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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
Luhan, Maria Rovilla
Felera-Panizales, Jeralyn
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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.
DOI
10.1515/bot-2015-0029
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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