Studying the effect of water deficit stress and Spermine and Spermidin hormones on yield and water use efficiency of potato hybrid 902375

عالی, فرهاد and برمکی, مرتضی and حسن پناه, داود Studying the effect of water deficit stress and Spermine and Spermidin hormones on yield and water use efficiency of potato hybrid 902375. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to study the effects of Spermine and Spermidin hormones on yield and water use efficiency potato hybrid 902375 under water deficit stress, an experiment was conducted at Ardabil Agricultural and Natural Resources Research Station in 2018 crop year. The experiment was conducted as a factorial with three-factor in three replications. Experimental factors were included water deficit stress in two levels (normal and 50% usable water), Spermine hormone in four levels (control (0), 5, 10 and 20 mmol/L) and Spermidin hormone in four levels (control (0), 5, 10 and 20 mmol/L). Means comparison showed that water deficit stress decreased yield and plant height. But, it increased water use efficiency. Also results showed that application of Spermine and Spermidin hormones due to the improvement of investigated traits. The highest of tuber yield was obtained at the combination of 5 mmol/L Spermine with 10 mmol/L Spermidin and the lowest of it was obtained in control.

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