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[This article belongs to Volume - 56, Issue - 02]

Abstract : A series of experiments were conducted on the seeds of the Crataegus oxyacantha shrub, which naturally grows in the Ain Brahim forest in West-Algerian. The aim was to determine how physical treatments such as warm and cold stratification, and chemical treatments such as scarification with sulphuric acid 98% for varying durations, could affect the double dormancy of the seeds (endocarp inhibition and embryonic dormancy). To test the effect of these treatments, the germination of the seeds was observed at temperatures of 20°C and 25°C in an oven. Results showed that chemical scarification using sulphuric acid for 30 to 60 minutes, combined with warm and cold stratification, significantly improved the germination capacity of the seeds compared to those not treated with sulphuric acid. The maximum germination capacities of 62 ± 5.38% and 57 ± 1.65% at 25°C and 20°C respectively were achieved through the use of these pre-treatments. The weakest germination capacities were observed in seeds that only underwent cold stratification without sulphuric acid treatment, with capacities of 24 ± 5.08% and 25 ± 0.86% at 20°C and 25°C respectively. Scarification was found to improve the velocity coefficient and shorten the time latency, but when the duration of scarification exceeded 60 minutes, it resulted in seed deterioration.