1. Al-Zahim, M., Ford-Lloyd, B. and Newbury, H. 1999. Detection of Somaclonal Variation in Garlic (Allium sativum L.) Using RAPD and Cytological Analysis. Plant Cell Rep., 18: 473-477.
2. Azevedo, J. A. and Azevedo, R. A. 2006. Heavy Metals and Oxidative Stress: Where Do We Go from Here? Commun. Bio. Crop Sci., 1(2): 135-138.
3. Baker, A. J. M., Mcgrath, S. P., Sidoli, C. M. D. and Reeves, R.D. 1994. The Possibility of in Situ Heavy Metal Decontamination of Polluted soils using crops of metal-accumulating plants. Resour. Conserv. Recy. 11(1–4): 41-49.
4. Beard, J. 1967. Turfgrass: Science and Culture. Prentice-Hall Inc., Englewood Cliffs. New Jersey, 658 PP.
5. Bouman, H. and De Klerk, G. J. 2001. Measurement of the Extent of Somaclonal Variation in Begonia Plants Regenerated under Various Conditions: Comparison of Three Assays. Theor. Appl. Genet., 102: 111–117.
6. Cheng, H., Xu, W., Zhao, J. L. Q., He, Y. and Chen, G. 2007. Application of Composted Sewage Sludge (CSS) as a Soil Amendment for Turfgrass Growth. Ecol. Eng., 29: 96-104.
7. Cunningham, S. D., Berti, W. R. and Huang, J. W. 1995. Phytoremediation of Contaminated Soils. Trend. Biotechnol., 13(9): 393-397.
8. Dellaporta. S. L., Wood, J. and Hicks, J. B. 1983. A Plant DNA Minipreparation. Plant Mol. Biol. Rep., 1:19- 21.
9. Fourre, J. L., Berger, P., Niquet, L. and Andre, P. 1997. Somatic Embryogenesis and Somaclonal Variation in Norway Spruce: Morphogenetic, Cytogenetic and Molecular Approaches. Theor. Appl. Genet., 94: 159–169.
10. Ghosh, M. and Singh, S. P. 2005. A Review on Phytoremediation of Heavy Metals and Utilization of Its Byproducts. Appl. Ecol. Environ. Res., 3(1): 1-8.
11. Guadagnini, M. 2000. In vitro-breeding for Metal Accumulation in Two Tobacco (Nicotiana tabacum) Cultivars. Thesis No. 1288, University Freiburg, Switzerland. 99.
12. Hinchman, R. R., Negri, M. C. and Gatliff, E. G. 1996. Phytoremediation: Using Green Plants to Clean up Contaminated Soil, Groundwater and Wastewater. Appl. Natu. Sci., Inc., Argonne National Laboratory Hinchman. http://www.treemediation.com/Technical/Phytoremediation_1998.pdf.
13. Homhuan, S., Kijwijan, B., Wangsomnuk, P., Bodhipadma, K. and Leungc, D. W. M. 2008. Variation of Plants Derived from Indirect Somatic Embryogenesis in Cotyledon Explants of Papaya. Sci. Asia, 34: 347-352.
14. Jain, R. K., Sharma, D. R. and Chowdhury, J. B. 1989. High Frequency Regeneration and Heritable Somaclonal Variation in Brassica juncea. Euphytica, 40: 75–81.
15. Jones, L. H. P., Jarvis, S. C. and Cowling, D. W. 1973. Lead Uptake from Soils by Perennial Ryegrass and Its Relation to the Supply of an Essential Element (Sulfur). Plant Soil, 38: 605-619.
16. Kaeppler, S. M., Kaeppler, H. F. and Rhee, Y. 2000. Epigenetic Aspects of Somaclonal Variation in Plants. Plant Mol. Biol., 43: 179-188.
17. Kramer, U. 2005. Phytoremediation: Novel Approaches to Cleaning Up Polluted Soils. Curr. Opin. Biotech., 16: 133-141.
18. Larkin, P. J. and Scowcroft, W. R. 1981. Somaclonal Variation: A Novel Source of Variability from Cell Cultures for Plant Improvement. Theor. App. Genet., 60: 197–214.
19. Li, L. and Qu, R. 2004. Development of Highly Regenerable Callus Lines and Biolistic Transformation of Turf-type Common Bermuda Grass [Cynodon dactylon (L.) Pers.]. Plant Cell. Rep., 22: 403-407.
20. Lu, S., Peng, X., Guo, Z., Zhang, G., Fan, Z., Pang, C., Wang, C. and Wang, J. 2007. In vitro Selection of Salinity Tolerant Varieties from Triploid Bermuda Grass (Cynodon transvaalensis×C. dactylon) and Their Physiological Responses to Salt and Drought Stress. Plant Cell Rep., 26: 1413-1420.
21. Mcgrath, S. P. and Zhao, F. J. 2003. Phytoextraction of Metals and Metalloids from Contaminated Soils. Curr. Opin. Biotech., 14: 277-282.
22. Mohajer, S. and Taha, R. M. 2014. Observations on the Cytology and Karyogram of an Onobrychis viciifolia Scop. New Variety in Callus, In vivo and In vitro Cultures. J. Agr. Sci. Tech., 16: 1683-1698.
23. Munthali, M. T., Newbury, H. J. and Ford-Lloyd B. V. 1996. The Detection of Somaclonal Varieties of Beet Using RAPD. Plant Cell Rep., 15: 474– 478.
24. Nehnevajova, E., Herzig, R., Erismann, K. H. and Schwitzguébel, J. P. 2007. In vitro Breeding of Brassica juncea L. to Enhance Metal Accumulation and Extraction Properties. Plant Cell Rep., 26(4): 429-37.
25. Olhoft, P. M. and Phillips, R. L. 1999. Genetic and Epigenetic Instability in Tissue Culture and Regenerated Progenies. In: “Plant Responses to Environmental Stresses: From Phytohormones to Genome Reorganization”, (Ed.): Lerner, H. R. Marcel Dekker, New York, PP. 111-148.
26. Roholf, F. J. 1998. NTSYS-pc Numerical Taxonomy and Multivariate Analysis System. Version 2.0 Exeter software Ltd, New York.
27. Qu, R. L., Li, D. R. and Qu, R. 2003. Lead Uptake by Roots of Four Turfgrass Species in Hydroponic Cultures. Hort. Sci., 38: 623-6290.
28. Rout, G. R., Samantarayb, S. and Das, P. 1999. In vitro Selection and Biochemical Characterization of Zinc and Manganese Adapted Callus Lines in Brassica spp. Plant Sci., 146(2): 89-100.
29. Sabir, A., Newbury, H. J., Todd, G., Catty, J. and Ford-Lloyd, B. V. 1992. Determination of Genetic Stability Using Isozymes and RFLP’s in Beet Plants Regenerated In vitro. Theo. App. Genet., 84: 113–117.
30. Salehi, H. and Khush-Khui, M. 2005. Effects of Genotype and Plant Growth Regulator on Callus Induction and Plant Regeneration in Four Important Turfgrass Genera: A Comparative Study. In Vitro Cell Dev. Pl., 41: 157-161.
31. Skirvin, R. M., Mcpheeters, K. D. and Norton, M. 1994. Sources and Frequency of Somaclonal Variation. Hort. Sci., 29: 1232-1237.
32. Spirochova1I., Puncocharova, J., Kafka, Z., Kubal, M., Soudek, P. and Vanek, T. 2003. Study of Accumulation of Heavy Metals by In vitro Cultures of Plants. Water Air Soil Poll., 3: 269- 276.
33. Tafvizi, F., Farahanei, F., Sheidai, M. and Nejadsattari, T. 2009. Effects of Zeatin and Activated Charcoal in Proliferation of Shoots and Direct Regeneration in Cotton (Gossypium hirsutum L.). Afr. J. Biotech., 8(22): 6220-6227.
34. Taghizadeh, M., Kafi, M., Fattahi Moghaddam, M. and Savaghebi, G. 2011. Effects of Lead Concentrations on Seed Germination of Turfgrass Genus and Its Potential for Phytoremediation. Iran. J. Hort. Sci., 42: 3.
35. Tian, T., Ali, B., Qin, Y., Malik, Z., Gill, R. A., Ali, S. and Zhou, W. 2014. Alleviation of Lead Toxicity by 5-Aminolevulinic Acid Is Related to Elevated Growth, Photosynthesis and Suppressed Ultrastructural Damages in Oilseed Rape. Bio. Med. Res. Inter., 530642: 11.
36. Yoon, J., Cao, X., Zhou, Q. and Ma, Q. 2006. Accumulation of Pb, Cu and Zn in Native Plants Growing on a Aontaminated Florida Site. Sci. Total Environ., 368: 456-464.
37. Zambrano, A. Y., Demey, J. R. and Gonzalez, V. 2003. In vitro Selection of a Glyphosate-tolerant Sugarcane Cellular Line. Plant Mol. Biol. Rep., 21: 365–373.