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Struktur Anatomi Daun Phyllanthaceae di Kabupaten Banggai Kepulauan Wulansari, Tri Yuni Indah; Dewi, Asih Perwita
Al-Kauniyah: Jurnal Biologi Vol 14, No 1 (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.v14i1.14395

Abstract

Abstrak Pengenalan ciri makhluk hidup dalam praktik identifikasi sebagian besar menggunakan ciri morfologi. Ciri anatomi memperkuat ciri morfologi atau menyelesaikan permasalahan kerancuan identifikasi secara morfologi. Penelitian ini bertujuan untuk mengetahui karakter anatomi daun pada 11 spesies famili Phyllanthaceae yang ditemukan di wilayah eksplorasi Kabupaten Banggai Kepulauan. Metode yang digunakan adalah pembuatan preparat paradermal dan transversal helai dan tangkai daun. Karakter yang diamati pada setiap preparat adalah karakter paradermal yaitu epidermis dan derivatnya, karakter transversal meliputi bentuk dan jumlah lapisan epidermis, mesofil, keberadaan kristal dan karakter khusus spesies serta bentuk berkas pengangkut pada tulang daun dan tangkai daun. Berdasarkan preparat paradermal daun diperoleh tipe daun hipostomatik dengan tipe stomata umumnya parasitik dan anomositik, dan ditemukan variasi tipe stomata anisositik pada Baccaurea nanihua dan Antidesma excavatum. Pada preparat transversal diperoleh tipe daun dorsiventral, bentuk epidermis dan jaringan tiang yang beragam. Pada organ tangkai daun, ditemukan empat tipe berkas pengangkut, yaitu bentuk lonjong dengan dua tambahan berkas pengangkut, bentuk dasar menyerupai ginjal, bentuk semi-lunar, dan bentuk lonjong dengan satu berkas pengangkut. Abstract Morphological characters are commonly used as a tool for plant identification. Anatomical characters can also be used as additional characters to provide strong descriptions of morphological characters and to resolve unclear identification of morphological characters. This study aims to identify leaf anatomical characters of 11 species of Phyllanthaceae family collected from the Banggai Kepulauan Regency. The characters are observed in each slide were paradermal characters, namely epidermis and its derivatives; transverse characters including the shape and number of epidermal layers, mesophyll, presence of crystals and species-specific characters as well as the shape of the vascular bundle on the midrib and petiole. The observation on paradermal section of lamina showed that all species have hypostomatic leaf, parasitic and anomocytic stomata types with variation of the anisocytic types were found in Baccaurea nanihua and Antidesma excavatum.Observation of the transverse section showed dorsiventral leaf types, size variation of upper epidermal cells as well as variations of palisade cells. The observation on transverse section of the petiole showed four types of vascular bundles in the petiole: oval shape along with two small separated vascular, the kidney – like shape, the semi-lunar shape and oval single vascular bundle.
The changes of chili leaf structure by Geminivirus infection Taufik, Muhammad; Firihu, Muhammad Zamrun; HS, Gusnawaty; Variani, Viska Inda; Hasan, Asmar; Botek, Muhammad; Tihurua, Eka Fatmawati; Wulansari, Tri Yuni Indah
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 1 (2024): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.124109-119

Abstract

The Geminivirus in chili plants is a significant problem in chili cultivation. Symptoms of Geminivirus infection are quite easy to find in chili plants because the symptoms are quite typical: mosaic, yellowing, small leaves, leaf lamina malformation, and stunting. The visual changes in leaf morphology are due to the leaf tissue structure, such as the upper and lower epidermis and the mesophyll tissue, including the palisade and sponge. There is little information about changes in the structure of chili plants infected with the Geminivirus. Therefore, this study aims to add information about changes in the leaf tissue structure of chili plants infected with the Geminivirus. The structural changes observed were palisades. Long palisades were less preferred by whiteflies, so the incidence of geminivirus disease was lower. This information is a reference for assembling chili plants with better structural resistance. The method used was a cross-section of chili leaves, double staining, and observation with a light microscope. Observations on mild symptoms showed epidermal cells shrinking. Some parts of palisade leaves were composed of two layers with shortened cells and tend to be oval. The symptom is that the upper epidermal cells were shrunken, and the palisade also tends to shorten. Severe symptoms of the epidermis on the leaves were curly, shriveled, thinned, and even dying; the palisade is shortened and sometimes looks irregular/tight. Changes in the leaf tissue of chili plants infected with the Geminivirus cause changes at the ultra-structural, cell, or tissue level, depending on the type of virus attack and the attack level.