The Effects of salinity stress on seed germination, seedling growth and proline content in Atriplex verrucifera

Document Type : Research Paper

Authors

Research Institute of Forests and Rangelands, P. O. Box: 13185- 116. Tehran, Iran.

Abstract

In this research, the effects of salinity stress on seed germination, seedling growth and proline content in Atriplex verrucifera were investigated. This species is native to Iran, and could be used as a forage for live stocks.
Plants were grown in 20 cm diameter pots in a growth chamber at 25 ± 2 °C and a 16 hour photoperiod. The experimental design was a completely randomized design with 4 replications of 5 treatments (0, 100, 200, 300 and 400 mM NaCl). Result showed that in this plant, increase of salt concentration caused delay in rate and decrease of germination. However, seedling phase, needs some salt.
In Atriplex verrucifera, treatments from 100 to 200 mM NaCl increased fresh and dry mass compared to the control, but greater salinities declined growth rate. Optimal fresh and dry mass prodution occurred at a salinity of 200 mM NaCl.


Keywords

References

1- اسدی، م.، 1380. فلور ایران. تیره اسفناج، چغندر ( Chenopodiaceae ) شمارة 38. انتشارات مؤسسه تحقیقات جنگلها و مراتع کشور.
2- Ayers, A.D. 1952. Seed germination as affected by soil moisture and salinity. Agron. 44: 82-84.
3- Bajji, M., Kinet, J.M., Lutts, S. 1998. Salt stress effects on roots and leaves of Atriplex halimus and their corresponding callus cultures. Plant science. 137: 131-142.
4- Bates, L.S., Waldran, R. P., Tear, I. D. 1973. Rapid determination of free proline for water studies. Plant siol. 39: 205-208
5- Dale, J.E. 1988. The control of leaf expansion. Annu. Rev. Plant. Physiol. 39: 267-295.
6- Davis, A. M. 1979. Forage quality of Kochia prostrata compared with three browse species. Agron. J. 71: 822-824.
7- Flowers, T.S., Torke, P.F. and Yeo, A.R. 1977. The mechanism of salt tolerance in halophytes. Plant physol. 28: 89-121.
8- Gale. J. 1970. Growth of Atriplex halimus L. in sodium chloride salinated cultured solution as effected by the relative humidity of the air. Aust. J.Biol.Sci. 23: 947-952.
9- Gul, B. and Weber, D.J. 1999. Effect of salinity, light and temperature on germination in Allenrolfeae occidentalis. Can. J. 77: 240-246.
10- Keiffer C. H., and Ungar I. A. 1997. The effect of extended exposure to hypersaline conditions on the germination of five inland halophyte species. Am: J. Botany. 84(1): 104-111
11- Khan, M.A., and Rizvi, Y. 1994. Effect of salinity, temperature and growth regulation and early seedling growth of Atriplex griffithii. Can. J. Bot. 72: 475-479
12- Khan, M.A. and Ungar, I.A. 1997. Effect of light, salinity and thermoperiod on the seed germination of halophytes. Can. J. Bot. 75: 835-841.
13- Lutts S., Majerus V., and Kinet J. M. 1999. NaCl effect on proline metabolism in rice seedlings. Physiol. Plant. 105: 450-458
14- Poljakoff, M.A. and Lerner, H.R. 1994. Plants in saline enviroments. pp: 65-96.
15- In: M. Pessarakli (ed). Handbook of Plant and Crop Stress. Marcel Dekker. Inc.
16- Sudhakar, P.R., Reddy, M.P. and Veeranjaneyulu, K. 1993. Effect of salt stress on the enzymes of proline synthesis and oxidation in Green gram seedling. J. Plant. Physiol. 141: 621-623
17- Ungar, I.A. 1996. Effect of salinity on seed germination, growth and ion accumulation of Atriplex patula. Am: J. Botany. 83(5): 604-607.
18- Zid, E. and Boukhris, M. 1997. Some aspects of the tolerance of Atriplex halimus (L.) to sodium chloride reproduction, growth and mineral composting. Ecologia planta. 12(4): 351-392.
Iranian Journal of Rangelands and Forests Plant Breeding and Genetic Research
Volume 12, Issue 2 - Serial Number 18
October 2005
Pages 419-432

Files

Share

How to cite

Statistics