Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Agroplantae: Jurnal Ilmiah Budidaya dan Pengelolaan Tanaman Perkebunan BIOSAPPHIRE: Jurnal Biologi dan Diversitas
Supena, Nanang
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Immunology & microbiology Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
SELF INCOMPATIBILITY PADA TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) Nurhermawati, Renica; Supena, Nanang; Arif, Mohamad
Agroplantae: Jurnal Ilmiah Terapan Budidaya dan Pengelolaan Tanaman Pertanian dan Perkebunan Vol 13 No 2 (2024): Agroplantae: Jurnal Ilmiah Terapan Budidaya dan Pengelolaan Tanaman Pertanian da
Publisher : Jurusan Budidaya Tanaman Perkebunan, Politeknik Pertanian Negeri Pangkajene Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51978/agro.v13i2.824

Abstract

Self-incompatibility (SI) is a genetic mechanism which prevents self-pollination and encourages plant cross-pollination, but the mechanism has not been studied on oil palm. The article examines possibilities of SI mechanisms on oil palm which cause pollination failure. References which were published nationally (S2-S3) and internationally (Q1-Q4) were utilized. In general, plants have two types of SI: heteromorphic self-incompatibility (HetSI) and homomorphic self-incompatibility (HomSI). HetSI is caused by plants having morphologically different flower types, while HomSI occurs when plants have morphologically similar flowers. However, an SI mechanism is still regulated at the genetic level. Homomorphic SI can also be divided into two types based on the genetic determinants of pollen incompatibility: Gametophytic Self Incompatibility (GSI) and Sporophytic Self Incompatibility (SSI). In GSI, the SI mechanism is controlled by the genotype of the pollen itself, which is haploid, while in SSI, it is determined by the genotype of the plant tissue (sporophyte) that produces the pollen and is diploid. The S-locus regulates both types of SI with different mechanisms. In seedless oil palm plants, S-RNAse was found to play a role in the degradation of pollen tubes, SRK (S-receptor kinase), and SLG (S-locus glycoprotein), which are genes that regulate the HomSI mechanism in several plants. The presence of S-RNAse and genes in the S-locus raises the possibility of an SI mechanism in oil palms that produce seedless fruit. In addition, a mechanism of stenospermy and endosperm tissue abnormalities is thought to produce fruit with sterile seeds (without embryos) in oil palms. However, it is still being determined whether both are part of the SI response or not. So, further studies are needed to confirm this and give the new perspectives
Inventarisasi Tumbuhan Bawah pada Kebun PPKS Aek Pancur Tanjung Morawa dan Potensinya sebagai Inang Fungi Endofit Ginting, Jepani Elkanalya; Supena, Nanang; Mardina, Vivi
BIOSAPPHIRE: Jurnal Biologi dan Diversitas Vol. 4 No. 2 (2025): BIOSAPPHIRE
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, UNIPAR JEMBER

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tumbuhan bawah merupakan vegetasi yang terdapat di permukaan tanah di bawah tegakan pepohonan, diantaranya adalah rerumputan, herba, dan semak belukar. Tujuan penelitian ini adalah menginventarisasi jenis tumbuhan bawah pada Kebun PPKS Aek Pancur Tanjung Morawa, Sumatera Utara dan mengkaji potensinya sebagai inang mikroba endofit. Penelitian dilaksanakan pada Agustus – September 2025. Pengambilan sampel dilakukan dengan metode eksplorasi dan jelajah bebas. Hasil penelitian adalah tumbuhan bawah berhasil dinventarisasi pada Kebun PPKS Aek Pancur terdiri dari 45 jenis dan dari total 45 jenis tersebut, ada 29 jenis tumbuhan bawah yang berpotensi sebagai inang fungi endofit berdasarkan kajian literatur. interaksi antara tumbuhan bawah dan fungi endofit sebagai bagian penting dalam dinamika ekosistem hutan terutama dalam hal siklus nutrisi, stabilitas komunitas tumbuhan, dan daya tahan terhadap perubahan lingkungan.
Co-Authors Arif, Mohamad Ginting, Jepani Elkanalya Mardina, Vivi Nurhermawati, Renica