Induksi Akar pada Eksplan Tunas Anggrek Grammatophylum Scriptum Var. Citrinum secara In Vitro pada Media MS dengan Penambahan NAA dan BAP

Grammatophyllum scriptum var. citrinum is one variant of endangered from habitat destruction due to logging and forest fires and hunts by orchid collectors. The aim of this study was to determine the effect of BAP and NAA concentration in the root orchid propagation G. scriptum var. citrinum. The results showed that the application of BAP and NAA significant effect on the time of formation appeared roots (19 days), the best root number in the treatment of BAP 0.5 mg/l + 1.0 mg/l NAA for (5 pieces) and root length was obtained NAA 1 mg/l and a combination of 1.0 mg/l BAP + 0.5 mg/l NAA respectively 6.66 cm and 7.40 cm

Kajian Morfologi Dan Mikromorfologi (Sisik Serta Trikoma) 4 Jenis Pyrrosia Mirb. (Polypodiaceae) Di Provinsi Riau

Pyrrosia merupakan golongan tumbuhan paku epifit dari family Polypodiaceae. Penelitian ini bertujuan untuk mengkarakterisasi morfologi (rhizoma, ptiolus dan lamina) dan mikromorfologi (sisik dan trikoma) dari 4 jenis Pyrrosia yang umum dijumpai di Provinsi Riau, yaitu Pyrrosia heterophyla, Pyrrosia lanceolate, Pyrrosia longifolia dan Pyrrosia pillosheloides. Hasil karakterisasi morfologi menunjukan variasi pada organ yang diamati, terutama pada ukuran ptetiolus, bentuk dan ukuran lamina. Hasil pengamatan pada sisik menujukan varias pada warna sisik, jumlah rambut pada sisik dan posisinya. Sedangkan trikoma pada ptiolus dan lamina menunjukan persamaan bentuk yaitu stelata

Induksi Tunas in Vitro Jeruk Siam (Citrus Nobilis Lour.) Asal Kampar Dari Eksplan Tunas Apeks Dan Nodus in Vitro

Citrus nobilis Lour. is a citrus plant that is highly demanded by many people in Riau. Propagation of C. nobilis Lour. has some problems due to various diseases that decrease its production. The conventional propagation of C. nobilis. requires a lot of parent plants and takes a long time, therefore the in vitro propagation is necessary. The purpose of this study was to determine the concentration of BAP and explant source as well as the interaction between both treatments in inducing C. nobilis bud. This research used a factorial randomized block design (RBD) with two factors i.e the concentration of BAP (0, 1, 2 and 3 mg / l) and the source of explants (shoot apex and 6 week in vitro nodes). All combined treatments showed no significant difference to the emerging bud, the number of shoots and length of shoot. The results showed that the addition of 2 mg/l BAP at the apex shoot and node explants were able to induce bud. Better explant sources in inducing bud was the node explants. The node explants at a concentration of 1 mg/l BAP gave better result in inducing bud