Effects of Seed Pre-treatment on Germination, Growth and Physiological Characteristics of Savory (Saturja hortensis L.) Seedling under Salinity Stress

Heshmat Omidi | M Mosavi | M Azizi

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=116914
Date :  2019/09/04
Publish in :    تحقيقات بذر- علوم و تکنولوژي بذر سابق

Link :  http://seedresearch.gorganiau.ac.ir/article_668143.html
Keywords :Potassium nitrate, Gibberellic acid, Radicle, Plumule, Chlorophyll1

Abstract :

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To evaluate the effect of seed priming on germination, growth and physiological characteristic of savory under salinity conditions, this experiment was conducted as a factorial in a completely randomized design (CRD) with four replications at Shahed University of Tehran. Experimental factors were included salinity at four levels (0, 40, 80 and 120 mM Potassium chloride) and four levels of priming treatment (control, hydropriming, gibberellic acid(500 ppm) and potassium nitrate (0.3 mg/lit)). The results showed that the interaction effect of priming and salinity was significant on germination percent, germination coefficient, mean germination time, radicle, plumule and seedling length, carotenoid and total chlorophyll. By increasing salinity level, reduced percent and coefficient germination in all of the treatments. Highest percent germination obtained in zero levels of salinity. By using potassium nitrate, percent germination increased 13 percent in compared with the control. Salinity had a negative effect on the seedling length and between all the treatments, highest mean of seedling length related to potassium nitrate so that using it caused at the level of 80 mM salinity. The growth of seedling length showed a 40 percent increase compared with the control. Carotenoid and total chlorophyll reduced too by increasing of salinity and the maximum amount of those obtained in zero levels of salinity that showed up a 26 percent increase in compared with control. In general, the result of this experiment showed that using potassium nitrate at the lowest level of salinity had the best effect on germination and growth characteristics.