Evaluation of the chemical and physical treatments on seed germination characteristics of Myagrum (Myagrum perfoliatum L)

Document Type : Research Paper


1 Assistant Professor in Crop Ecology, Department of Agronomy and Plant Breeding, Faculty of Agriculture and Engineering Science, Razi University, Kermanshah, Iran.

2 Razi University, Kermanshah


In order to recognize effects of chemical and mechanical treatments on some of the most important features of seed germination of Myagrum, an experiment was conducted based on completely randomized design with four replications at Razi University. The experiment treatments were distilled water (control), sulfuric acid (98% for 2, 3 and 4 minutes), potassium nitrate (3%for 3, 4 and 7 days), hydrogen peroxide (30% for 2, 3 and 4 minutes) and scarification with sandpaper and prechilling (for 1, 2 and 3 weeks). Germination percent, germination rate, length and dry weight of epicotyl, length and dry weight of radicle, seedling total dry weight and vigor index were evaluated for Myagrum seed. Results showed that the most germination percent was related to hydrogen peroxide treatment for3 minutes (91 %) and scarification with a chilling for 3 weeks (84 %) and the lowest germination percent was observed in sulfuric acid treatment. The results of treatment group comparisons also showed that using hydrogen peroxide had the greatest impact on seed germination of Myagrum. The most germination rate (4.5) and epicotyl dry weight (1.6 g) was observed in hydrogen peroxide for 3 minutes. The most epicotyl length (22.7 mm), radicle length (36.6 mm), radicle dry weight (1.1 g), seedling dry weight (2.5 gr) and vigor index (49.9) were related to seed scarification along with chilling for 3 weeks. Our results also indicted that application of sulfuric acid due to extreme damage onembryo leaded to death of Myagrum seed. It seems that lack of appropriate germination in Myagrum seed could be due to embryo physiological factors because all evaluated treatments had more impact on seed metabolic and harmonic processes.


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