Greener Journal of Biological Sciences

Open Access

Greener Journal of  Biological Sciences Vol. 2 (3), pp. 043-051November 2012

 © 2011 Greener Journals

Research Paper

Manuscript Number:110312207


Isolation and Characterization of Salinity Tolerant Azotobacter sp


Md. Shamim Akhter, Sheikh Julfikar Hossain, SK. Amir Hossain and Rakesh Kumar Datta


Ph D Research Fellow, Brain Protein Malfunction Lab., Dept. of Medicine, University of Santiago De Compostela, Spain. 
Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna, Bangladesh

Corresponding author’s Email: shamim11_akhter @


The Cycas circinalis was first officially introduced into Nigeria by the Nigerian Institute for Oil Palm Research (NIFOR), Benin City. It belongs to the Division: Cycadophyta, Class: Cycadopsida, Order Cycadales, family Cycadaceae and genera Cycas. It was first recognized as a separate species in 1995. It is also known as Sago palm, Fern palm, Cycad or Starch palm. The floral biology of the plant is cone like as other cones in the Order Cycadales, the cone has the whorl of premature pinnate fronds embedded within the cone. This cone opens up and spreads out as the inflorescence reaches anthesis revealing the whorl of young leaves that will form the new generation crown. 
The mean number of fully formed fruits per stalk is 9.0 average fruit length is 5.24cm, fruit circumference ranged from 8.6-9.6cm while the average circumference is 9.03. Fruit weight range between 19.2 – 22.10g (mean = 21.6g), the length of dehusked fruit vary from 4.1 – 5.0cm, while the circumference of the dehusked fruit range between 7.1 – 8.0cm. The average circumference of dehusked fruit was 7.53cm. The weight of the dehusked fruit range between 9.7 – 18.6g, with a mean weight of 13.9g.

Keywords: Cycas, Gymnospermous, Cone and Cycasin

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