Journal of Rangeland

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The objective of this study was to evaluate the effects of drought stress and seed priming with acid ascorbic on physiological traits of Taverniera cuneifolia. These treatments include priming with acid ascorbic in four levels (0, 50, 100 and 200 mM) for 24hours in four experimental replications and 30 seeds per replication.The treated seeds were grown in plastic pots in soil under greenhouse condition. All pots were irrigated with distilled water until the seed germination stage.Various irrigation periods of 3, 6, 9 and 12 days were used on seedlings over a 64 days,irrigated up to field capacity. Physiological traits of plants were measured.Duncan mean test was used to analyze the statistical differences between the treatments.Results showed that the performances of Taverniera cuneifolia traits were significantly decreased compared to the control (no priming with irrigation periods of 12 days). The lowest water potential and photosynthesis rate and highest water efficiency was observed in control treatment.
 

Keywords: Taverniera cuneifolia, Drought stress, Seed germination, Acid ascorbic, Physiological traits.

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