Shahrzad Tebyanian; Hamidreza Asgari; Farzaneh Bahadori; Mohammad Kia Kianian Golafshani; Maryam Shahbazi
Abstract
In order to investigate the effect of priming on populations of Salsola arbscula species, a factorial experiment was conducted in the form of a completely randomized design with 3 replications in the laboratory of the Research and Education Center for Agriculture and Natural Resources in Semnan Province. ...
Read More
In order to investigate the effect of priming on populations of Salsola arbscula species, a factorial experiment was conducted in the form of a completely randomized design with 3 replications in the laboratory of the Research and Education Center for Agriculture and Natural Resources in Semnan Province. This experiment was carried out at 7 levels including: control treatment (distilled water), sodium chloride and potassium nitrate priming (treatments of 50, 100 and 150 mM) on six populations of this salt grass and germination, seed germination and seedling growth was investigated. The results showed that population had a significant effect on all germination traits and priming showed significant effects on all traits except germination percentage. The interaction effect of population and priming was also significant on all traits. The greatest amount of population interaction in priming was in the characteristics of germination percentage, seed germination index and seed accumulation rate in genotype 104 in salt at 150 mM sodium chloride. The result of k-mean clustering showed that genotypes 104 and 234 were placed in cluster one, genotype 228 in cluster two, and genotypes 224, 230 and 223 in cluster three. The results of this study showed that priming with sodium chloride improves the germination characteristics of S. arbscula, and there is a significant difference between the investigated native genotypes in terms of response to salinity and priming, and this variation is in the way of dealing with desertification, restoration and development. The vegetation of pastures can be considered.
N. Zamani; P. Roshandel
Abstract
Salt tolerance of six halophytic species (Halocnemum strobilaceum, Halostachysbelangeriana, Salsola tomentosa, Salicornia europea, Halopeplis perfoliata,Salsola crassa) was evaluated at germination stage under NaCl conditions (0, 1, 2, 3, 4 and 5%). All seeds showed full germination in 1 and 2% NaCl, ...
Read More
Salt tolerance of six halophytic species (Halocnemum strobilaceum, Halostachysbelangeriana, Salsola tomentosa, Salicornia europea, Halopeplis perfoliata,Salsola crassa) was evaluated at germination stage under NaCl conditions (0, 1, 2, 3, 4 and 5%). All seeds showed full germination in 1 and 2% NaCl, comparable to germination in distilled water. By increasing the levels of NaCl, the differences between these species responses were evaluated. The second three species (from coastal zone of the salty lake Maharloo) were more tolerant compared to the first three species (from Gavkhooni deserts). Amongst, S. europea was the most tolerant species. At the second round of experiments and to test the effect of jasmonic acid (JA) on seed germination at high levels of salinity, the seeds were primed with JA (0, 0.01, 0.1, 1, 10 and 100µM) and then allowed to germinate in Petri-dishes containing different concentrations of NaCl: 3, 4 and 5% for Gavkhooni species and 4 and 5% for Maharloo species. Priming with 1 µM JA was the most effective to increase germination characters at high levels of salinity. By increasing the concentration of JA (from 10 to 100 µM) the inhibitory effects of JA on seed germination of the mentioned species was appeared.
