Effects of sulfur fertilizer and Thiobacillus on physiological indices in two sesame varieties under drought stress and correlation between morphological and physiological traits

Subject Areas : Ecophysiology & Phytochemistry of Medicinal and Aromatic Plants

Mohammad Heydari ¹ , Mohammad Ali Esmaeili ² , Ayoub Heydarzadeh ³ , Mina Molaee ⁴

1 - دانشجوی دانشگاه کشاورزی ساری
2 - دانشیار / دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 - دانشجوی دکتری زراعت / دانشگاه علوم کشاورزی و منابع طبیعی ساری
4 - دانشجوی کارشناسی باغبانی / دانشگاه علوم کشاورزی و منابع طبیعی ساری

Received: 2016-03-24 Accepted : 2016-03-25 Published : 2015-04-21

Keywords: Drought stress, Growth indices, Biological fertilizer, Sesame, fertilizers,

Abstract :

Sesame is one of the oldest crops in the world that is commonly cultivated in arid and semi-arid due to high oil seeds (42-52 %). This study was conducted to investigate the effects of sulfur and biological fertilizers on physiological parameters of sesame at Sari Agriculture sciences and Natural Resources University in 2014 crop year. The experiment was conducted in a split factorial design based on randomized complete block design in three blocks. Where the main factor was irrigation treatments in four levels (normal irrigation, 110, 140 and 170 mm evaporation from pan) and sub-plots include sesame varieties (K1 and Oltan) and fertilizer treatment in four levels (control, sulfur, thiobacillus-biological and combined sulfur thiobacillus-biological) in factorial arrangement. The results showed that different levels of drought stress has a significant effect (p