Evaluation of the effect of priming and salinity stress on germination components of sesame seeds (Sesamum indicum L.)

Heshmat Omidi | S Alipor | Z Moradian | K Ahmadi | R Bazmmkani

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=105971
Date :  2018/10/29
Publish in :    تحقيقات بذر- علوم و تکنولوژي بذر سابق

Link :  http://seedresearch.gorganiau.ac.ir/article_628329.html
Keywords :Evaluation, germination, characteristics, proline, content, sesame, plant, stress

Abstract :

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In order to study the effect of priming on germination and seedling growth of sesame under salinity stress, a factorial experiment was conducted in a completely randomized design in Seed Technology Laboratory of Shahed University in 2016. Factors included priming in three levels (GA3 250 ppm, GA3 500 ppm and potassium nitrate 0.4) and five levels of salinity (0, 3, 6, 9 and 12 dS/m) in three replicates. Measurement traits included percentage and germination rate, mean germination time, root and shoot length, seedling fresh and dry weight and relative water content. The results showed that priming treatments, salinity stress and their interaction effect on the studied traits had a significant effect. The results of mean interactions showed that the highest percentage and rate of germination were observed in 500 ppm gibberellic acid pretreatment with no salt stress. Salinity stress reduced seed germination traits, growth parameters and relative water content of sesame seed. Application of gibberellic acid and potassium nitrate pre-treatments improved germination and seedling growth of sesame seeds exposure to salinity stress.