Hassan Bayat - Department of Research Group of Drought and Climate Change, University of Birjand, Birjand, Iran
Ali Naseri Moghadam - Department of Horticultural Science, College of Agriculture, University of Birjand, Birjand, Iran
Mohamad Hossein Aminifard - Department of Horticultural Science, College of Agriculture, University of Birjand, Birjand, Iran
Farid Moradinezhad - Department of Horticultural Science, College of Agriculture, University of Birjand, Birjand, Iran

This study was aimed to investigate the interactive effects of drought (۹۰, ۷۰, ۵۰, and ۳۰% FC) and salinity (۰, ۲۰, ۴۰, and ۶۰ mМ NaCl) on flower quality, antioxidant activity and ion concentrations of Narcissus tazetta L. cv. Shahla. The results demonstrated that drought, salinity, and their interactions had adverse effects on reproductive parameters (flower diameter and flower duration) of N. tazetta except for the flower number. Both drought and salt stress decreased total chlorophyll content, and the lowest value was obtained from ۶۰ mM NaCl × ۳۰% FC treatment. In conclusion, the sensitivity of N. tazetta plant to salinity stress was more than drought, which was exacerbated by the simultaneous application of both stresses.

Flower diameter, Flower number, Total chlorophyll