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Effect of nitrogen sources on the growth and bioaccumualtion of nitrogen in <span style="font-size:14.0pt;line-height:115%;font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";color:black;mso-ansi-language:EN-IN; mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">marine red alga <i>Kappaphycus striatum </i>(Rhodophyta, Solieriaceae) in culture</span>

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Title Effect of nitrogen sources on the growth and bioaccumualtion of nitrogen in marine red alga Kappaphycus striatum (Rhodophyta, Solieriaceae) in culture
 
Creator Mairh, O P
Zodape, S T
Tewari, A
Mishra, J P
 
Description 55-59
Kappaphycus
striatum (Schmitz) Doty (=Eucheuma striatum Schmitz) was cultured in
the laboratory. The natural seawater -was supplimented with 1, 3, 5,
7 and 9 mg N l-1 from NaNO3, NH4NO3,
(NH4)2SO4 and urea separately. In these cultures
0.25 mg P l-1 as superphosphate and mironutrients were added except
in control. Effects of different concentrations of nitrogen from different
sources after 60 days showed significant increase in wet weight (at 1 % level)
in

cultures supplied
with 1 to 3 mg N l-1 from (NH4)2SO4
 and 3 to 5 mg N l-1 from NH4NO3.
However, (NH4)2SO4 was more effective than NH4NO3.
Maximum wet weight was obtained in 1 mg N l-1 from (NH4)2SO4
Percentage dry weight of the alga was maximum at 1 mg N l-1 supplied
from each of the nitrogen sources separately. Urea was found effective at
higher concentrations 5 to 9 mg N l-1. The bioaccumulation of total
nitrogen content of K. striatum increased with increasing concentration
of each of the nitrogen sources in the culture media. It was higher in the
plants supplied with NH4NO3or (NH4)2SO4
than those supplied with NaNO3 or in control. Bioaccumulation of
nitrogen in K. striatum in different treatments ranged from 0.57% to
4.99%. However, in cultures supplied with (NH4)2SO4,
the critical concentration of nitrogen varied

from 1.91 % to 2.53%, observed
at 1 to 3 mg N l-1 respectively. In the cultures supplied with (NH4)2SO4,
maximum growth and uptake of PO4-P and NH4-N was
observed.
 
Date 2014-01-14T16:09:06Z
2014-01-14T16:09:06Z
1999-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25626
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.28(1) [March 1999]