Effects of temperature and salinity on the seeds germination of Retama raetam (FORSSK.) Webb. scarified with sulfuric acid

Abstract

The present study consists of Retama raetam by the chemical scarification sulfuric acid (98 %) and the seeds' germinative behavior controlled conditions of temperature and salinity. scarification by the sulfuric acid were incapable of germinating germination capacities and speeds as well as the shortest latency times corresponded to temperatures (35 °C and 40 °C sensitive to salinity, when the N The threshold of tolerance was recorded inhibited. Published online: of the elimination of tegumentary inhibition affecting seeds of by the chemical scarification. This pretreatment was carried out the seeds' germinative behavior was studied in the laboratory under controlled conditions of temperature and salinity. The results reveal that the chemical scarification by the sulfuric acid during six hours, had favored the germination of seeds which ing. The thermal optimum of germination expressed by germination capacities and speeds as well as the shortest average times of germination and 20 °C and 25 °C. At low temperatures (0 °C °C), the germination was not possible.The seeds of when the NaCl concentration increases the rate of germination decreases was recorded at 272 mM, from which the germination ; chemical scarification; Creative Commons Attribution-NonCommercial 4.0 Research Associations category. GERMINATION SCARIFIED WITH SULFURIC ACID Aisset , Faculty of natural sciences and life, Laboratory of plant biodiversity: conservation and valorization, Sidi Bel Abbes, 22000, Algeria online: 01 Septemer 2017 the elimination of tegumentary inhibition affecting seeds of This pretreatment was carried out using pure in the laboratory under The results reveal that the chemical favored the germination of seeds which expressed by the highest times of germination and °C and 5 °C) and high The seeds of R. raetam are concentration increases the rate of germination decreases. at 272 mM, from which the germination was ; chemical scarification; germination; temperature; salinity.