Effect of drought stress and salicylic acid on morphological characteristics and essence yield of Dill (Anethum graveolens L.)

Subject Areas : Journal of Plant Ecophysiology

nader omidvar ¹ , mona dastori ² , abdolraza jafari ³

1 - گروه زراعت و اصلاح نباتات، واحد ارسنجان، دانشگاه آزاد اسلامی، ارسنجان، ایران
2 - گروه شناسایی و مبارزه با علف‌های هرز، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران
3 - گروه زیست شناسی، واحد ارسنجان، دانشگاه آزاد اسلامی، ارسنجان، ایران

Received: 2015-05-15 Accepted : 2015-05-15 Published : 2015-05-01

Keywords: Essence percentage, Salicylic Acid, Anethum graveolens, essence yield, shoot dry weight,

Abstract :

In order to evaluate of effect drought stress and salicylic acid on yield and growth parameters and essence of Dill (Anethum graveolens L.) a greenhouse experiment was conducted as factorial arrangement base on (CRD)with four replications in Saffashar city in 2011. The first factor consisted of three levels of drought stress (irrigation at field capacity during the growing period, drought stress medium with 2/3 field capacity in both vegetative and flowering stages and severe drought 1/3 field capacity at flowering stage) and the second factor consisted of four concentration of salicylic acid (0, 100, 200, and 300 mg of salicylic acid per liter). Results showed that maximum plant height, shoot dry weight and shot fresh weight can be related to irrigation treatments at field capacity. The lowest measured traits were among the different irrigation treatments on drought stress, with 1/3 field capacity at the flowering stage. Maximum percent ofessence was related to drought stress treatment on 1/3 field capacity at flowering stage and the highest essence yield were obtained to mild and severe drought stress (irrigation at 2/3 field capacity and 1/3 field capacity). Salicylic acid application results showed that the highest fresh and dry weight and essence and essence yield obtained in 300 mg per liter of salicylic acid, and the least was in control. The highest essence yield per hectare was obtained in 2/3 field capacity in both vegetative and flowering stages and the appropriate time could be achieved in both essence percent and essence yield.