Judul: Pengujian Keakuratan Tabel Tegakan Wolf von Wulfing dalam Pendugaan Volume Tegakan Jati di KPH Ciamis, Jawa Barat.
Abstrak: Tabel tegakan Wolf von Wulfing yang dibuat tahun 1932 untuk menduga volume tegakan jati pada berbagai kelas umur perlu dikaji keakuratannya. Hal tersebut perlu dilakukan, karena sampai saat ini tabel tegakan jati tersebut masih digunakan oleh Perum Perhutani untuk menentukan jatah produksi tebangan (JPT). Hasil penelitian ini menunjukkan bahwa volume tegakan berdasarkan tabel tegakan Wolf von Wulfing (VWvW) cenderung lebih besar (bersifat overestimate) dibandingkan dengan volume aktual (Vaktual) yang ditaksir dengan tabel volume lokal KPH Ciamis, Jawa Barat. Sehubungan dengan hal tersebut, maka volume tegakan berdasarkan tabel tegakan Wolf von Wulfing perlu dikoreksi dengan rumus penyesuaian VWvW’ = VWvW × 0.905.
Keyword: Jati, Tabel Tegakan Jati, Wolf von Wulfing

Judul: Pengujian Keakuratan Penggunaan Tabel Tegakan Wolf von Wulfing dalam Pendugaan Volume Tegakan Jati di KPH Madiun, Jawa Timur.
Abstrak: Tabel tegakan Wolf von Wulfing merupakan tabel volume yang digunakan oleh Perum Perhutani sejak tahun 1932. Perubahan kondisi tegakan jati sejak tahun 1932 hingga saat ini menyebabkan adanya perbedaan antara pendugaan volume menggunakan tabel tegakan jati WvW dan pengukuran volume tegakan di lapangan. Oleh karena itu, penelitian ini bertujuan membandingkan taksiran volume berdasarkan tabel tegakan Wolf von Wulfing (VWvW) dengan volume aktual yang didekati menggunakan tabel volume lokal (VTVL). Penelitian ini dilakukan di areal tegakan jati BKPH Dungus, KPH Madiun pada bulan Februari hingga Maret 2017. Pengumpulan data dilakukan dengan inventarisasi tegakan jati di beberapa petak ukur yang dipilih menggunakan metode purposive sampling. Pengolahan data dilakukan dengan menghitung volume tegakan jati menggunakan tabel tegakan jati WvW dan tabel volume lokal serta dianalisis dengan menggunakan regresi linier sederhana. Hasil penelitian menunjukkan bahwa VWvW akan cenderung lebih kecil dari VTVL ketika VWvW < 99.41 dan akan cenderung lebih besar dari VTVL ketika VWvW > 99.41.
Keyword: jati, tabel tegakan, Wolf von Wulfing

Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis