Somatic Embryogenesis in Eucalyptus grandis and E. dunni

摘要: The genus Eucalyptus belongs to the family Myrtaceae, subgroup Leptospermoideae. There are 450–700 eucalyptus species and varieties, varying in size from large broad-leafed trees shrub-like mallees. most distinguishing taxonomic feature of is presence a fused calyx and/or corolla into an operculum. E. grandis dunni quite similar terms gross morphological features. In operculum hemispherical, inflorescence umbel, peduncle distinctly flattened fruit capsule 5–11 mm diameter. leaves smooth, adaxial surface darker than abaxial one mature lanceolate, often falcate. annual bark exfoliations long fibrous. dunnii (Dunn’s white gum), also simple, 5–8 adult plants green, concolorlous, lanceolate narrow lanceolate. rough, brownish, flaky more or less corky at base, commonly with ribbons decorticating hanging branches.