Berner, P. M., R. N. Eckersall and R. K. Scott. 1963. The relative importance of embryo size and endosperm size in causing
		                                                                                        			                                                		the effects associated with seed size in wheat. J. Agric. Sci. 61:139-145.
		                                                                                        			                                                		Bonnett, O. T. and C. M. Woodwarth. 1931. A yield analysis of three varieties of barley. Amer. Soc. Agron. Jour. 23:311-
		                                                                                        			                                                		2327.
		                                                                                        			                                                		Castillo, A. G., J. G. Hampton and P. Coolbear. 1993. Influence of seed quality charecters on field emergence of garden peas
		                                                                                        			                                                		(Pisum sativum L.) under various sowing conditions. New Zealand J. Crop Hort. Sci. 21: 197-205.
		                                                                                        			                                                		Comish, P. S. and S. Hindmarsh. 1988. Seed size influences the coleoptile length of wheat. Aust. J. Exp. Agric. 28: 521-
		                                                                                        			                                                		523.
		                                                                                        			                                                		Dehghanshoar, M., A. Hamidi and S. Mobasser. 2005. Handbook of vigour test methods (in persian). Agricultural Training
		                                                                                        			                                                		Publication. 193PP.
		                                                                                        			                                                		Emam, Y. 2004. Cereal Production(Compiled and Edited). Shiraz University Press. 175pp.
		                                                                                        			                                                		Erickson, L. C. 1946. The effect of alfalfa seed size and depth of seeding upon the subsequent procurement on stand. J. Am.
		                                                                                        			                                                		Soc. Agron. 38:964-973.
		                                                                                        			                                                		Frey, K. J. and T. F. Huang. 1969. Relation of seed weight to grain yields in oats,) Avena sativa L.(Euphytica. 18:417-424.
		                                                                                        			                                                		Ghorbani, M. H., A. Soltani and S. Amiri. 2007. The effect of salinity and seed size on germination and seedling growth of
		                                                                                        			                                                		wheat. J. A. Sci. Nat. Res. 14:44-52.
		                                                                                        			                                                		Harper, J. L. and M. Obeid. 1967. Influence of seed size and depth of sowing on the establishment and growth of varieties of
		                                                                                        			                                                		fiber and oil seed flax. Crop Sci. 7:527-532.
		                                                                                        			                                                		Hasstrup , P. L., P. E. Jourgenson and I. Poulsen. 1993. Effect of seed vigour and dormancy on field emergence, development
		                                                                                        			                                                		and grain yield of winter wheat and winter barley.Seed Sci. Technol. 21:159-178.
		                                                                                        			                                                		 International Rules for Seed Testing (Edition2008). International Seed Testing Association(ISTA). Chapter 5: germination
		                                                                                        			                                                		test. P:1-57.
		                                                                                        			                                                		Khajehpour, M. R. 1994. The principles of agronomy. Isfahan University of Technology Press. 412PP.
		                                                                                        			                                                		Lafond, G.P. and R.J. Baker.1986. Effects of temperature, moisture stress, and seed size on germination of nine spring wheat
		                                                                                        			                                                		cultivars. Crop Sci. 26:563-567.
		                                                                                        			                                                		Madsen, E. and N. E. Langkilde. 1988. ISTA- Hand book for cleaning of agricultural and horticultural seeds on small- scale
		                                                                                        			                                                		Machines.Part2. International Seed Testing Association P. O. BOX 412, CH-8046 Zurich, Switzerland.
		                                                                                        			                                                		Mathur, P. N., N. C. Sinha, and R. P. Singh. 1982. Effect of seed size on germination and seed vigour in oat
		                                                                                        			                                                		(Avena sativa L.). Seed Res. 10:109-113.
		                                                                                        			                                                		Quisenberry, K. S. 1926. Correlated inheritance of quantitative characters and qualitative characters in oats. W. Va. Agric.
		                                                                                        			                                                		Exp. Stn. Bull. 202.
		                                                                                        			                                                		Roberts, E. H. and K. Osei-Bonsu. 1988.Seed and seedling vigour. pp.897-910.In: Summer field, R. J. (ed). World Crops:
		                                                                                        			                                                		Cool Season Food Legumes. Kluwer Academi Publishers, The Netherlands.
		                                                                                        			                                                		 
		                                                                                        			                                                		Roy, S. K. S., A. Hamid, M Giashuddin Miah and A. Hashem. 1996. Seed size variation and its effect on germination and
		                                                                                        			                                                		seedling vigour in rice. J. Agron. Crop Sci. 176: 79-82.
		                                                                                        			                                                		Sarmad Nia, G. H. 1996. Principles of seed science and technology(Translated). Mashhad Jahad University Press. 287PP.
		                                                                                        			                                                		Willenborg, C. J., J. C. Wildeman, A.K. Miller, G. Rossnagel and S.J. Shirtliffe. 2005. Oat germination characteristics
		                                                                                        			                                                		differ among genotypes, seed sizes and osmatic potentials. Crop Sci. 45:2023-2029