Evaluation of various temperatures on Quinoa plant seeds under salinity stress

Document Type : Research Paper


1 Former M. Sc. Student, Seed Science and Technology, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran

2 Professor, Department of Crop Science, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran

3 Assistant Professor, Seed and Plant Improvement Institute, Karaj, Iran

4 Assistant Professor, Abureyhan Campus, University of Tehran, Pakdasht, Iran


Quinoa (Chenepodium quinoa Willd) is a grain-like crop which has a high production potential in Iran. Due to its seeds high nutritional value, it is compared with milk by the FAO. In order to study the effects of temperatures on seed germination of Quinoa seeds under salinity stress conditions, an experiment was conducted in Seed Lab of the University of Tehran in Karaj. Temperatures regimes included 5, 10, 15, 20, 25, 30 and 35°C. At each temperature four salinity treatments (zero, -4, -8 and -12 bars) using NaCl were used.  Results showed that increasing salinity stress decreased significantly germination rate but did not affect germination percentage except in 35°C at -12 bar. Basal temperature (Tb) for Quinoa germination was increased in high salinity potentials, but ceiling temperature (Tc) decreased. The germination data indicated that high salinity resulted in the narrow germination temperature in Quinoa seed.


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