Egyptian Journal of Aquatic Research (Jun 2021)

Comparison between the growth of Kappahycus alvarezii (Rhodophyta) seed from tissue culture and clone selection cultivated using horizontal net

  • Ma'ruf Kasim,
  • Abdul Muis Balubi,
  • Oce Astuti,
  • Abdul Rahman,
  • Rahmat Sofyan Patadjai,
  • Wellem Muskita,
  • Amadhan Takwir,
  • Ruslaini,
  • Bahtiar,
  • Wardha Jalil

Journal volume & issue
Vol. 47, no. 2
pp. 179 – 184


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Kappahycus alvarezii is a species of seaweed belongs to Rhodophyta class which is commonly cultivated by coastal community in tropical areas. This research therefore aimed to clarify the growth of K. alvarezii thallus from culture tissue and cloning selection cultivated using horizontal net. The method was an experimental design, which used a randomized group and Specific Growth Rate (SGR) analysis. Horizontal net was used to avoid pest attack and research failure. The results showed the total growth rate in average within 40 days from the initial 20 g growth to 120,1g and 139,7g of cloning and tissue culture seed, respectively. Meanwhile, the average of SGR of tissue culture and cloning were 6.3% and 6.7%/day, respectively. Statistically, the cloning selection method and tissue culture were not significantly different with good maintenance, especially using the horizontal net. Transparency level had a positive correlation with the growth of cloning selection seeds.