Effect of different dormancy breaking methods on germination characteristics of wild mustard seed (Sinapis arvensis L.)

An important step in weeds control are to identify the ecophysiological characteristics of the seeds of these plants. In order to investigate different methods of dormancy breaking of wild mustard seed (Sinapis arvensis L.) an experiment was conducted on a completely randomized design with three replications in 2019 in the Faculty of Agriculture and Natural Resources of Mohaghegh Ardabili University. Experimental treatments included control, chilling, placing in gibberellic acid solutions with four concentrations of 500, 1000, 1500 and 2000 parts per million for 24 hours, placing in concentrated sulfuric acid solution (98 Percent) for 1, 2 and 3 minutes and placing the seeds in ultrasonic for 10, 20 and 30 minutes. The results showed that the measured traits were affected by experimental treatments. Gibberellic acid 1500 parts per million (ppm) was measured at with the greatest effect on germination and growth components. Compared with the control treatment, gibberellic acid 1500 parts per million (ppm) increased 80 percent of wild mustard seed germination. However, in most of the studied traits, sulfuric acid had a negative effect on germination and growth components. The results suggest that despite the positive effect of gibberellic acid on germination of wild mustard seed, concentrated sulfuric acid has a detrimental effect on their and can be used as one of the methods for effective in controlling weeds.