Keywords: emergence nutrition rainfed wheat seed protein seed vigor ABSTRACT Low germination and wheat seedling emergence problems are the most important difficulties under rainfed condition.Better and enough application of nitrogen in parent plants nutrition can play important role in production of seeds with high quality and vigor. The current research was conducted to evaluation the effects of different nitrogen rates in wheat cv. Azar2 parent plants on germination, seed vigor and seedling establishment. Laboratory tests were conducted as completely randomized design with five treatments including nitrogen fertilizer 0, 30, 60, 90 and 120 kg/ha in four replications and field experiment was carried out as randomized complete block design in three replications in 2013- 2014 growing season at Dryland Agricultural Research Institute (DARI) in Iran. All traits including viable seed percentage, electrical conductivity, germination rate and root, shoot and seedling dry weight, but viable seeds were significantly affected by different nitrogen fertilizer rates in wheat parent plants. Seedling emergence rate and seedling emergence percentage affected significantly by different nitrogen fertilizer rates in parent plants at 1 and %5 levels, respectively. Seedling emergence percentage and rate in 60, 90 and 120 kg/ha, were located at the same group. Therefore, application of 60 kg/ha nitrogen fertilizer in parent plants of wheat cv. Azar2 are recommended for production of vigorous seed and seedling establishment in the field.
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