ESTRI LARAS ARUMINGTYAS
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya. Jl. Veteran, Malang 65145, East Java, Indonesia

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Macroepiphyte biodiversity on Kappaphycus alvarezii surface and its interaction with environment in cultivation centers on Lombok Island, Indonesia MURSAL GHAZALI; WAHYU WIDORETNO; ESTRI LARAS ARUMINGTYAS; CATUR RETNANINGDYAH
Biodiversitas Journal of Biological Diversity Vol. 23 No. 12 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d231224

Abstract

Abstract. Ghazali M, Widoretno W, Arumingtyas EL, Retnaningdyah C. 2022. Macroepiphyte biodiversity on Kappaphycus alvarezii surface and its interaction with environment in cultivation centers on Lombok Island, Indonesia. Biodiversitas 23: 6284-6292. The aims of this paper are to investigate the influence of environmental factors on the diversity of macroepiphytes in Kappaphycus alvarezii. Macroepiphyte sampling was carried out at four cultivation centers: Seriwe Bay, Ekas Bay, Gerupuk Bay, and Siwak of Lombok Island, West Nusa Tenggara, Indonesia. Several stations were placed at each location, and at each station were used one to three cultivation units with five replications. Environmental data measurements were carried out at the time of sampling. Some parameters were measured: pH, temperature, salinity, current velocity, brightness, DO, BOD, nitrate, phosphate, and TSS. Data analysis was performed using several diversity indices. In addition, a biplot analysis was performed using PCA to analyze the correlation between environmental factors and environmental factors to macroepiphytes. The results showed that the most dominant species was Polysiphonia spaerocharpa, and the second was Ceramium sp1. The highest richness and abundance were found in Ekas Bay. The highest species dominance was in Siwak. The highest diversity index was in Ekas Bay. The correlation between environmental factors showed that hemeroby harmed depth, phosphate, and DO and positively affected BOD and the thallus surface structure. The principal correlation analysis showed that the abundance of macroepiphyte was influenced by BOD, the roughness of host thallus, and the hemeroby index.
Phenotypic diversity of bamboo Schizostachyum lima (Blanco) Merr. population grown in several critical habitats on Lombok Island, Indonesia EVY ARYANTI; ESTRI LARAS ARUMINGTYAS; RODLIYATI AZRIANINGSIH; ENDANG ARISOESILANINGSIH
Biodiversitas Journal of Biological Diversity Vol. 24 No. 5 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240532

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Abstract. Aryanti E, Arumingtyas EL, Azrianingsih R, Arisoesilaningsih E. 2023. Phenotypic diversity of bamboo Schizostachyum lima (Blanco) Merr.  population grown in several critical habitats on Lombok Island, Indonesia. Biodiversitas 24: 2788-2796. This study aims to analyze the phenotypic diversity among populations of Schizostachyum lima (Blanco) Merr. grown in several critical habitats on Lombok Island. Sampling was conducted to record clump growth and habitat properties of 38 sites grouped based on the clump density using PAST 4.11 and ArcGIS 10.8.2 software. Sampling was conducted to record clump growth and habitat properties of 38 sites grouped based on the clump density using PAST 4.11 and ArcGIS 10.8.2 software. The results showed that habitat 1 was the most critical land and had the lowest fertility, but it provided a qualified bamboo as a raw material for the artisanal straw industry. The results showed that habitat 1 was the most critical land and had the lowest fertility, but it provided a qualified bamboo as a raw material for the artisanal straw industry. Bamboo density reached 46 culms per clump and had the smallest culms diameter of 13 mm. Bamboo density reached 46 culms per clump and had the smallest culms diameter of 13 mm. The soil comprised 90% sand, with SOC 0.9 g.kg-1, total N 0.08 g.kg-1, and CEC 8.3 me.100 g-1. The soil comprised 90% sand, with SOC 0.9 g.kg-1, total N 0.08 g.kg-1, and CEC 8.3 me.100 g-1. Meanwhile, habitat 6 and habitat 7 were lesser critical, consisted of 66% of sand, showed the best soil fertility, and mean SOC 4.98 g.kg-1, total N 0.30 g.kg-1, CEC 27.23 me.100 g-1, density 151 culms, and biggest culms diameter 33 mm. Meanwhile, habitat 6 and habitat 7 were lesser critical, consisted of 66% of sand, showed the best soil fertility, and mean SOC 4.98 g.kg-1, total N 0.30 g.kg-1, CEC 27.23 me.100 g-1, density 151 culms per clump, and biggest culms diameter 33 mm. The other habitats varied in soil quality and bamboo growth properties. It was revealed that the high culms density, diameter, height, and internodal length were significantly increased in the high soil CEC, SOC, and total N. Furthermore, the SOC and total N content significantly correlated with the wall thickness.
In vitro mutagenesis on patchouli (Pogostemon cablin Benth.) with gamma-ray irradiation on leaf explants RUT NORMASARI; ESTRI LARAS ARUMINGTYAS; RURINI RETNOWATI; WAHYU WIDORETNO
Biodiversitas Journal of Biological Diversity Vol. 24 No. 12 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d241201

Abstract

Abstract. Normasari R, Arumingtyas EL, Retnowati R, Widoretno W. 2023. In vitro mutagenesis on patchouli (Pogostemon cablin Benth.) with gamma-ray irradiation on leaf explants. Biodiversitas 24: 6407-6414. Patchouli oil production in Indonesia has yet to meet international market demand, one of which is the quality of the patchouli superior seeds. Patchouli is propagated vegetatively through cuttings, causing limited variability and decreasing plant quality. In vitro mutagenesis with gamma-ray irradiation can increase plant genetic variability and produce superior patchouli plants. This study aimed to produce patchouli variants through in vitro mutagenesis by gamma-ray irradiation on patchouli leaf explants. To accomplish the research objectives mentioned above, the research stages included in vitro mutagenesis through gamma-ray irradiation, shoot regeneration, plantlet growth, and molecular analysis using SSR (Simple Sequence Repeat). Gamma-ray irradiation inhibited the growth of explants and shoot formation but could increase plantlet growth ability at low doses of 15-30 Gy. The dose of gamma-ray irradiation that caused the death of explants in fifty percent of the tested population (LD50) was 69 Gy. Molecular analysis of SSR on 50 plants regenerated from gamma-irradiated explants revealed monomorphic and polymorphic fragments compared to non-irradiated and donor plants. Primers Pca1 and Pca2 showed the highest percentage of polymorphic, with 77.3 and 50%, respectively. Gamma irradiation during in vitro culture is an alternate method for increasing genetic variety in patchouli breeding.