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Dinia R Dwijayanti,
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Biotropika
Published by Universitas Brawijaya
ISSN : 23027282     EISSN : 25498703     DOI : 10.21776/ub.biotropika.
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Biotropika: Journal of Tropical Biology invites research articles, short communication, and reviews describing new findings/phenomena of biological sciences in tropical regions, specifically in the following subjects, but not limited to biotechnology, biodiversity, microbiology, botany, zoology, biosystematics, ecology, and environmental sciences.
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Articles 22 Documents
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Search results for , issue "Vol 2, No 1 (2014)" : 22 Documents clear
Keragaman Morfologi Kenaf (Hibiscus cannabinus L.) KR 11 Mutan EMS (Ethyl Methanesulfonate) berdasarkan Panduan Karakterisasi Kenaf Rikza Hakin; Estri Laras Arumingtyas
Biotropika: Journal of Tropical Biology Vol 2, No 1 (2014)
Publisher : University of Brawijaya

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Abstract

Kenaf (Hibiscus cannabinus L.) merupakan salah satu sumber serat yang cukup potensial untuk dimanfaatkan secara optimal. Peningkatan pemanfaatan tanaman kenaf dapat dilakukan dengan menghasilkan varietas baru kenaf, salah satunya menggunakan EMS. Tujuan dari penelitian ini ialah mengetahui keragaman tanaman kenaf hasil mutasi EMS berdasarkan Panduan Karakterisasi Kenaf yang dikeluarkan oleh Departemen Pertanian. Penelitian dilakukan menggunakan 6 genotip berbeda, yaitu satu control (KR 11) dan lima genotip mutan EMS. Metode yang digunakan ialah melakukan pengamatan pada karakter morfologi yang meliputi karakter kualitatif dan kuantitatif dari karakter daun, bunga maupun karakter batang. Pengamatan karakter daun dilakukan pada saat tanaman berbunga pertama, karakter pembungaan diamati pada saat tanaman mengalami umur berbunga 50% serta karakter batang diamati pada saat panen. Hasil pengamatan kemudian disesuaikan dengan character state yang ditentukan dari Panduan Karakterisasi Kenaf dan dianalisis menggunakan software Clad97. Berdasarkan panduan tersebut, mutan yang memiliki keragaman paling rendah terhadap KR 11 ialah genotip mutan mutan 1 dengan nilai similaritas sebesar 94.4% sedangkan mutan dengan keragaman paling tinggi ditunjukkan oleh genotip mutan 4 dengan nilai similaritas sebesar 67.5%.
Evaluation of water quality due to human activities in the Sumber Awan spring and its chanel, Singosari Malang Raden Ayu Shufairaa' Habiebah; Catur Retnaningdyah
Biotropika: Journal of Tropical Biology Vol 2, No 1 (2014)
Publisher : University of Brawijaya

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Abstract

The aims of this research was to determine the profile of water quality based on physico-chemical properties of water, water quality index, and to determine the influence of various human activities on water quality in the Sumber Awan Spring and its Channel, Singosari Malang. Water quality evaluation is done in the spring and six locations of the spring channel after passing through agricultural activities, public toilets and human settlements with the distance of each location approximately 200 m. Physico-chemical parameters of water were observed include turbidity, pH, DO, permanganate, TSS, nitrate, ammonium, and BOD. The monitoring data is used to perform the analysis of water quality profiles using ANOVA, cluster analysis based on Bray-Curtis similarity index and biplot as well as water quality indices include Prati's implicit Index of Pollution. The results showed that human activities that occur in the channel of Sumber Awan such as agriculture, human settlements and public toilets have been affected the water quality in this spring channel. It can be seen from the decreasing of water quality from upstream to downstream. Values of pH, ammonium, permanganate, TSS and nitrate fulfilled the quality standards for class I, DO for class II, BOD for class II-IV, based on Government Regulation No. 82/2001 and turbidity value based on WHO only station one fulfilled the quality standards. Based on Prati’s index calculations the water quality was categorized in acceptable (station 1-6) and slightly polluted (station 7). Keywords : Malang, physico-chemical water quality, Sumber Awan

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