Genetic Transformation in Boehmeria nivea Gaud. (Ramie Fiber)
The genus Boehmeria (family Urticaceae) comprises more than 150 identified species (Jackson 1895; Davies 1987). One of the economically most important species is ramie, Boehmeria nivea Gaud. Ramie, Tchou in China, and Chinagrass or rhea-fiber in the Anglo saxon regions, is one of the oldest fiber plants known to mankind It is a perennial, shrubby plant, between 1 to 2 m in height, whose stems carry few, short branches. The alternating, long-petiolated leaves are between 10 to 20 cm long; the small, whitish flowers are organized in panicles. The numerous seeds are of the archene type, about 1.5 mm in length. Ramie is usually propagated by parts of its rhizomes and, less frequently, by stem cuttings. Propagation via the diploid seeds is also possible, though impractical due to the large number of sterile seeds and because the few fertile seeds give rise to plants with broad variations with respect to fiber content and quality. Although ramie is an easy-growing crop, it requires heavy manuring and, until the plants are about 60 cm high, interrow cultivation is practiced in order to control weeds (Willimot 1954).
KeywordsGerminate Manure Methionine Gall Kanamycin
Unable to display preview. Download preview PDF.
- Benatti Junior R (1985) Rami - planta têxtil e forrageira. Campinas, Fundaçâo Cargill, 97 ppGoogle Scholar
- Calderon-Urrea A (1988) Transformation of Manihot esculenta (cassava) using Agrobacterium tumefaciens and expression of the introduced foreign genes in transformed cell lines. MS thesis, Vrije Univ, BrusselGoogle Scholar
- Davies RA (1987) Index Kewensis. Master Sci Thesis, Clarendon Press, Oxford, 346 pp (Suppl 17 )Google Scholar
- De Almeida ERP, Gossele V, Muller CG, Dockx J, Reynaerts A, Botterman J, Krebbers E, Timko MP (1989) Transgenic expression of two marker genes under the control of an Arabidopsis rbc S promoter: sequences encoding the rubisco transit peptide increase expression levels. Mol Gen Genet 218: 78–86CrossRefGoogle Scholar
- Dusi DMA (1991) Regeneraçâo e transformaçâo de rami (Boehmeria nivea Gaud.). Master Sci Thesis, Univ Brasilia, Brasilia, DF, Brazil, 38 ppGoogle Scholar
- Dusi DMA, Dubald M, De Almeida ERP, Caldas LS, Gander ES, Erratum Plant Cell Rep 13: 294 (1994)Google Scholar
- Jackson BD (1895) Index Kewensis, vol 1. Clarendon Press, Oxford, 1268 ppGoogle Scholar
- Medina JC (1968) Cultura do rami. ABC do lavrador 68, Ediçâes Melhoramento, 32 ppGoogle Scholar
- Ribeiro Filho J (1968) Cultura do rami. Viçosa, Univ Rural do Estado de Minas Gerais, Escola Superior de Agricultura, 65 ppGoogle Scholar
- Sambrook J, Fritch EF, Maniatis T (1989) Molecular cloning. A laboratory handbook. Cold Spring Harbor Laboratory Press, Cold Spring HarborGoogle Scholar
- Willimot SG (1954) Ramie fiber, its cultivation and development. World Crops 6: 405–408Google Scholar