The purpose of this research was to search for optimized priming conditions for improving perilla(Perilla ocymoides L.) seed performance, and effect of seed priming on germination under adverse environmental conditions such osmotic, salt, and ABA stre...
The purpose of this research was to search for optimized priming conditions for improving perilla(Perilla ocymoides L.) seed performance, and effect of seed priming on germination under adverse environmental conditions such osmotic, salt, and ABA stress.
Among the nine different chemicals, at two concentrations each, Ca(NO3)2 at 200 mM resulted in the shortest days to 50% of the final germination percentage (T50). Seeds primed at 20℃ for 3 days germinated most rapidly at 25℃ temperature tested.
Air-drying for 3h at 30℃ and room temperature after priming maintained all the advantages achieved during priming treatment. However dried at 50℃ significantly reduced germination and beneficial effect were lost gained by priming.
Priming has improved the rate and uniformity of seed germination in perilla, especially under adverse environmental such osmotic, salt, and ABA stress. Germinability was decreased under the increased stress from osmotic, salt, and ABA. Under these increased stress, the germinability of primed seeds was higher and earlier than those of nonprimed seeds.