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INDONESIA
Planta Tropika
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 0216499X     EISSN : 25287079     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
PLANTA TROPIKA : Jurnal Agrosains (Journal of Agro Science) provides a forum for researchers on applied agricultural science to publish the original articles. PLANTA TROPIKA published two times a year (February and August) by Universitas Muhammadiyah Yogyakarta in collaboration with Indonesian Association of Agrotechnology / Agroecotechnology (PAGI). Planta Tropika focuses related to various themes, topics and aspects including (but not limited) to the following topics Agro-Biotechnology, Plant Breeding, Agriculture Waste Management, Plant Protection, Soil Science, Post Harvest Science and Technology, Horticulture.
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 12, No 1 (2024)" : 10 Documents clear
In Vitro Regeneration of Ragleaf (Crassocephalum crepidioides (Benth.) S.Moore) Using Kinetin Abdulsalam, Murtadha, Mosobalaje; Olanike, Oladejo, Omobolanle
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.20022

Abstract

Micropropagation is a valuable means for large-scale production and preservation of invasive alien species such as ragleaf. To determine the concentration of kinetin adequate for in vitro growth of the ragleaf flower, seeds of the plant were propagated in vitro using Murashige and Skoog medium supplemented with basal 0.5 mg L-1 Naphthalene Acetic Acid and incubated for four weeks. The growing shoots were cut into pieces and inoculated into MS media with five kinetin concentrations: 0.0, 1.0, 1.5, 2.0, and 2.5 mg L-1. The tubes were kept in an incubation room for seven weeks. The experiment was arranged in a completely randomized design with ten replications. Shoot length (cm) and the number of leaves, nodes, and roots were measured. The control medium recorded less growth performance across all the variables, indicating the important role of the exogenous kinetin. The plants in 2.50 mg L-1 kinetin were the tallest (7.23±0.87 cm) with the highest number of leaves (28.17±2.57), nodes (10.50±1.02) and shoots (3.83±0.17). The media containing 2.50 mg L-1 kinetin also produced the highest number of roots (9.00), which is necessary for the survival of the seedlings. The results indicate that 2.5 mg L-1 is adequate for cultured C. crepidioides.
Investigation the Potential of Myopopone castanea Smith (Hymenoptera: Formicidae) as Bio-Agent of Oryctes rhinoceros (Coleoptera: Scarabaediae) in Oil Palm Plantations Widihastuty, Widihastuty; Tobing, Maryani Cyccu; Utami, Sri; Munar, Asritanarni
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.15957

Abstract

The Myopopone castanea Smith (Hymenoptera: Formicidae) is a predator of Oryctes rhinoceros Linn larvae, the main pest on oil palm plantations.  These predatory ants have potential as biological agents because they have similar niches to their prey. This research aimed to explore the presence and potential of M. castanea as bio-agents in oil palm plantations and obtain knowledge about the abiotic environment of Myopopone castanea ant nests. The research was conducted in oil palm plantations owned by PTPN 4 Adolina, PTPN 2 Pagar Merbau, and smallholder oil palm plantations in Binjai, North Sumatra Province.  Sampling was conducted using the purposive sampling method and as many as 10 sample points in each plantation. The results showed that the average temperature and humidity in the ant nests were 29.4 °C and 70.5%, respectively. The number of individual ants in a colony varied greatly in number and developmental stages. The predation potential of Myopopone castanea ants in the field reached 50.3% for five days of exposure in smallholder plantations and 46,9% in Adolina Plantation. This research could be the opportunity to use Myopopone castanea ants as a biological control for larvae Oryctes rhinoceros in oil palm plantations.
Front Matter Planta Tropika Vol. 12 No. 1 tropika, Planta
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.23229

Abstract

Genetic Diversity of Ramie (Boehmeria Nivea L. Gaudich.) Originating from Wonosobo and Malang Based on Simple Sequence Repeat (SSR) Molecular Markers Annisa, Annisa; Pangestu, Widya Nur; Kusmoro, Joko; Irawan, Budi
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.16049

Abstract

Ramie has been widely used as a fiber crop for over 4000 years. The fibers are durable, white in color, and smooth in texture. Information on genetic diversity is important for selecting good breeding materials to produce superior offspring. This study aimed at determining the genetic diversity of Boehmeria nivea (L.) Gaudich. from Wonosobo and Malang using SSR as molecular markers. Nineteen accessions of ramie were analyzed for genetic diversity using 9 SSRs located adjacent to the gene associated with fiber yield traits. This study included the DNA extraction, amplification, and visualization of amplification. Data analysis included the allele number, frequency, PIC value, heterozygosity, Shannon information index, and AMOVA analysis. The results showed 229 alleles, with an average polymorphic percentage of 68.67%, the average allele frequency ranging from 0.07 to 0.11, an average PIC value of 0.84, and Jaccard's similarity score of 0-0.18. The He and Ho values in both populations were 0.719 and 0.278, respectively. AMOVA analysis revealed that 88% of the observed molecular variance was due to genetic differences within the population, whereas 12% of genetic variation was partitioned between populations. The present study showed high genetic diversity between Wonosobo and Malang ramie. This finding might support further programs for the fiber and biomaterial industry.
Back Matter Planta Tropika Vol. 12 No. 1 tropika, Planta
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.23231

Abstract

Effects of Postharvest Storage Temperature on Physical Characteristic, Phenolic Compounds, and Antioxidant Activity of Cocoa Pod Husk Salfi, Wa Ode Nurhidayah; Ningrum, Andriati; Supriyadi, Supriyadi
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.19574

Abstract

Cocoa pod husk (CPH) is a good source of bioactive components such as phenolic compounds, which are known to have potential as antioxidants. Research on the effects of postharvest storage conditions on bioactive compounds of CPH is still limited. Therefore, this study aimed to evaluate the impact of postharvest storage temperature (20, 30, and 40 °C) and time on the physical characteristics, phenolic compounds, and antioxidants of CPH. The results indicated that storage for nine days reduced the color and moisture content of CPH while the texture hardened (especially at 20 and 40 °C). Total phenolic compounds (TPC) increased to 97.9% when CPH was stored at 20 °C for nine days, which was associated with an increase in catechin content and antioxidant activity. The first-order kinetic model was suitable for predicting the kinetics of changes in color, moisture content, hardness, TPC, and DPPH. The calculated Ea values indicated that the storage temperature caused the color of CPH to change easily to brown and the catechin and caffeic acid compounds to form easily. Overall, it is better to store CPH at 20 °C for nine days to increase the quality.
Prediction of Respiration Measurement Based on Temperature Differences of Fresh Strawberry (Fragaria x Ananassa var. Kelly Bright) in a Tropical Environment Rizky, Widha Mutiara; Pamungkas, Agung Putra; Falah, Mohammad Affan Fajar
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.17855

Abstract

Strawberry is a high-economic-value horticultural product that can be cultivated in tropical areas like Indonesia. Horticultural products retain their metabolism after harvest, such as respiration, which is an indicator of the degradation of products during storage. This study aimed to determine the best equation for predicting the respiration of strawberries cultivated using hydroponics in a greenhouse in Cangkringan, Yogyakarta. The respiration rate during storage was measured using an oxygen meter (DO-5510, Lutron, Taiwan) and a carbon dioxide meter (GH-2018 model, Lutron, Taiwan) in a closed system using an acrylic closed chamber. Five types of Michaelis-Menten equations were chosen as the best type based on R². The Arrhenius equation was used to get the highest value of R2 to predict the effects of temperature on respiration. Statistical analysis was used to determine the impact of treatments on the respiration rate. Based on the Arrhenius equation, the respiration of strawberries on postharvest in tropical environments depended on temperature. The best type for predicting the respiration of strawberries using the Michaelis-Menten mathematical model is competitive with an R2 value of 0.88. Therefore, the appropriate postharvest treatment is essential to add carbon dioxide or reduce oxygen levels. 
Inoculation Methods to Determine Resistance of Phalaenopsis amabilis (L.) Regeneratded from Irradiated Protocorms to Dickeya dadantii Putri, Halida Adistya; Sukma, Dewi; Sudarsono, Sudarsono; Purwito, Agus
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.16731

Abstract

Soft-rot disease (SRD) in Phalaenopsis, caused Dickeya dadantii, has resulted in significant losses in the orchid sector in Indonesia. This study aimed to evaluate the inoculation method of Dickeya dadantii and identify the resistance response of individual regenerated plantlets of Phal. amabilis from irradiated protocorm. A detached leaf assay was used to evaluate the inoculation method and resistance response of SRD. Based on the results of this study, Dickeya dadantii bacteria could only infect the leaves through wounding tissue. The density of bacteria that could infect leaf tissue was OD600 = 0.2. All dilution factors tested caused soft rot symptoms in P. amabilis. On the other hand, Vanilla planifolia only showed symptoms at a dilution factor of 10-0. Four accessions of regenerated plantlets from irradiated protocorms were resistant to SRD. They were from irradiation 5 Gy (IP 05 Gy-23, IP 05 Gy-31, and IP 05 Gy-33) and one accession from the control treatment or without irradiation (IP 0 Gy -1). These results showed that 5 Gy irradiation increased plant resistance to SRD in Phalaenopsis. A dose of 5 Gy can potentially produce mutant lines resistant to SRD in Phalaenopsis or other plants, too.
The Effect of Benzyl Amino Purin and NaphtalenaAcetic Acid Applications on Direct Shoot Organogenesis in Porang (Amorphophallus muelleri B) Restanto, Didik Pudji; Aji, Seto Purnomo; Handayani, Etty; Ratnasari, Tri; Jadmiko, Mochammad Wildan; Prayoga, Mohammad Candra; Khozin, Mohammad Nur; Kriswanto, Budi
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.18063

Abstract

Porang (Amorphophallus muelleri B.) is a tuberous plant with the potential to be the main source of carbohydrates and is rich in benefits. Porang proliferation is limited by a 6-month dormancy period per year, and generative propagation is unlikely due to the seeds being apomictic triploid. The aimed of my research to analyze the application of BAP and NAA in culture media for direct propagation of porang shoots. The explant used in this research was young leaves. The research was arranged in a completely randomized design with a combination of BAP and NAA hormones added to the MS medium. There were three BAP treatments, namely 1.0 mg/L, 2.0 mg/L, and 3.0 mg/L, while NAA treatments consisted of 2 levels, namely 2.0 mg/L and 4.0 mg/L. The addition of 1.0 mg/L BAP combined with 4.0 mg/L NAA was the best treatment that produced seven shoots with an average shoot length of 2.14 cm and root length of 3.6 cm, with the earliest bud emergence (9.7 weeks after planting).
Utilizing Rice Hull Ash and Biomass as Ameliorants Enhanced Soybean Yield and Nutrient Uptake in Tidal Swamps Under Saturated Soil Culture Toyip, Toyip; Ghulamahdi, Munif; Sopandie, Didy; Aziz, Sandra Arifin; Sutandi, Atang; Jarwadi Purwanto, Mohamad Yanuar
PLANTA TROPIKA Vol 12, No 1 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i1.18486

Abstract

Saturated soil culture (SSC) is a promising technology for cultivating soybeans in acidic soil in tidal swamps. The objectives of this study were to measure nutrient uptake in the soybean plant using a saturated soil culture technique and to assess the impact of ameliorant addition in the form of rice biomass and rice hull on soybean yield. Two factors, rice biomass, and rice hull ash, were used in a split plot factorial design to set up the experiment. Four levels in the main factor included without biomass immersion, one immersion of short (3 cm above the root) rice stubble, one immersion of regular (panicle harvested only) rice straw, and two immersions of regular rice straw cut in the soil. The four levels in the subfactor were 0 t ha-1, 0.25 t ha-1, 0.50 t ha-1, and 0.75 t ha-1 of rice hull ash doses. Ameliorant in the form of biomass and rice husk increases soil quality in tidal swamps by enhancing pH, soil nutrients (N, P, K, S), CEC, cations, and base saturation, also reducing toxic compounds and improving soil texture. Application of ameliorant also increases soybean nutrient uptake and eventually increases the productivity of soybeans in tidal swamp acid soil. The best treatment of the first and second factors was one immersion of biomass with a regular cut of rice straw and 0.5 t ha-1 ash rice hull ash addition to the tidal swamp soil, respectively. 

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