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ANALYSIS OF THE CYSTOCARP DEVELOPMENT OF SEAWEED (Kappaphycus alvarezii) ON MEDIA ENRICHED WITH A COMBINATION OF NITROGEN AND PHOSPHATE

Jurnal IPTEKS Pemanfaatan Sumberdaya Perikanan · Vol. 9 No. 2 (2022) · pp. 40–48

DOI
10.20956/jipsp.v9i2.22373
ISSN
2614-5014, 2355-729X
Published
2022-11-14
Publisher
Hasanuddin University
Language
en
License
creativecommons.org/licenses/by/4.0

Abstract

Seaweed (Kappaphycus alvarezii), in terms of providing seeds in cultivation activities, is still carried out vegetatively, namely cutting the thallus (cuttings), which is then cultivated until it is ready to be harvested (Rao & Reddy, 1997). However, such a method will experience problems, especially the provision of quality seeds on a large scale, and it does not depend on the season. The possible alternative to do is by generative seeding method. K. alvarezii can be developed for cultivation by utilizing the nature of generative reproduction through the development of carpospores, characterised by cystocarps on the surface of the thallus. However, the cystocarp that has been formed needs nutrients in the development process to produce spores of good quality and quantity. Nutrients that are needed to support cystocarp development include nitrogen and phosphate. The benefits of nitrogen and phosphate for seaweed growth cannot be replaced with other elements. This is due to the role of nitrogen as a constituent of protein and phosphate as an energy provider. This study aimed to determine the optimum nitrogen and phosphate enrichment ratio for cystocarp development. The research was carried out from November 2018 to February 2019 at the Seaweed Laboratory of the Takalar Brackish Aquaculture Fisheries Center (BPBAPT). The research location is Mappakalompo Village, Galesong District, Takalar Regency, South Sulawesi Province. They were analyzed at the water quality laboratory of Hasanuddin University to analyse the N and P content in the media. There were 6 treatments with 3 replications each, namely Treatment A: Without enrichment (SW), Treatment B: 1N=0.5 ppm: 1P=0.5 ppm, Treatment C: 2N=1 ppm: 1P= 0,5 ppm, Treatment D: 3N=1,5 ppm: 1P=0,5 ppm, Treatment E: 1N=0,5 ppm: 2P = 1 ppm, and Treatment F: 1N=0,5 ppm: 3P = 1.5 ppm. The results showed that the development of a shorter cystocarp phase was found in treatment D, which was 14 days. Meanwhile, treatment with a long time of 17 days occurred in treatment A (SW).

Keywords

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25 authors · 141 co-authorship links

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  • Institut Agama Islam Negeri Kendari
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Co-authorOrganisationJoint articles
Rustam RustamAffiliation unknown4
Marlina AchmadAffiliation unknown2
Herliyanti HerliyantiAffiliation unknown2
Nur Ulfa DamayantiAffiliation unknown2
Zainuddin ZainuddinInstitut Agama Islam Negeri Kendari1
Badraeni BadraeniAffiliation unknown1
Andi Aliah HidayaniAffiliation unknown1
Besse Tenri NurkamilahAffiliation unknown1
Dody Dh. TrijunoAffiliation unknown1
Elmi N. ZainuddinAffiliation unknown1
Edison SaadeAffiliation unknown1
Hasni Y. AzisAffiliation unknown1
Irfan AmbasAffiliation unknown1
M. Iqbal DjawadAffiliation unknown1
Muh. Yusri KarimAffiliation unknown1
Siti AslamyahAffiliation unknown1
Yushinta FujayaAffiliation unknown1
Dea PramitaAffiliation unknown1
Hilal AnsharyAffiliation unknown1
Asmi Citra Malina A.R.TassakkaAffiliation unknown1
Resi Kumala MaulaniAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unhas.ac.id/index.php/iptekspsp/oai, first harvested 5 Nov 2026, last seen 5 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en">ANALYSIS OF THE CYSTOCARP DEVELOPMENT OF SEAWEED (Kappaphycus alvarezii) ON MEDIA ENRICHED WITH A COMBINATION OF NITROGEN AND PHOSPHATE</dc:title>
	<dc:creator xml:lang="en">Sahir, Muhammad</dc:creator>
	<dc:creator xml:lang="en">Rustam</dc:creator>
	<dc:creator xml:lang="en"> Latama, Gunarto</dc:creator>
	<dc:creator xml:lang="en">Riskiani, Isma</dc:creator>
	<dc:subject xml:lang="en">Cystocarp</dc:subject>
	<dc:subject xml:lang="en">Kappaphycus alvarezii</dc:subject>
	<dc:subject xml:lang="en">Nitrogen</dc:subject>
	<dc:subject xml:lang="en">Phosphate</dc:subject>
	<dc:description xml:lang="en">Seaweed (Kappaphycus alvarezii), in terms of providing seeds in cultivation activities, is still carried out vegetatively, namely cutting the thallus (cuttings), which is then cultivated until it is ready to be harvested (Rao &amp;amp; Reddy, 1997). However, such a method will experience problems, especially the provision of quality seeds on a large scale, and it does not depend on the season. The possible alternative to do is by generative seeding method. K. alvarezii can be developed for cultivation by utilizing the nature of generative reproduction through the development of carpospores, characterised by cystocarps on the surface of the thallus. However, the cystocarp that has been formed needs nutrients in the development process to produce spores of good quality and quantity. Nutrients that are needed to support cystocarp development include nitrogen and phosphate. The benefits of nitrogen and phosphate for seaweed growth cannot be replaced with other elements. This is due to the role of nitrogen as a constituent of protein and phosphate as an energy provider. This study aimed to determine the optimum nitrogen and phosphate enrichment ratio for cystocarp development. The research was carried out from November 2018 to February 2019 at the Seaweed Laboratory of the Takalar Brackish Aquaculture Fisheries Center (BPBAPT). The research location is Mappakalompo Village, Galesong District, Takalar Regency, South Sulawesi Province. They were analyzed at the water quality laboratory of Hasanuddin University to analyse the N and P content in the media. There were 6 treatments with 3 replications each, namely Treatment A: Without enrichment (SW), Treatment B: 1N=0.5 ppm: 1P=0.5 ppm, Treatment C: 2N=1 ppm: 1P= 0,5 ppm, Treatment D : 3N=1,5 ppm : 1P=0,5 ppm, Treatment E : 1N=0,5 ppm: 2P = 1 ppm, and Treatment F : 1N=0,5 ppm : 3P = 1.5 ppm. The results showed that the development of a shorter cystocarp phase was found in treatment D, which was 14 days. Meanwhile, treatment with a long time of 17 days occurred in treatment A (SW).</dc:description>
	<dc:publisher xml:lang="en">Hasanuddin University</dc:publisher>
	<dc:date>2022-11-14</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Research article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unhas.ac.id/index.php/iptekspsp/article/view/22373</dc:identifier>
	<dc:identifier>10.20956/jipsp.v9i2.22373</dc:identifier>
	<dc:source xml:lang="en">Jurnal IPTEKS Pemanfaatan Sumberdaya Perikanan; Vol. 9 No. 2 (2022); 40 - 48</dc:source>
	<dc:source>2614-5014</dc:source>
	<dc:source>2355-729X</dc:source>
	<dc:source>10.20956/jipsp.v9i2</dc:source>
	<dc:language>en</dc:language>
	<dc:relation>https://journal.unhas.ac.id/index.php/iptekspsp/article/view/22373/8854</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2022 Jurnal IPTEKS Pemanfaatan Sumberdaya Perikanan</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by/4.0</dc:rights>
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