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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
15/04/2004 |
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Data da última atualização: |
15/04/2004 |
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Autoria: |
MAFLA, G; ROA, J. C; GUEVARA, C. L. |
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Título: |
Advances on the in vitro growth control of cassava, using silver nitrate. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Revista Brasileira de Mandioca, Cruz das Almas, v.17, p.53, nov, 1998., Suplemento. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Forty-four varieties of the world cassava collection (Manihot esculenta Crantz) held invitro at CIAT since 1979 with subculture period between 7.53 to 18.45 months, were examined for their responses to the presence of silver nitrate, an ethylene inhibitors. In order to improve the traditional method of in vitro conservation of this specie by reducing the growth rate and increasing the period of conservation of clones, the classical formulation of medium was supplemented with various concentrations of silver nitrate (23:54 M, 47.06 M, 70.62 M, 82.40 M). Eigtheen months after initiating this study, all the concentrations tested resulted in a major reduction in growth, as related to the control. Between 58.85 M and 82.40 M better results were observed, having all plants shorter internodes, a lower rate of defoliation, and a more high percentage of survival. Silver nitrate has so far extended subculturing time up to six more months in those short and medium lived varieties, but we expect even more on those long lived. Although the selected varieties corresponded to a small set out of the collectionan and representing their storage ability, we consider to obtain similar effects on the rest of the collection.
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Categoria do assunto: |
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Marc: |
LEADER 01665naa a2200145 a 4500
001 1651887
005 2004-04-15
008 1998 bl uuuu u00u1 u #d
100 1 $aMAFLA, G
245 $aAdvances on the in vitro growth control of cassava, using silver nitrate.
260 $c1998
520 $aAbstract: Forty-four varieties of the world cassava collection (Manihot esculenta Crantz) held invitro at CIAT since 1979 with subculture period between 7.53 to 18.45 months, were examined for their responses to the presence of silver nitrate, an ethylene inhibitors. In order to improve the traditional method of in vitro conservation of this specie by reducing the growth rate and increasing the period of conservation of clones, the classical formulation of medium was supplemented with various concentrations of silver nitrate (23:54 M, 47.06 M, 70.62 M, 82.40 M). Eigtheen months after initiating this study, all the concentrations tested resulted in a major reduction in growth, as related to the control. Between 58.85 M and 82.40 M better results were observed, having all plants shorter internodes, a lower rate of defoliation, and a more high percentage of survival. Silver nitrate has so far extended subculturing time up to six more months in those short and medium lived varieties, but we expect even more on those long lived. Although the selected varieties corresponded to a small set out of the collectionan and representing their storage ability, we consider to obtain similar effects on the rest of the collection.
700 1 $aROA, J. C
700 1 $aGUEVARA, C. L.
773 $tRevista Brasileira de Mandioca, Cruz das Almas$gv.17, p.53, nov, 1998., Suplemento.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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