___

• Bassett, M. J. 1986. Breeding vegetable crops. Avi Publishing Company Inc., Westport, Conn., USA.
• Fehr, W. R, 1980. Artificial hybridization and self-pollination. In W. R. Fehr and H. H.
• Hadley (eds.), Hybridization of crop plants. American Society of Agronomy, Madison, Wis., USA.
• Fehr, W. R. 1987. Principles of cultivar development. Vol. 2. Crop species. Macmillan, New York, USA.
• Fehr, W. R., E. L. Fehr, H. J. Jessen, 1993. Principles of cultivar development. Volume 1: Theory and Technique. Iowa Sate University, Ames, Iowa, USA.
• George, R. A. T., 1985. Vegetable seed production. Longman Inc. New York, USA.
• Griffiths, A. J. F., J. H. Miller, D. T. Suzuki, R. C. Lewontin and W. M. Gelbart, 1993. An introduction to genetics analysis (Fith ed.).W. H. Freeman and Company, New York, USA.
• Güleryüz, M., 1982. Bahçe ziraatında büyütücü ve engelleyici maddelerin kullanılması ve önemi. Atatürk Üniv. Yayınları No: 599, Ziraat Fak. Yayınları No: 279, Erzurum.
• Jensen, N. F., 1988. Plant breeding methodology. A wiley-interscience publication John Wiley& Sons, New York, USA.
• Kalloo, 1988. Vegetable breeding. Volume I, CRC Press, Inc. Boca Raton, Florida, USA.
• Lersten, N. R. 1980. Reproduction and seed development. In W. R. Fehr and H. H. Hadley (eds.), Hybridization of crop plants. American Society of Agronomy, Madison, Wis., USA.
• Major, D. J. 1980. Environmental effects on flowering. In W. R. Fehr and H. H. Hadley (eds.), Hybridization of crop plants. American Society of Agronomy, Madison, Wis., USA.
• Swiader, J. M., G. W. Ware and J. P. McCollum, 1992. Producing vegetable crops. Interstate Publishers, Inc., Danville, Illinois, USA.
• Welsh, J. R., 1990. Fundamentals of plant genetics and breeding. Robert E. Krieger Publishing company, Malabar-Florida, USA.