Effects of some plant growth regulators on physiological quality of Bromus aged seeds | ||
| تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران | ||
| Article 7, Volume 15, Issue 2 - Serial Number 28, August 2007, Pages 159-171 PDF (477.12 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijrfpbgr.2007.114961 | ||
| Authors | ||
| H.R. Eisvand* 1; H. Maddah Arefi2 | ||
| 1University of Tehran, Department of Agronomy and Plant Breeding | ||
| 2Research Institute of Forests and Rangelands, P.O. Box: 13185-116, Tehran, Iran | ||
| Abstract | ||
| The recovery of physiological quality of Bromus (Bromus inermis L.) aged seeds was evaluated, using cytokinin, auxin and gibberellin with 25, 50 and 100 ppm concentrations. Percentage of germination, rate of germination, length of radicle and plumule, seedling length and vigor index were decreased significantly by ageing. Auxin at 25 and 100 ppm increased germination percentage of aged seeds. All of plant growth regulators at same concentration showed different effects on germination percentage. Type of plant growth regulators had no significant effect on rate of germination, but increase in concentration of plant growth regulators, significantly decreased germination rate. Seed ageing inhibited growth of radicle more than plumula ones. Radicle seems to be one of susceptible structures to ageing in seed. Auxin somewhat recovered radicle growth of aged seed. Type of plant growth regulator did not affect radicle length, but plumule growth was promoted by cytokinin and gibberellin. In spit of decreasing Root/Shoot ratio in aged seeds, ageing had no significant effect on it, however, auxin increased this ratio in both aged and non-aged seeds. R/S decreased with increase in plant growth regulator concentration: Frequency of abnormal seedlings decreased by aging but dead seeds increased. | ||
| Keywords | ||
| Seed aging; Bromus inermis; plant growth regulators and physiological quality | ||
| References | ||
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- عبدی، ن.ا. و مداح عارفی، ح.، 1380. بررسی تنوع و روند زوال ژرم پلاسم گونه Bromus tomentellus موجود در بانک ژن منابع طبیعی. فصلنامه تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران، جلد 7؛ ص 25-2. - عیسوند، ح.ر. و مداح عارفی، ح.، 1383. بررسی چالشهای تولید بذر برخی گونههای جنسهایAegilops، Bromus و Onobrychis در بانک ژن منابع طبیعی ایران. خلاصه مقالات دوازدهمین کنفرانس سراسری زیست شناسی ایران، دانشگاه بوعلی سینا همدان، ص 353. - عیسوند، ح.ر. و علیزاده، م.ح.، 1382. بررسی برخی فاکتورهای کیفیت فیزیولوژیکی بذر(درصد جوانهزنی، سرعت جوانهزنی و شاخص بنیه) گیاه دارویی بادرشبو (Dracocephalum moldavica) تحت شرایط آزمون پیری زودرس. فصلنامه تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران، جلد 11، شماره 2؛ ص 256-249. - مظفریان، و.ا.، 1375. فرهنگ نامهای گیاهان ایران. انتشارات فرهنگ معاصر، تهران. - Abdul-baki, A.A. and Anderson, J.D., 1973. Vigor determination in soybean seed by multiplication. Crop Sci., 3: 630-633. - Agrawal, R.L., 2004. Seed technology. Oxford and IBH Publishing Co. LTD. New Delhi. - Ajouri, A., Asgedum H., and Becker, M., 2004. Seed priming enhances germination and seedling growth of barley under conditions of P and Zn deficiency. J. Plant Nutr. Soil Sci. 167: 630-636. - Arteca. N.R., 1995. Plant growth substances: principles and applications. Springer, 352 pages. - Bassiri, M., Wilson A.M., and Grami B., 1988. Dehydration effect on seedling development of four range species. J. Range Manage. 41: 383–386. - Bewley, J.D., 1997. Seed germination and dormancy. Plant Cell 9:1055-1066. - Bingham, I. J., Harris, A. and MacDonald, L., 1994. A comparative study of radicle and coleoptile extension in maize seedlings from aged and unaged seeds. Seed Science and Technology, 22, 127-139. - Copeland, L.D., and McDonald M.B., 1985. Principles of seed science and technology. New York. - Da Silva, E.A.A., Toorop, P.E., Nijsse, J., Bewley, J.D., and Hilhorst, H.W.M., 2005. Exogenous gibberellins inhibit coffee (Coffea arabica cv. Rubi) seed germination and cause cell death in the embryo. Journal of Experimental Botany, Vol. 56, No. 413, pp. 1029–1038. - Delouche J.C. and Baskin, C.C., 1973. Accelerated ageing technique for predicting relative storability of seed lots. Seed Science and Technology 1: 427-452. - FAO (Food and Agriculture Organization). 2003. Statistical data base. The state of Iran Agri-Food country profile. Rome. - Ferguson, J.M., Tekrony, D.M. and Egli, D.E., 1990. Changes during early seed and axes deterioration: 11. Lipids. Crop Science 30: 179-182. - Hardegree, S.P. and Van Vactor S.S., 2000. Germination and emergence of primed grass seeds under field and simulated-field temperature regimes. Annals of Botany 85: 379-390. - International Seed Testing Association. 1985. International rules for seed testing. Seed Sci. and Technol., 13, 299-355. - Iqbal, M., Ashraf M., Jamil A. and Rehman S., 2006. Dose seed priming induce changes in the levels of some endogenous plant hormones in hexaploid wheat plants under salt stress? Journal of Integrative Plant Biology, 48 (2): 181-189. - Kaur, S., Gupta K.A. and Kaur N., 1998. Gibberellic acid and kinetin partially reverse the effect of water stress on germination and seedling growth in chickpea. Plant Growth Regulation 25: 29–33, 1998. - Madan, S., Talwar, G.R., Behl, K. and Verma, U., 1989. Effect of accelerated ageing on germination, seedling vigour and beta-amylase activity in wheat. Research & Development Reporter 6: 48-54. - McDonald M.B., 1999. Seed deterioration: physiology, repair and assessment. Seed Science and Technology 27, 177-237. - Pandey, P.K., Goyal, R.D., Parakash, V., Katiyar, R.P. and Singh, C.B., 1990. Association between laboratory vigour tests and field emergence in cucurbits. Seed Research 18: 40-43. - Priestly, D.A., 1986. Seed aging. Cornell University Press. - Roohi, R. and Jameson D.A., 1991. The effect of hormone, dehulling and seedbed treatments on germination and adventititious root formation in blue grama. Journal of Range Management, 44(3): 237-241. - Senaratna, T., Gusse, J.F. and McKersie, B.D., 1988. Age-induced changes in cellular membranes of imbibed soybean seed axes. Physiologia Plantarum 73: 85-90. - Sivritepe, H.O., and Dourado A.M., 1995. The effect of priming treatments on viability and accumulation of chromosomal damage in aged pea seeds. Annals of Botany, 75:165-171. | ||
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