Journal of Environmental Biology
pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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Abstract - Issue Jul 2007, 28 (3) Back
Growth of Avicennia marina and Ceriops decandra seedlings inoculated
with halophilic azotobacters
S. Ravikumar*1, K. Kathiresan2, S.Liakath Alikhan3, G. Prakash Williams4 and N. Anitha Anandha Gracelin5
1Department of Oceanography and coastal area studies,
2Centre of Advanced Study in Marine Biology,
3Department of Chemistry, Dr. Zakir Hussain College, Ilayangudi-630 702,
4Department of Microbial Technology,
5Division of Marine Microbiology and Medicine, Center for Marine Science and Technology,
(Received: September 06, 2005 ; Revised received: November 10, 2005 ; Accepted: January 17, 2006)
Abstract: Inoculation of azotobacter has significant positive effects on the growth characteristics and pigments in mangrove seedlings of Avicennia marina and Ceriops decandra. The bacterial inoculation significantly increased the root dry biomass at the maximum of 75.8% at 30 gl-1salinity in Ceriops decandra. But in Avicennia marina, the shoot dry biomass was increased significantly at the maximum of 56.12% at 30 gl-l salinity. In general, the Azotobacter beijerinkii improved the growth characteristics better in both species of mangroves preferably at higher salinity levels in A. marina and at a range of salinity in C. decandra. The results recommend this for raising vigorous seedlings under nursery conditions.
Key words: Avicennia marina, Azotobacters, Biofertilizers, Ceriops decandra, Mangroves, Salinity
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