Effect of sillicium priming on seed germination and initial growth of melon seedlings under salinity stress

Subject Areas : Agroecology Journal

Zakieh Azari ¹ , Mohammad Sadeqe Sadeqi ² , Hassan Bayat ³ , Hossein Arooie ⁴

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Received: 2014-05-24 Accepted : 2015-10-17 Published : 2014-07-23

Keywords: seedling vigor, Cucumis melo, Mesri cultuvar, sodium silicate, Si,

Abstract :

The main goal of current experiment was evaluation of the effects Si priming on germination characteristics of melon under salt stress. For this purpose, a factorial experiment based on completely randomized design was conducted with three levels of Si 0 as control, 1 and 2 mM and 3 levels of NaCl (0, 75 and 150 mM) with three replications. Measured traits were germination percentage and rate, mean germination time, radical and plumule length, radical to plumule ratio, radical and plumule fresh weight. The salinity of 150 mM decreased germination percentage and rate, radical and plumule length by 9, 35, 69 and 71X comparing to the control, respectively. Seed priming with Si of 1 mM increased germination rate, radical and plumule length by 20, 33 and 35% comparing to the control, respectively. Seeds treated with Si (1 mM) had the highest germination percentage and rate at 75 mM of NaCl. On the whole, seed priming with Si could improve germination characteristics and seedling growth of melon under salinity stress conditions.  

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