The effect of intensity, duration and power of ultrasonic waves on rapeseed germination (Brassica napus L.) SLmo46 cultivar

N Amrae | Heshmat Omidi | A Mansouri

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=137510
Date :  2020/04/07
Publish in :    هفتمين کنگره زيست شناسي و علوم طبيعي ايران


Keywords :Keywords: ultrasonic waves, priming, total number of germinated seeds, canolal

Abstract :

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Seed priming involves very simple methods that can be effective in better germination and optimal seedling establishment. Among the biophysical and priming methods of seed, we can mention seed treatment by ultrasonic waves. This experiment was performed to investigate the effect of ultrasonic waves on rapeseed seed germination of SLmo46 cultivar. This experiment was performed as a factorial, in the form of a completely randomized baseline design with 4 replications in the 1397 crop year in the seed technology laboratory of the Faculty of Agriculture, Shahed University of Tehran. Test subjects included 60, 80, and 100 watts of power, ultrasonic waves of 40 and 59 Hz at 2, 4, 6, 8, and 20 minutes. Features included total germination, hard seed percentage, soft seed percentage, soft and crushed seed percentage and number of natural seedlings. The analysis of variance showed a significant effect of the intensity, strength and duration of treatment on all studied traits. The results of comparing the average intensity of ultrasonic waves, the power of the device and the time of application of the treatment showed that the highest number of germinated seeds in the intensity of 40 and 59 kHz in 100 watts of power of the device was obtained for 20 minutes. The waves increased by 59.18 and 54.54, respectively. This could be due to increased alpha-amylase enzyme activity, the hormone auxin and increased respiration in these seeds. The results of this study showed that priming with ultrasonic waves improvestheperformance of canola seeds.a