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All Journal Jurnal Biologi Tropis
Septianingrum, Beatrix Putri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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The Effect of Leaf Area on Transpiration Rate in Various Types of Tropical Leaf Plants in Open Environments Artanti, Nabilah; Rianti, Farah; Septianingrum, Beatrix Putri; Khairurohmah, Dinda; Ramadani, Aida Lutfia; Yahya, Leoni Agustiyar Nur; Marianingsih, Pipit
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.9972

Abstract

The rate of transpiration in plants is affected by morphological characteristics and environmental conditions. This research aimed to examine how leaf surface area influences the transpiration rate of three tropical plant species: taro (Colocasia esculenta), starfruit (Averrhoa carambola), and water guava (Syzygium aqueum). The study measured the initial and final mass of leaves over a defined observation period to calculate the transpiration rate per unit area. Findings indicated that taro leaves exhibited the highest transpiration rate (0.0628 mg·cm⁻²·min⁻¹), followed by starfruit (0.0481 mg·cm⁻²·min⁻¹), while water guava recorded the lowest value (0.0350 mg·cm⁻²·min⁻¹), despite its relatively large leaf area. These results suggest that leaf area alone is not the primary determinant of transpiration rate; other factors such as cuticle thickness, stomatal density, and environmental parameters (including humidity, temperature, and light intensity) also play significant roles. Future research is recommended to explore a wider range of plant species and controlled environmental conditions to achieve more comprehensive insights.
The Effect of Ethylene Gas Exposure of Tomatoes (Solanum lycopersicum) on the Morphological Growth of Green Beans (Vigna radiata) Septianingrum, Beatrix Putri; Khairurohmah, Dinda; Kurniyati, Intan
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11475

Abstract

Ethylene is one of the natural growth hormones produced by fruits such as tomatoes, and is known to have an important role in regulating various plant physiological processes. This research was conducted to examine the effect of natural ethylene gas from tomatoes on the early growth of green bean plants (Vigna radiata). The research used a simple experimental method with two treatment groups, namely the group of plants exposed to ethylene gas from tomatoes and the control group without ethylene exposure. The observed parameters include stem height and root length in a certain period of time. Observation results show that exposure to ethylene affects the growth of green bean plants, especially in increasing the height of the stem which is more significant than control plants. Based on the findings, it can be concluded that ethylene gas produced naturally by tomatoes has the potential to accelerate the early growth of green bean plants.
Co-Authors Artanti, Nabilah Khairurohmah, Dinda Kurniyati, Intan Pipit Marianingsih Ramadani, Aida Lutfia Rianti, Farah Yahya, Leoni Agustiyar Nur