Effects of Scarification and Temperature on Germination of Licorice (Glycyrrhiza glabra L.) Seeds | ||
| Journal of Agricultural Science and Technology | ||
| Article 3, Volume 2, Issue 4, 2000, Pages 257-262 PDF (230.09 K) | ||
| Authors | ||
| H. Ghadiri* 1; N. Bagherani Torshiz2 | ||
| 1Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran. | ||
| 2Agricultural Research Center, Gorgan, Islamic Republic of Iran. | ||
| Abstract | ||
| Laboratory experiments were performed to determine the effect of various scarification treatments at four temperature regimes on germination of licorice seeds . A randomized complete block design with four replications was used. Germination counts were made every day for 2 weeks. At 50C, none of the chemically and mechanically scarified and non scarified seeds germinated. At 15, 25, and 350C, mechanical scarification increased seed germination to 94-98%. However, at these temperatures, velocity of germination of mechanically scarified seeds were lowest among all treatments. Chemical scarification also increased germination percentage significantly to 90-95% with 45 min soaking. At 15 and 250C, seed germination percentage and velocity of germination increased as the soaking time in sulfuric acid increased from 5 to 30, 45, or 60 min. However, at 350C, there was no difference in germination percentage between soaking times of 5 and 60 min. It appears that soaking for 45 min provides full germination at 25 and 350C. | ||
| Keywords | ||
| Licorice dormancy; Weed biology; Weed seed germination | ||
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