Optimizing Germination: The Effect Of Temperature And Chemical Scarification On Acacia Saligna (labill.) Seeds

Résumé: Seed dormancy in plants can be caused by various factors, with the seed coat (tegument) being a significant barrier, especially in species like Acacia. Our study aims to find the optimal conditions for germination of Acacia saligna seeds, where these seeds were subjected to two periods of scarification with 96% concentrated sulfuric acid plus control which make three groups (the first group control, the second group 20 min, the last group 60 min of scarification) the seeds were then divided into two groups to germinate at two different temperatures: 15°C and 25°C. Germination was followed in lab for 20 days. Then we performed measurements of germination performance parameters (germination rate, vigor index, median germination time). Our results showed that the best germination rate and speed of Acacia saligna seeds was seed subject chemical scarification for 60 min and germinated at 15 ° C, whereas, the seeds that managed to germinate at 25 ° C showed greater root elongation. Finally, we were able to conclude that A. saligna prefers coolness for germination and higher temperatures for growth.

Publié dans la revue: Agropastoralis Scientia