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Improved growth performance of Gracilariopsis heteroclada via short-term nitrogen enrichment

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Date
2015
Author
Santander-Avancena, Sheryll ORCID
Luhan, Maria Rovilla ORCID
Felera-Panizales, Jeralyn
Page views
1,267
Subject
epiphytes ASFA
growth ASFA
growth rate ASFA
agar ASFA
ammonium chloride ASFA
pond culture ASFA
thallus ASFA
aquaculture ASFA
methodology ASFA
nitrogen ASFA
ponds ASFA
Nitrogen enrichment
Total thallus nitrogen
Taxonomic term
Gracilariopsis heteroclada GBIF
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Abstract
This study examined the effect of short-term nitrogen (N) enrichment on Gracilariopsis heteroclada growth and agar quality. Planting materials were soaked in different concentrations of ammonium chloride (NH4Cl) for 6 h. Total thallus N content was highest in Gp. heteroclada enriched in 300 mg l-1 NH4Cl. Growth experiments showed that this enrichment treatment (300 mg l-1 NH4Cl for 6 h) increased the growth of Gp. heteroclada (4.22±0.09% day-1) compared with the control (3.68±0.12% day-1). Pond culture using enriched Gp. heteroclada resulted in high growth rates (6.14±0.50% day-1). No epiphyte growth was observed during either the growth experiment or the pond culture. There were no significant differences between the agar yields of the enriched (3.65±0.36%) or control (3.78±0.18%) Gp. heteroclada. Additionally, no significant differences were detected when the gel strength of the enriched (611±22 g cm-2) and control (587±11 g cm-2) Gp. heteroclada were compared. The results suggest that the short-term N enrichment method could be an alternative culture strategy to increase Gp. heteroclada production and lower farming costs.
URI
http://hdl.handle.net/10862/2954
Suggested Citation
Santander-Avancena, S., Luhan, M. R., & Felera-Panizales, J. (2015). Improved growth performance of Gracilariopsis heteroclada via short-term nitrogen enrichment. Botanica Marina, 58(6), 457-463. https://doi.org/10.1515/bot-2015-0029 
DOI
10.1515/bot-2015-0029
Type
Article
ISSN
0006-8055; 1437-4323
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  • Journal Articles [1164]

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