it possible to domesticate S. kunthianum in Chad.

关 键 词：Stereospermum kunthianum Treatment Substrate GERMINATION Medicinal Plant and Chad 

分 类 号：TQ5[化学工程]