Seed dormancy determination and breaking in three different ecotypes of Astragalus cyclophyllus

Document Type : Original Article

Abstract

To study the problems of the Astragalus seed germination, a factorial experiment includes ecotype and dormancy breaking was carried out in base of a completely randomized design with 3 replications. The first factor consisted of different ecotypes Samirom, Damavand, Zanjan and the second factor was seed dormancy breaking treatments in 10 levels (mechanical scarification plus chilling time with 10, 20 and 30 days prechilling at 4 °C, mechanical scarification and gibberellic acid at a concentration of 400 and 500 ppm for 48 hours, scarification with sulfuric acid 96% for 2 and 4 min, mechanical scarification and 2% potassium nitrate for 72 h, mechanical scarification and gibberellic acid 400 ppm for 48 h with 20 days prechilling and intact seeds as control. Results showed that the ecotypes were different significantly for all traits except root length. Interaction of seed dormancy breaking treatments and ecotype were significant for all traits. Damavand ecotypewas higher than the restdue to the high viability, total germination percentage, germination rate and seedling vigor index. Among the treatments, mechanical scarification+gibberellic acid 400 ppm had more effective for germination parameters. Based on the results it could be said that seed dormancy is physical, because of seed scarification treatments they were able to absorb water and germinate.

Keywords

References

 
Akbari, GH., A. Pir Baluti and M. Shahverdi. 2002. Investigation Effect of harvest different time on some qualitative specification particulars characteristics of soybean seeds. Abstracts of the Seventh Congress of Crop Science. Karaj. 50 pp
*Akram Qaderi, F., B. Kamkar and A. Soltani. 2008. Seed Science and Technology (Translation). University of Mashhad Press, Iran. 512 pp
*Arbabian, S., M. Moghanloo and A. Majd. 2009.  Investigation methods breaking seed dormancy in species Astragalusfridae Rech. J. of Biol. Sci 4(2): 45-50. (In Persian with English Abstract)
*Aliero, B. L. 2004. Effects of sulphuric acid, mechanical scarification and wet heat treatments on germination of seeds of African locuct been tree, Parkia biolobosa. Afr. J. of Biotech 3(3): 179-181
*Baskin, J. M. and C. C. Baskin. 2004. A classification system for seed dormancy. Seed Sci. Res. 14: 1–16
*Baskin, C. C and J. M. Baskin1998. Seeds ecology, Biogeography, Evolution of Dormancy and Germination. Academic Press. San Diego
*Eisvand, H. R., H. M. Arefiand R. Tavakol-Afshari 2006. Effects of various treatments on breaking seed dormancy of Astragalus siliquosus. Seed Sci. Tech 34(3): 747-752
*El-Dengawy, E. F. A. 2005. Promotion of seed germination and subsequent seedling growth of loaquat (Eriobotryajaponica) by moist-chilling GA3 applications. Scientia Hortic. 105: 331-342
*Hartmann, H. T., D. E. Kester, F. T. Davies, Jr. and R.L. Geneve. 1997. Plant Propagation: Principles and PracticesPrentice-Hall, Inc. Englewod Cliffs, New Jersey. Sixth edition
*Hartmann, H. T., D. E. Kester and F. T. Davies. 1990. Plant propagation principles and practices. Forth edition.  Prentic hall, New Jersey. 647 pp
*Ikic, I., M. Maricevic, S. Tomasovic, J. Gunjaca, Z.S.Atovic and H.S. Arcevic. 2012. The effect of germination temperature on seed dormancy in Croatian-grown winter wheats. Euphytica, 188:25-34
*International rules for seed testing. 2010. Published by the International Seed Testing Association. Zurich
*ISTA. 2006. International rules for seed testing. The International Seed Testing Association
*International Seed Testing Association. 2013. Guide to ISTA – Association overview, [Electronic] Basserdorf web
*Khayat Moghadam, M., F. Agah and R. Sadrabadie Haghighie. 2014. Effective methods of dormancy breaking and increase germination seed Astagalus cicer L. J. Seed Res4(2): 21-27
*Khoocheki, A. and  G. Azizi. 2005. Effect of different treatments on breaking dormancy of Teucrium polium. Iranian J. of Agri. Res. 3(1): 81-88. (in Persian with English abstract)
*Lock, J. M. and K. Simpson 1991. Legumes of West Asia, a checklist. Royal Botanic Gardens, Kew
*Massoumi, A. A. 1998.Astragalus in the old world. Check list. Research Institute of  Forests and  Rangelands. Tehran
*Maguire, J. D. 1962. Seed of germination-aid in selection and evaluation for seedling emergence and vigour. Aust. J. of  Crop Sci.  2: 176-177
*Nasiri, M. 1994. Factor affecting dormancy, germination, and seed development. Agricultural Research and Education Organization press. 63 pp
*Podlech, D. 1998. Phylogeny and progression of characters in Old World Astragali (Leguminosae)., In: Zhang A., Wu S. (Eds.) Floristic characteristicus and Diversity of east Asian Plants., China higher Education Press., Beijing. pp. 405-407
*Rehman, S. 2000. Effect of scarification, GA and chilling on the germination of golden-tree (Koelreuteria paniculata Laxm). Scientia Hortic. 85: 319-329
*Rohi, H. R., A. Sepehri and F. Karimi. 2012. Study of dormancy-breaking of Black cumin seeds (Nigella sativa L.). Annuals of Biol. Res 3(6): 2651-2655
*Sarmadniya, GH. H. 1996. Seed technology (translation to Persian). University Mashhad Press. 288 pp
*Shabani, GH., N. Niksirat, A. Ghalavand, KH. Azizi and A. Torknejad. 2002. Effects of pretreatment temperature and potassium nitrate on dormancy breaking seed (Medicago scutellata). Abstracts essay constant Agricultural Development Conference in Iran, Azad University of Varamin, Iran. 12 march: 136 pp
*Stout, D. 1998. Rapid and synchoronus germination of Cicer milkvetch seed following diurnal temperature priming. Crop Sci. 181: 263-266
*Zafarian, S. and S. A. Hoshmand. 2013. Investigation effect of time, measure and method the application of growth regulators benzyl aminoporin and gibberellic acid on dormancy of seeds (Kelussia odoratissima M.). J. of  Prod. and Proc. of Agri. and Hortic 8 (3): 165- 175
Iranian Journal of Seed Science and Technology
Volume 4, Issue 2 - Serial Number 8
December 2015
Pages 51-65

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