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Jurnal Riau Biologia
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 15 Documents
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Search results for , issue " Vol 1, No 1 (2016)" : 15 Documents clear
Siklus Hidup Kupu-Kupu Graphium agamemnon L. (Lepidoptera: Papilionidae) di Kampus I Universitas Islam Negeri Syarif Hidayatullah Jakarta FITRIANA, NARTI; MAULIDIA, NUR AZIZAH; WIJAYANTI, FAHMA
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

Graphium agamemnon butterfly often observed flying, mating and laying eggs on glodokan plants(Polyalthia longifolia Sonn.) that planted as greening along the campus corridor in UIN SyarifHidayatullah Jakarta. This study was conducted to examine the use of plants as well glodokan butterflylife cycle of G. agamemnon using survey method. Observations were made in artificial semi-naturalenclosure that was placed in the room. Parameter observations include the timing and place ofoviposition, morphology and length of each stage until imago. Based on observations, G. agamemnon puttheir eggs on the lower sides of young leaves (80%) with 88.30 ± 34.74 cm distance above the groundlevel at 9:00 up to 10:58 pm. The life cycle of G. agamemnon take place during 31-38 days, consisting ofegg stage for 2-3 days (diameter egg shell 1.233 ± 0.101 mm), first instar larvae (L1) for 2-4 days (thelength of the larvae 4.624 ± 0.673 mm) , L2 for 2-4 days (9.387 ± 2.028 mm), L3 for 1-4 days (14.883 ±2.112 mm), L4 for 2-4 days (26.036 ± 3.983 mm), L5 for 3-8 days (37.948 ± 4.280 mm), prepupa for 1-2days (32.991 ± 1.527 mm) and pupa for 12-15 days (32.532 ± 1.150 mm). Each stage has a differentmorphology. Sex ratio of male: female was 3: 2.Keywords: life cycle, butterflies G. agamemnon, glodokan
Uji Patogenisitas Fungi Entomopatogen Lokal Riau sebagai Agen Biokontrol Hama Rayap (Coptotermes curvignathus Holmgren) SINTAWATI, REGIANA; MARTINA, ATRIA; LINDA, TETTY MARTA
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

Biopesticide is a technique that can be used to the control pest population in the environment. Thepurpose of this research was to isolate fungi from the soil using baiting and cadaver technique andpathogenicity test. Isolates which had high germinating conidia was tested their patogenicity againstCoptotermes curvignathus. A total of 12 isolates were baited from soil and cadaver samples at palm oilplantation. The result showed eight isolates had high germinating conidia categories (˃ 80%). Thepathogenicity test of four isolates showed 100% mortality for RB.r01 and BK.r01; and KB.r01 andNK.r01were 72% and 67% respectively. Isolates capability against termite was not significantly different,but it was significantly different from control.Keywords : entomopathogenic fungi, pathogenicity, Coptotermes curvignathus, biocontrol
Induksi Tunas in vitro Jeruk Siam (Citrus nobilis Lour.) Asal Kampar pada Berbagai Konsentrasi Sukrosa FATONAH, SITI; ISDA, MAYTA NOVALIZA; LESTARI, WAHYU
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

This study aimed to determine the most effective concentration of sucrose for a shoot induction fromcotyledon explants of Citrus nobilis from Kampar. Cotyledon explants were cultured on Murashige andSkoog (MS) medium containing sucrose at various concentrations without supplemented with growthregulators. The treatments consisted of five concentrations of sucrose, i.e. 0, 20, 30, 40, 50, 60 g /l. Theresult showed that all explants on different concentrations of sucrose treatment had the percentage ofliving and the percentage of shoot induction reached 100%. The best response for shoot induction aftereight weeks of culture was observed on MS medium supplemented with 50 g/l sucrose with the number ofshoot was 2, shoot length was 4,125 cm, and leaf number was 5,74 strands.Key words: Citrus nobilis lour., concentration of sucrose, in vitro, shoot induction
Identifikasi Jamur Penyebab Penyakit Pascapanen pada Beberapa Komoditas Bahan Pangan PRATIWI, NOVA WAHYU; JULIANTARI, ERWINA; NAPSIYAH, LUTFI KHOTUN
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

Food commodities can actually be stored for a long term after harvesting, but there are some constraintsof decrease in the quality of the fruit because of several postharvest diseases caused by microorganismssuch as fungi, bacteria, and viruses. The most frequently postharvest diseases trigger found is a group ofpathogenic fungi. The results of identification of fungi causing disease in several types of fruitpostharvest which were performed by blotter test method and medium PDA showed that Colletotricumcapsici fungi was found in chili, Rhizoctonia solani in bananas and tomatoes, Amerosporium sp. inpapaya, Pythium sp. on bananas, Fusarium solani on mango, banana, and papaya, and Phomopsis sp. ontomatoes.Keywords: fungi, food commodity, identification, postharvest diseases
Uji Teratogenik Ekstrak Minyak Biji Jintan Hitam (Nigella sativa) pada Mencit (Mus musculus l.) Bunting SETYAWATI, IRIANI; SUDATRI, NI WAYAN
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

This experiment was performed to examine the effects of black cumin (Nigella sativa) seed oil extract onreproduction performance and fetus development if given during organogenesis period. Forty pregnantmice were randomly divided into four groups. Extract was treated orally by gavage with doses 0%(control), 0.1 ml, 0.2 ml, and 0.3 ml since gestation day 6 to 15. Caesarean section were performed topregnant mice on day 18 to remove fetuses. Observation covered reproduction performance i.e. the foetusnumber (reabsorptions, dead/ alive foetus), and morphological of the foetus (weight and length of thelitter, and malformations). Statistical analysis was performed using Anova and Duncans Multiple RangeTest. Teratogenic effects of black cumin oil extract caused decreasing of reproductive performance of themother (alive foetus decreased, dead and resorbed foetus increased) and an increased incidence of birthdefects (fetal weight and length and fetal hemorrhage).Keywords: Nigella sativa, congenital malformations

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