1. Ahmed F F., Darwish, O. H., Gobara, A. A., & Ali, A. H. 2002. Physiological studies on the effect of ascorbic and citric acids in combined with some micronutrients on Flame seedless grapevine. Minia Journal Agricultural Research Development, 22(1), 105-114.
2. Alva O., Roa-Roco R N, Perez-Diaz R, Yañez M., Tapia J., Moreno Y., Gonzalez E. 2015. Pollen morphology and boron concentration in floral tissues as factors triggering natural and GA-induced parthenocarpic fruit development in grapevine. PloS one, 10(10), 0139503.
3. Broothaerts W, & Van Nerum I. 2002. Apple self-incompatibility genotypes: an overview. In XXVI International Horticultural Congress: Genetics and Breeding of Tree Fruits and Nuts 622 (pp. 379-387).
4. Dafni A., Hesse M., Pacini E. 2012. Pollen and pollination: Springer Science & Business Media.
5. De Wet, H. T., & Esme, R. (1988). The influence of temperature and boron on pollen germination in Mangifera indica L. South African Journal of Plant and Soil, 6(4), 228-234.
6. FAO STAT. (2012). Food and agriculture organization of the United Nations. FAO Statisticsdivision. http://faostat.fao.org/site/567.
7. Hegedűs,A,J., Lenart,J Halasz. (012. 'Sexual incompatibility in Rosaceae fruit tree species: molecular interactions and evolutionary dynamics', Biologia plantarum, 56: 201-09.
8. Iwai, H., Hokura, A., Oishi, M., Chida, H., Ishii, T., Sakai, S., Satoh, S. 2006. The gene responsible for borate cross-linking of pectin Rhamnogalacturonan-II is required for plant reproductive tissue development and fertilization. Proceedings of the National Academy of Sciences, 103(44), 16592-16597.
9. Lewis D H., (1980). Are there inter‐relations between the metabolic role of boron, synthesis of phenolic phytoalexins and the germination of pollen? New Phytologist, 84(2): 261-270.
10. Mularczyk-Oliwa M., Bombalska A., Kaliszewski M., Włodarski M., Kopczyński K., Kwaśny M., Trafny E. A. 2012. Comparison of fluorescence spectroscopy and FTIR in differentiation of plant pollens. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 97, 246-254.
11. Nyomora A M. S., Brown P H., Pinney K., & Polito, V S. 2000. Foliar application of boron to almond trees affects pollen quality. Journal of the American Society for Horticultural Science. 125(2): 265-270.
12. Pereira M. R., Ribeiro H., Cunha M., Abreu I. 2018. Comparison of pollen quality in Vitis vinifera L. cultivars. Scientia horticulturae, 227, 112-116.
13. Pilbeam D J., & Kirkby E. A. 1983. The physiology of boron in plants. Journal of Plant Nutrition, 6(7): 563-582.
14. Qin X. 1996. Foliar spray of B, Z and Mg and their effect on Fruit production and quality of jincheng orang. Journal of Southwest Agricultural University, 18(1): 40-45.
15. Radunić, M., Jazbec, A., Ercisli, S., Čmelik, Z., Ban, S. G. 2017. Pollen-pistil interaction influence on the fruit set of sweet cherry. Scientia horticulturae, 224, 358-366.
16. Rafeii S., & Pakkish, Z. 2014. Effect of Boric acid spray on growth and development of Camarosa’strawberry(Fragaria×ananassa Duch). International journal of Advanced Biological and Biomedical Research. 2(4): 1060-1063.
17. Ramirez F., Davenport T L. 2013. Apple pollination: a review. Scientia horticulturae, 162, 188-203.
18. Sakurai K., Brown S K., & Weeden N. 2000. Self-incompatibility alleles of apple cultivars and advanced selections. HortScience, 35(1), 116-119.
19. Sanzol J., and Herrero M. 2001. The Effective pollination period" in fruit trees. Scientia Horticulturae. 90(1): 1–17.
20. Shivanna K R., and Heslop-Harrison J. 1981. Membrane state and pollen viability. Annals of Botany. 47(6): 759-770.