Influence of seed pretreatments on growth and yield parameters of dill under salt stress

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Research Paper 01/07/2016
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Influence of seed pretreatments on growth and yield parameters of dill under salt stress

Kazem Ghassemi-Golezani, Neda Nikpour-Rashidabad, Mostafa Valizadeh, Saeideh Alizadeh- Salteh
J. Bio. Env. Sci.9( 1), 448-454, July 2016.
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An experiment was carried out in 2015 at the University of Tabriz, Iran, to evaluate the effects of different seed pre-treatments (Control, 1 mM GA3 and SA and polymer seed coating) on growth and yield parameters of dill (Anethum graveolens L.) under a non-saline and three saline (4, 8 and 12 dS/m NaCl) conditions. This experiment was arranged as factorial, based on RCB design with three replications. Means of plant height, shoot and root weight, plant biomass, umbrella number per plant, 1000 grain weight, grain yield and harvest index were statistically similar up to 8 dS/m NaCl salinities, but significantly decreased under 12 dS/m salinity. Seed polymer coating accelerated the deleterious effects of salinity and generally led to poor performance of plants under salt stress. However, most of the growth and yield parameters of dill were improved as a result of seed pretreatment by gibberellic acid (GA3) and salicylic acid (SA). The highest grain yield per plant and harvest index were recorded for plants from SA treated seeds, followed by those from GA3 treated seeds.


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