Interaction of water deficit stress and salicylic acid on yield and component yield of two cultivars wheat

Subject Areas : New Finding in Agriculture

Hamed Oghbaie ¹ (فارغ التحصیل کارشناس ارشد زراعت دانشگاه آزاد اسلامی واحد اراک)
Noor ali Sajedi ² (دانشگاه آزاد اسلامی، واحد اراک، گروه زراعت و اصلاح نباتات، اراک، ایران)
Hamid Madani ³ (دانشگاه آزاد اسلامی، واحد اراک، گروه زراعت و اصلاح نباتات، اراک، ایران)

Received: 2015-11-26 Accepted : 2015-11-26 Published : 2011-08-23

Keywords: Grain yield, Salicylic acid, Wheat, Water deficit stress,

Abstract :

This experiment was conducted in the research station of Islamic AzadUniversity- Arak Branch, Iranin 2009-2010. The experimental design was split plot factorial based onrandomized complete blocks design with four replications. The treatmentsincluding of water deficit stress in three levels: complete irrigation,cut-irrigation at milk stage and Cut-irrigation at dough stage in were assignedto main spilt and salicylic acid (without and with using equal to 1 Mm as seedpriming) and cultivars including of Alvand and Shahriar as factorial wererandomized to sub plot. Results showed that cut-irrigation at milk and dough stage reducedgrain yield by %24 and %15 respectively. Application ofsalicylic acid in complete irrigation, cut-irrigation at milk and dough stageincreased grain yield by 7.2, 7 and 8.7%. Effects threefold of treatmentsshowed that, highest grain yield equal 3698kg ha-1 obtained frominteraction of complete irrigation, with salicylic acid and Alvand cultivar,but  in condition of  cut-irrigation highest grain yield equal 3378kg ha-1 obtained from interaction of cut- irrigation at dough stage,with salicylic acid and shahriar cultivar. The results of experiment showedthat salicylic acid application may be decreased effects of water deficit.

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