S.M. Khasim; Department of Botany and Microbiology, Acharya Nagarjuna University, Guntur, India K. Thammasiri; Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, China S. Rama Rao; Department of Life Science, Sharda University, Greater Noida, Delhi, India M. Rahamtulla; Department of Botany and Microbiology, Acharya Nagarjuna University, Guntur, India