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All Journal Jurnal Biologi Tropis Jurnal Biosilampari: Jurnal Biologi
Dias Idha Pramesti
UIN Sunan Kalijaga
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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IDENTIFIKASI FENOMENA SELF-INCOMPATIBILITY PADA Hibiscus rosa-sinensis L. Dias Idha Pramesti
Jurnal Biosilampari : Jurnal Biologi Vol 3 No 2 (2021): Biosilampari
Publisher : LP4MK STKIP PGRI Lubuklinggau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31540/biosilampari.v3i2.1270

Abstract

Hybridization is one way to produce Hibiscus rosa-sinensis L. which have various shape and colour of flowers. However, this is hampered by the possibility of self-incompatibility in Hibiscus rosa-sinensis L. To identify self-incompatibility in Hibiscus rosa-sinensis L. the simplest methods are used by observing the morphology and anatomy of fruit development, followed by a descriptive analysis of the data that has been obtained. The analysis results on crossing artificial pollination to 103 flowers of single pink Hibiscus rosa-sinensis L. show that the fruits survive until day 7 after pollination. Furthermore, the data show that there is no fruit, seed, and embryo development. Indeed the fruit turns yellow and finally shed. But the self artificial pollination shows that 35 seeds develop from 96 pollinations. The longer seed, which 13 days after pollination, grew up. The globular embryo could find on 3 DAP (day after pollination) fruit set, and the 9 DAP fruit set shows the development of heart shape. The result suggests that the phenomenon of self-incompatibility on Hibiscus rosa sinensis L. predicts as postzygotic self-incompatibility.
Riparian Vegetation and Invasive Species in the Boyong River, Yogyakarta Eka Sulistiyowati; Dias Idha Pramesti; Abdul Rafi Hidyatulah; Asya Nur Hayati; Ilham Ikhlasul Amal
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
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.v26i3.12181

Abstract

Riparian ecosystem in Boyong river represents an urban stream ecosystem exposed to multiple environmental pressures, including agricultural runoff, domestic wastewater discharge, and periodic post-eruptive material flows originating from Mount Merapi. The study was conducted through vegetation exploration and macrophyte species identification across several river segments (n sites= 3). The results revealed that the macrophyte community was predominantly composed of herbaceous and shrub species with high tolerance to environmental disturbances (the number of species =259). Native non-invasive plant species were relatively limited in number, whereas several introduced species exhibited high invasive potential within the riparian zone. These findings indicate the presence of ecological pressures that influence vegetation community structure and potentially contribute to the degradation of river ecosystem quality. This study provides preliminary ecological information on the condition of the Boyong River and highlights the importance of riparian vegetation management and invasive species control to maintain the ecological health of urban river ecosystems.
Co-Authors Abdul Rafi Hidyatulah Asya Nur Hayati Eka Sulistiyowati Ilham Ikhlasul Amal