1- Acar I., and Eti S. 2007. Abscission of pistachio flowers and fruits as affected by different pollinators. Pakistan Journal of Biological Science, 10: 2920-2924.
2- Afshari H., Talaie A., Mohammadi Moghadam M., and Panahi B. 2008. Differences of elements in early splitting of pistachio nuts and the effect of phenolic compounds and gallic acid on rate. Journal of Horticultural Sciences, 23 (1): 10-17. (in Persian with English abstract).
3- Angelini R., Tisi A., Rea G., Chen M.M., Botta M., Federico R., and Cona A. 2008. Involvement of polyamine oxidase in wound healing. Plant Physiology, 146: 162–177.
4- Arias M., Carbonell J., and Agusti M. 2005. Endogenous free polyamines and their role in fruit set of low and high parthenocarpic ability citrus cultivars. Journal of Plant Physiology, 162, 845–853.
5- Davarynejad G.H., Azizi M., and Akheratee M. 2008. Effect of foliar nutrition on quality, quantity and of alternate bearing of Pistachio (Pistacia vera L.). Journal of Horticultural Science, 23 (2): 1-10. (in Persian with English abstract).
6- Desouky I., Haggag L., Abd el-migeed M., Kishk Y., and El-hady E. 2009. Effect of boron and calcium nutrients spary on fruit set, oil content and oil quality of some olive cultivers. World Journal of Agriculture Sciences, 5:180-185.
7- Enas A.M.A., Sarrwy S.M.A., and Hassan H.S.A. 2010. Improving Canino Apricot Trees Productivity by Foliar Spraying with Polyamines. Journal of Applied Sciences Research, 6(9): 1359-1365.
8- Fabbri A., Ferguson L., and Polito V.S. 1998. Crop load related deformity of developing Pistacia vera cv `Kerman' nuts. Scientia Horticulturae, 77: 219–234.
9- Ferguson L., Beede R.H., Freeman M.W., Haviland D.R., Holtz B.A., and Kallsen C.E. 2005. Pistachio Production Manual (4th ed.). Fruit and Nut Research and Information Center, University of California, Davis, California.
10- Ferry V., Rombaldi C., Silva J., Pegoraro C., Nora L., Antunes P., Girardi C., and Tibola C. 2008. Boron and calsium sprayed on ‘Fuyu’ persimmon tree prevents skin cracks, groove and browning of fruit during cold storage. Ciencia Rural, Santa Maria, 38:2146-2150.
11- Gastol M., and Domagla I. 2006. Effect of foliar sprays on potassium, magnesium and calcium distribution in fruit of the pear. Journal of Fruit and Ornamental Plant Research, 14:169-176.
12- Hashimoto K., and Kudla J. 2011. Calcium decoding mechanisms in plants. Biochimie, 93 (12), 2054–2059.
13- Hepler P.K., and Winship L.J. 2010. Calcium at the cell wall-cytoplast interface. Journal of Integrative Plant Biology, 52 (2): 147–160.
14- Khayyat M., Khanizadeh S., Tafazoli E., Rajaee S., Kholdebarin B., and Emam Y. 2011. Effects of different calcium forms on gas exchange activities, water usage and macronutrient uptake by strawberry plants under sodium chloride stress. Journal of Plant Nutrition, 34 (3): 427-435.
15- Khezri M., Talaie A., Javanshah A., and Hadavi F. 2010. Effect of exogenous application of free polyamines on physiological disorders and yield of‟Kaleh-Ghoochi‟ pistachio shoots (Pistacia vera L.). Scientia Horticulturae, 125: 270-276.
16- Liu J.H., Nada K., Pang X.M., Honda C., Kitashiba H., and Moriguchi T. 2006. Role of polyamines in peach fruit development and storage. Tree of Physiology, 26: 791-798.
17- Moschou P.N., Wu J., Cona A., Tavladoraki P., Angelini R., and Roubelakis-Angelakis K.A. 2012. The polyamines and their catabolic products are significant players in the turnover of nitrogenous molecules in plants. Journal of Experimental Botany, 63 (14): 5003–5015.
18- Russos P.A., Pontikis C.A., and Zoti M.A. 2004. The role of free polyamines in the alternate-bearing of pistachio (Pistacia vera cv. Pontikis). Trees, 18: 61–69.
19- Sajadian H., and Hokmabadi H. 2011. Investigation on effects of calcium nitrate, calcium sulfate (soil application) and calcium chelate as foliar spray on endocarp lesion disorder and some qualitative characteristics of pistachio nut cv. “Akbari” International Journal of Nuts and Related Sciences, 2(3): 23-28
20- Shuraki Y.D., and Sedgley M. 1996. Fruit development of Pistacia vera (Anacardiaceae) in relation to embryo abortion and abnormalities at maturity. Australian Journal of Botany, 44: 35–45.
21- Spann T.M., Beede R.H., and DeJong T.M. 2009. Contributions of short- and long-shoots to yield of ‘Kerman’ pistachio (Pistacia vera L.). Scientia Horticulturae, 121: 495–500.
22- Takahashi Y. 2016. The role of polyamines in plant disease resistance. Environmental Control in Biology, 54 (1): 17-21.
23- Talaie A., Khezri M., and Javanshah A. 2010.Effect of spray application of free polyamines on prevention of some physiological problems in pistachio, ‘Kalle-Ghoochi’ variety. Iranian Journal of Horticultural Science, 41 (4): 383-391. (in Persian with English abstract).