Claim Missing Document
Check
Articles

Found 2 Documents
Search

Variasi Struktur Anatomi Daun Beberapa Jenis Alpinia Roxb. di Malesia Eka Setiawan; Miftahudin Miftahudin; Marlina Ardiyani; Tatik Chikmawati
Al-Kauniyah: Jurnal Biologi Vol 14, No 2 (2021): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v14i2.17446

Abstract

AbstrakKetidaksesuaian sistem klasifikasi Alpinia berdasarkan ciri morfologi dengan ciri molekuler menyebabkan sistem klasifikasi pada marga ini masih bermasalah. Data tambahan dari anatomi Alpinia diperlukan untuk mendukung sistem klasifikasi pada marga ini. Sayatan paradermal adaksial dan abaksial dari daun tujuh jenis Alpinia diamati. Sampel diambil dari koleksi Kebun Raya Bogor (KRB) yang mewakili jenis A. galanga, A. mutica, A. padacanca, A. macrocrista, A. malaccensis, A. pusilla, dan A. ligulata. Sebelas ciri Alpinia diamati seperti; ukuran stomata, jumlah stomata, indeks stomata, kerapatan stomata, tipe stomata, ukuran sel tetangga, jumlah sel tetangga, bentuk sel tetangga, ukuran epidermis, jumlah epidermis, dan bentuk epidermis. Hasil pengamatan menunjukkan bahwa beberapa ciri dapat digunakan untuk membedakan jenis Alpinia, seperti bentuk dan ukuran epidermis; ukuran, kerapatan dan indeks stomata; serta ukuran sel tetangga. Sementara ciri lainnya, seperti tipe stomata dan bentuk sel tetangga pada semua jenis Alpinia memiliki bentuk yang sama sehingga tidak dapat digunakan untuk membedakan jenis Alpinia.Abstract The incompatibility of Alpinia classification system based on morphological and molecular character causes classification system of this genus is still problematic. Additional data from Alpinia anatomy are needed to support the classification system in this genus. Adaxial and abaxial sides paradermal incisions of seven Alpinia species were observed. The samples were taken from the Bogor Botanical Gardens (KRB) collection representing A. galanga, A. mutica, A. padacanca, A. macrocrista, A. malaccensis, A. pusilla, and A. ligulata. Eleven Alpinia characteristics were observed; stomatal size, number of stomata, stomatal index, stomatal density, stomatal type, neighboring cells size, number of neighboring cells, neighboring cell shape, epidermal cells size, number of epidermal cells, and epidermal cells shape. The results showed that several characteristics can be used to distinguish Alpinia species, such as the shape and size of epidermal cells; the size, density and index of stomata; and the size of neighboring cells. Several other characteristics, such as the type of stomata and shape of neighboring cells in all species of Alpinia have the same shape so the characters cannot be used to distinguish Alpinia species. 
An addition to the alien flora of Java: the first record of adventive Costus dubius (Costaceae) Wendy Achmmad Mustaqim; Eka Setiawan
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2514

Abstract

More than 6000 plant species, native and introduced, have been recorded in Java that includes the Costaceae family. In the last few years, several additions of alien Costus species have been published from Java. In 2019, a set of specimens of wild Costus sp. was collected from Institut Pertanian Bogor, Bogor, West Java Indonesia. This species is not similar to any previously recorded wild Costus in Java. Therefore, this research aims to identify the collected specimen and provide a taxonomic account for the species. The morphological description was made from the living plant and the collected herbarium. The description was used to identify the species, supported by field notes and photographs. The result showed that the recently collected specimen belongs to Costus dubius. Before this finding, the plant was only known in cultivation in the Bogor Botanical Garden. Therefore, this finding represents the first record of the adventive population of C. dubius in Java and increases the number of wild Costus in Java into seven species. Further researches on Costus in Java are suggested such as the ecological impact due to the presence of several non-native species.