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Genetic Diversity and Kinship Relationships Among Black Mangrove Populations (Rhizophora mucronata) in West Sulawesi Based on Morphological Markers Mukrimin, Mukrimin; Gusmiaty; Salam, Marwah; Muslimin, Atisa
Jurnal Penelitian Kehutanan Wallacea Vol. 14 No. 2 (2025)
Publisher : Foresty Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/jpkwallacea.v14i2.36617

Abstract

Rhizophora mucronata is a black mangrove with the most productive ecosystem that has benefits many people. But in reality, because of their business, some people often neglect preserving mangrove ecosystems and habitats. This study was conducted to analyze the level of genetic diversity and the relationship between R. mucronata in West Sulawesi based on morphological markers that will be used in future restoration efforts of black mangroves around the coast. This study used ten trees from three origins: Polewali Regency Mandar, Majene, and Mamuju. Then, several parts of the tree are used for this study, namely leaves, trunks, bark, roots, flowers, and propagules. However, the observed characteristics are leaf shape, stem shape, and color samples such as bark color, stem color, root color, color propagule (fruit and hypocotyl), and leaf color with a qualitative and quantitative approach. The results of this study show that black mangroves in Polewali Mandar, Majene, and Mamuju show high-value genetic diversity. The genetic distance between Polewali Mandar and Mamuju shows a high value of 0.13, meaning they have a distant kinship. Meanwhile, the genetic distance between Polewali Mandar and Majene shows a low value of 0.09, meaning they are close relatives.  The findings of this study directly address the research urgency by highlighting the high genetic diversity of R. mucronata populations in West Sulawesi, despite increasing threats from anthropogenic activities. The observed genetic distances indicate significant variation among populations, particularly between Polewali Mandar and Mamuju, which suggests the need for targeted conservation strategies. The close genetic relationship between Polewali Mandar and Majene further emphasizes the importance of localized preservation efforts. These insights provide a scientific basis for future restoration initiatives, ensuring conservation programs maintain genetic resilience and adaptability within the mangrove ecosystem.
Keanekaragaman Cendawan Pada Tanaman Karet (Hevea Brasiliensis MULL. ARG.) Berdasarkan Pola Tanam Di Kabupaten Bulukumba Musdalifah, Nurul; Mukrimin, Mukrimin; Rupang, Maya Sari; Malesi, Wa Ode Asryanti Wida; Barus, Rizki Al Khairi; Endrawati, Tri; Yusuf, Mani
Jurnal Sains Agro Vol 10, No 2 (2025): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jsa.v10i2.1909

Abstract

Pohon karet (Hevea brasiliensis Mull. Arg.) adalah tanaman yang telah berhasil dikembangkan, terutama di dunia industri. Kebun karet tersebar luas di berbagai provinsi di Indonesia, misalnya di Kabupaten Bulukumba, dengan pola tanam monokultur dan agroforestri. Pertumbuhan karet dipengaruhi oleh banyak faktor, seperti air, iklim, tanah, hama, dan penyakit. Penyakit pada tanaman karet meliputi bintik-bintik hitam kecokelatan pada batang, jamur akar putih, dan gugur daun akibat jamur. Penelitian ini bertujuan untuk mengidentifikasi genus jamur yang terkait dengan tanaman karet berdasarkan pola penanaman dan status pemanenan. Tahap isolasi pada jaringan tanaman menggunakan metode langsung (sterilisasi permukaan), sedangkan sampel tanah menggunakan pengenceran berlapis. Hasil isolasi menunjukkan perbedaan signifikan antara jumlah isolat berdasarkan pola penanaman, sementara berdasarkan status penyadapan, tidak menunjukkan perbedaan signifikan. Keanekaragaman vegetasi dapat mempengaruhi jumlah isolat yang diisolasi. Indeks Keanekaragaman Jamur (H') pada tanaman karet menunjukkan nilai 1.97 dengan kriteria sedang. Jumlah koloni yang diisolasi sebanyak 101 isolat yang termasuk dalam 10 genus, yaitu Penicillium sp., Trichoderma sp., Aspergillus sp., Cunninghamella sp., Gliocladium sp., Gongronella sp., Paecilomyces sp., Cylindrocladiella sp., Rhizoctonia sp., dan Mucor sp.