Asian Journal of Plant Sciences 1 ( 4 ): 499 - 501 , 2002
Abdul Majeed, Anjum Suhail, Arshed Makhdoom Sabir and Muhammad Yousuf
Journal of Biological Sciences 1 ( 3 ): 163 - 165 , 2001
Sohail Jamil Qureshi, Rizwana A. Qureshi, Muhammad Yousuf and M. Rizwan
Pakistan Journal of Biological Sciences 3 ( 12 ): 2033 - 2034 , 2000