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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (835) Last page : (842)
Article doi: : http://dx.doi.org/10.18782/2320-7005

Effect of Phosphate and Nitrate Supplement on Growth and Agar Quality in Gracilaria dura (C. Agardh, 1842) - In Vitro Culture

Kalpesh Fofandi¹*, Nilesh Joshi² and Upasana Vyas³

¹*PG Scholar, Department of Aquaculture, College of Fisheries Science, Veraval, Gujarat 362 265
²Associate professor, Department of Aquaculture, College of Fisheries Science, Veraval, Gujarat 362 265
³Ph.D. Scholar, Department of Fisheries Resource Management, College of Fisheries Science, Veraval, Gujarat
*Corresponding Author E-mail: kalpeshfofandi28@gmail.com
Received: 2.09.2018 | Revised: 29.09.2018 | Accepted: 6.10.2018  

 ABSTRACT

The present study on growth performance of Gracilaria dura were conducted at Veraval from December 2017 to March 2018. The different concentration of nitrate and phosphate content were given to check the effect on growth, agar quality and Daily Growth Rate (DGR). Initially 200 g of G. Dura ware planted in culture tank of 5 litre capacity in 4 replication Growth and Physico chemical parameters were measured at every 30 days interval, final harvest was done at the end of 120 days. Highest mean growth was observed in treatment T-8 (2 ppm Phosphate and 2 ppm Nitrate) 709.25 ± 9.70 g FW; while, lowest (538.75 ± 7.13) in control condition. Weights of Gracilaria were found significant with increase in time period from 0 to 120 days at interval of 30 days. DGR % has been observed highest (0.651 %) in treatment - 8 at 60 days, while lowest (0.207 %) in control. Estimation of agar agar during that culture period  (120 days) at an interval of 30 days show the range of 23.33 ± 1.38 to 34.52 ± 1.28.

Key words: Gracilaria dura, Seaweed culture, Growth rate, Agar, Gel strength.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Fofandi, K., Joshi, N. and Vyas, U., Effect of Phosphate and Nitrate Supplement on Growth and Agar Quality in Gracilaria Dura (C. Agardh, 1842) - In Vitro Culture, Int. J. Pure App. Biosci. 6(5): 835-842 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7005