01656naa a2200301 a 450000100080000000500110000800800410001902000180006010000300007824500540010826000090016230000140017150002570018552006730044265000120111565000140112765000250114165000110116665000130117765000110119065300150120165300120121665300110122865300130123970000160125270000200126877300660128816458512000-05-18       2000    bl uuuu     u00u1 u    #d  a85-87697-05-61 aWOODWARD, B. STEYN, A. E.  aCassava - A method for the elimination of viruses  c2000  ap.336-342  aIn: INTERNATIONAL SCIENTIFIC MEETING ON CASSAVA BIOTECHNOLOGY, 1998. Salvador-Bahia. Proceedings... Brasilia, DF: Embrapa Recursos Geneticos e Biotecnologia/CBN, 2000. 625p. Editado por Luiz J. C. B. Carvalho, Ann Marie Thro, Alberto Duarte Vilarinhos.  aCassava (Manihot esculenta Crantz) is a tropical crop grown for its thickened tuberized roots. Since cassava is propagated vegetatively by cuttings derived from stems of field-grown plants, diseases are easily transmitted. This is also true for the spread of viral diseases to which cassava is susceptible. In Africa, large yield losses occur due to cassava mosaic disease (CMD). The aim of this project is to produce disease-free cassava material for research and for distribution as planting material. An in vitro thermotherapy technique was tested for its potential to eliminate viruses in cassava, since conventional techniques may be expensive and time consuming.  acassava  acultivars  aCultura de Meristema  aEnzima  aMandioca  aVírus  aCultivares  aCulture  aEnzyme  aMeristem1 aJERICHO, C.1 aTHOMPSON, G. J.  tBrasilia: Embrapa Recursos Genetico e Biotecnologia/CBN, 2000