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 Tabel Tegakan Wolff von Wulfing dalam Pendugaan Volume Tegakan Jati di KPH Randublatung
Abstrak: Dalam pengelolaan hutan jati di Perum Perhutani dilakukan pengaturan hasil yang direncanakan di dalam RPKH. Dalam menyusun rencana pengaturan hasil diperlukan data taksiran volume tegakan pada saat dipanen. Pendugaan volume tegakan pada saat dipanen dilakukan dengan bantuan tabel tegakan Wolff von Wulfing (WvW). Tabel tegakan Wolff von Wulfing disusun pada tahun 1932. Penelitian ini dilakukan untuk menguji keakuratan pendugaan volume tegakan jati di KPH Randublatung dengan menggunakan tabel tegakan WvW. Pengujian dilakukan dengan membandingkan volume tegakan berdasarkan tabel tegakan WvW (VWvW) dengan volume aktual. Dalam penelitian ini volume aktual didekati oleh jumlah dari volume pohon berdasarkan taksiran tabel volume lokal jenis jati yang berlaku di KPH Randublatung. Hubungan antara VWvW (X) dan VAktual (Y) dapat dinyatakan melalui persamaan Y = -8.790 + 0.889X (R2 = 94.3 %). Hasil uji terhadap parameter model regresi β0 dan β1menunjukkan diterimanya hipotesis β0 = 0 dan β1 ≠ 1. Hal ini menunjukkan bahwa taksiran volume tegakan menggunakan tabel WvW tidak akurat lagi, yakni taksiran volume tegakan berdasarkan tabel WvW cenderung lebih besar dibanding volume aktual. Untuk meningkatkan akurasi pendugaan volume tegakan menggunakan Tabel WvW diperlukan rumus penyesuaian (koreksi) VWvW’= VWvW x 0.889.
Keyword: keakuratan, tabel volume lokal, tabel tegakan Wolff 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