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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Ramadhani Eka Putra
School of Life Sciences and Technology, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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TRUE SHALLOT (Allium cepa var ascalonicum) SEED PRODUCTION DURING OFF SEASON Ramadhani Eka Putra; D Beta Ramadan; Adriyanita Adin; Ida Kinasih; Mia Rosmiati; Indah Oktaviani; Sovia Santi Leksikowati
BIOTROPIA Vol. 28 No. 2 (2021): BIOTROPIA Vol.28 No.2, Agustus 2021
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.39 KB) | DOI: 10.11598/btb.2021.28.2.1079

Abstract

The application of seed for true shallot cultivation is an alternative of the more common cultivation practice, in which 30% of harvested tubers used for cultivation purposes. The seed production of this temperate tuber, in the tropical region, is quite challenging due to low flowers and seed formation. Several studies showed that vernalization (cold induction) and application of Benzil Amino Purin (BAP) could be applied to improve flowering and seed production. However, such studies were conducted during the best cultivation period for about 3 months and thus, limit the production period of seeds. This study was conducted to observe the effect of both methods outside cultivation periods to flower and capsule numbers, fruit set, and weight of 100 seeds compared with common cultivation. In this study, bulbs of onion vernalized at 10oC for 30 days then became subjected to synthetic hormone (BAP) prior planted while control group The results showed that BAP treated shallot group has the lowest values for all observed parameters (1552.67, 312.11, 22.5%, 0.2244 gram) compared to those vernalization treated group (1592.44, 623, 30.5%; 0.2261 gram) and control group (6774.67; 3898.44; 57.06%; 0.3304 gram). Based on this study, it could be concluded that common cultivation is a better method to produce true shallot seeds during the offseason.
OMEGA-3 CONTENT OF BLACK SOLDIER FLY PREPUPA (Hermetia illucens) FED WITH MARINE FISH OFFAL AND TOFU DREG Ramadhani Eka Putra; Yenyen Fatmalasari; Agus Dana Permana; Ida Kinasih; Mia Rosmiati
BIOTROPIA Vol. 28 No. 1 (2021): BIOTROPIA Vol. 28 No. 1 April 2021
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2021.28.1.1082

Abstract

One of the materials with great potency for future nutrition source for animal feed is prepupae of black soldier fly larvae (BSFP) (Hermetia illucens) which is fed on organic wastes. This study was designed to observe the accumulation of specific substance (omega-3) of organic wastes (marine fish offal and tofu dregs) inside harvested biomass of BSFP. A total of 150 gram food consist of marine fish offal and tofu dreg with different proportion (10:90, 25:75, 50:50, and 100% tofu dregs) was fed to black soldier fly larvae (BSFL) for 21 days.At the end of feeding trial, all BSFL were harvested, weighed, and then analyzed for omega-3 fatty acids content. Fatty acid content was analyzed using Gas Cromatography with Flame Ionization Detector (GC-FID). Result of the experiment showed BSFL reared with 25% marine fish offal produced highest biomass (8.1 g / 50 larvae) with least development time (19 days). The total of omega-3 recorded from application of 0%, 10%, 25%, and 50% of marine fish offal was 0.02%, 0.87%, 2.16% and 2.61% in 100 g of dry weight, respectively. This result showed the possibility of transferring specific nutrient from organic wastes biomass of BSFP which provides base knowledgement for further application in design of specific animal feed from BSFP.
Co-Authors Adriyanita Adin Agus Dana Permana D Beta Ramadan Ida Kinasih Ida Kinasih Mia Rosmiati Oktaviani, Indah Rosmiati, Mia Sovia Santi Leksikowati Yenyen Fatmalasari