Effect of spraying sodium selenate, titanium dioxide and growth regulator on yield and some physiological traits of safflower under drought stress

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 400

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شناسه ملی سند علمی:

BIOCONF20_731

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

In order to study the effect of sodium selenate, titanium dioxide and growth regulator (Hamon Green®) on yield and some physiological characteristics of safflower of Goldasht cultivar under drought stress, a split-plot experiment was conducted in a randomized complete block design with three replications in the Agricultural Research Center of Zabol University (Zahak city) in 1395. The main factor included irrigation cut off levels based on the phenological stages of growth in three levels: I1=control (complete irrigation), I2= irrigation up to stage R2 (flowering) and I3= irrigation up to stage R1 (branching) and sub-factor including control treatment (non-spraying), sodium selenate (2 mM), titanium dioxide (0.03%), growth regulator (0.1 L). Characteristics such as proline, catalase, ascorbate, relative water content and grain yield were measured. With increasing drought stress, the amount of proline, catalase and ascorbate increased, but the amount of leaf relative water content and grain yield decreased.The highest amount of catalase enzyme is related to sodium selenate solution in severe drought stress. The highest amount of ascorbate obtained from I3 and nonspraying.Proline was shown to be the highest in severe drought stress in non-spraying and spray growth regulator. Lowest RWC was related to I3. Levels I1 and I2 had the same yield and without significant difference, but the level of I3 caused a further decrease and significant in grain yield.

نویسندگان

Roghayeh Hamidi Moghadam

Department of Agriculture, Faculty of Agriculture, University of Zabol

Alireza sirousMehr

Department of Agriculture, Faculty of Agriculture, University of Zabol

Ahmad Ghanbari

Department of Agriculture, Faculty of Agriculture, University of Zabol