Evaluation of the effect of storage and different priming methods on germination traits on Halocnemum strobilaceum accessions exist in the Natural Resources Gene Bank of Iran

To evaluate the deterioration rate and effect of different priming methods on improving seed germination on different seed accessions of Halocnemum strobilaceum provided by Natural Resources Gene Bank of Iran, To evaluate the deterioration rate, a standard germination test was performed on 42 seed accessions with different origin and collection dates. To study effect of different priming methods, treatments included gibberellic acid (250 and 500 mg/l), polyethylene glycol (-0.6 and -1.2 MPa), potassium nitrate 19.78 mM, stratification at 4 °C for one month, NaCl 100 mM and Chilling were compared in 1645, 33515 and 43882 accessions That5, 9 and 17 years were stored in the refrigerator. The results showed that the average seed deterioration rate was 3.53 %/y of stored seeds at 4 °C.Each seed accession showed a different reaction to prime treatment. Results indicated germination percentage improved in the accession 1645 by treatment NaCl 100 mM, in the accession 33515 by treatment gibberellic acid 500 NaCl 100 mM, and in the accession 43882 by control treatment. However, no significant differences were observed between radicle and pedicle lengths among different treatments. From the results of this experiment, it can be concluded that priming treatments can only express the potential of the seed. Therefore, for collecting and storing seeds for a long time, the health and initial quality of seeds are very important.