- A1-Hakimi, A. and Hamada, A. M. (2001). Bio/. Plant., 44: 253 - 261.
- A1paslan, M. and Gunes, A. (2001). Plant Soil. 236:123 - 128.
- Gunes, A. Ali, I. Mehmet, A. etal (2005). Arch. Agra Soil Sci., 51:687-695.
- Klessig, D.F. and Malamy, J. (1994). Plant Mo/. BioI., 26:1439 - 1458.
- Mishra, A. and Choudhuri, M.A. (1999). Bio/. Plant., 42:409 - 415.
- Pandey, V. and Agarwal, S. (2002). India J. Plant Physiol., 1:179-182.
- Raskin, I. (1992). Ann. Rev. Plant. Physio/' Mol. Bio/., 43:439 - 463.
- Senaratna, T. et al (2000). Plant Growth Reg., 30:57 - 161.
- Shakirova, F. M. et al (2003). Plant Sci., 164: 317 - 322.