Bananas are one of the horticultural fruit products widely cultivated in Indonesia. The country has several local banana varieties, including Kepok, Raja, and Awak, which are susceptible to Fusarium wilt. Fusarium wilt affects more than 70% of local banana varieties. This pathogen significantly reduces the productivity of local banana plants and causes the death of more than 35% of banana crops…
Gonystylus bancanus (Miq.) Kurz (ramin) is an endemic tree species of tropical peat swamp forests and is currently classified as critically endangered species. Disease resistant genes such as genes encoding NBS-LRR protein are important to maintain the existence of the species. This study aimed to analyze the NBS-LRR gene sequence in ramin growing in the production forest of PT Diamond Raya Tim…
Acrylamide is a toxic compound that is formed in foods heated above 120°C and can trigger oxidative stress that disrupts the body's metabolism. This study aims to determine the effect of acrylamide administration on cholesterol and uric acid levels in Wistar white rats. The study used 16 male rats which were divided into four treatments: P0 (control), P1 (2.5 µg/kg BW), P2 (5 µg/kg BW), and …
The Arecaceae family, also known as the palm family, is one of the oldest families among flowering plants (Angiosperms). It comprises approximately 200 genera worldwide, with about 25% or around 35 genera and 460 species found in Indonesia. This family is widely utilized for various purposes such as building materials, sources of carbohydrates or food, weaving materials, and ornamental plants. …
The propagation of pisang kepok using seedlings derived from its parents is an obstacle for farmers to produce large scale and quality seedlings. In vitro culture is a solution for banana seedling propagation. The growth rate of plants can be supported by the provision of cytokinin type growth regulators (ZPT) such as 6 Benzyl Amino Purin (BAP). This study aims to determine the effect of BAP on…
Dental and oral health problems are still experienced by many Indonesian people, one of which is caused by the bacteria Streptococcus mutans which plays a role in the formation of dental plaque. One alternative to controlling these bacteria is through natural antibacterial compounds, including those produced by endophytic bacteria. The Senggani plant (Melastoma malabathricum L.) is known to con…
Heavy metal pollution, particularly lead (Pb), is a serious environmental issue that can harm human health and ecosystems. Sustainable biotechnological approaches, such as bioremediation using microorganisms, offer a promising alternative to reduce heavy metal pollution. This study aims to examine the potential of endophytic bacteria from the roots of the Hanjuang plant (C. fruticosa) for lead …
Pyrrosia is one of genus belongs to Polypodiaceae family, this genus poses high morphological variation. This study aims to examine the relationship of three Pyrrosia species (Pyrrosia piloselloides, Pyrrosia longifolia and Pyrrosia lanceolata) from Pekanbaru, Riau based on the morphological and histochemical charactristic. Samples were collected from the field using exploration method in morph…
The Sail River plays an important role as a natural water catchment area sourced from the surrounding environment. Sail River is polluted due to high activity and produces waste that has an impact on plankton diversity in it. This study aims to analyze plankton diversity and physico-chemical conditions of Sail River waters. The research was conducted in Sail River, Pekanbaru in December 2024-Fe…
The sun bear (Helarctos malayanus) is classified as Vulnerable by the IUCN. This study aims to predict the habitat suitability distribution of the sun bear and identify the environmental variables influencing it within PT. Alam Bukit Tigapuluh, Tebo Regency, Jambi. The Maximum Entropy (MaxEnt) method was employed, which is effective for modeling species distribution based on presence-only data.…
Endophytic bacteria are bacteria that can be found in plant tissue and have mutualistic symbiosis without causing disease symptoms or damaging plant tissue. Endophytic bacteria are known to produce enzymes, antibiotics and others. This study aims to determine the characteristics of 25 isolates of endophytic bacteria from sea fern (Acrostichum aureum L.) macroscopically, physiologically and bioc…
Hemibagrus nemurus (Valenciennes, 1840) is one of the freshwater fish with high economic value and popular with the public. The bream in Siak River, Pekanbaru City, faces pressure due to environmental pollution, especially by heavy metals. This study aims to determine the growth pattern of baung fish and the quality of Siak River waters. The research was conducted in 2 locations, namely Kecamat…
The Elaeocarpaceae family is a group of green flowering plants classified under the Angiosperms, comprising 615 species across 12 genera. This family plays an important role in forest ecosystems, and its wood is utilized in the furniture industry. However, the identification and classification of species within the Elaeocarpaceae family face various challenges due to overlapping morph…
Plant diseases caused by pathogenic fungi are one type of disease that attacks cultivated plants. This study aims to test the activity of Trichoderma spp. local isolates of Riau against pathogenic fungi Ganoderma boninense and Colletotrichum spp. the Colletotrichum spp. isolation were taken from Capsiccum annuum fruit and Sansevieria trifasciata leaves with symptoms of anthracnose disease. The …
Citrus is one of the genus of the Rutaceae family originating from Asia. This study aims to determine the histochemical characteristics of the fruit skin of four species of Citrus (Rutaceae) from Pekanbaru Riau and the level of toxicity based on the LC50 value. The samples used were Citrus aurantiifolia, Citrus hystrix, Citrus limon, Citrus medica. This research was conducted from October 2024 …
The soil surface beneath mangroves is never flat, especially in the back zone. The presence of burrowing fauna such as mud lobsters (Thalassina anomala) can modify the soil surface through bioturbation processes, resulting in the formation of mounds or protrusions, as well as depressions. These modifications can influence water retention and flow. Consequently, they are also suspected to affect…
Earthworms are a group of animals that play an important role as bioindicators of soil fertility. The agricultural system applied to a land can affect the presence of earthworms. This study aims to analyze earthworm density and physico-chemical conditions of monoculture and polyculture vegetable plantations in Alampanjang Village, Kampar Regency. This research was conducted in January 2025. Pur…
Pelam mango (Mangifera laurina) is known to contain bioactive compounds such as flavonoids, phenolics, gallic acid, quercetin which are able to act as antimicrobials. The same bioactive compounds are thought to be produced by endophytic fungi. This study aims to test the antimicrobial activity of ethyl acetate of the endophytic mushroom M. laurina against Propionibacterium acnes, Staphylococcus…
The low achievement of Learning Objective Achievement Criteria (KKTP) in mathematics among students in class VII-1 at SMPN 19 Pekanbaru served as the background for conducting this research. This classroom action research aimed to improve mathematics learning outcomes and enhance the learning process through the implementation of the Problem Based Learning (PBL) model. The research design emplo…
This study was motivated by the low mathematical problem-solving Skills of students caused by inappropriate learning approaches, as well as the lack of teaching materials that support the development of mathematical problem solving skills. This study aims to produce mathematics teaching materials based on a scientific approach that is valid and practical to facilitate students' mathematical…