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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
16/09/1999 |
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Data da última atualização: |
16/09/1999 |
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Autoria: |
NASSAR, N. M. A.; VIEIRA, M. A.; VIEIRA, C.; GRATTAPAGLIA, D. |
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Afiliação: |
Departamento de Agronomia, Universidade de Brasilia; Departamento de Fitotecnia, Universidade de vicosa; Lab. de Genetica de Plantas - CENARGEN-EMBRAPA-Brasilia. |
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Título: |
A molecular and embryonic study of apomixis in cassava (manihot esculenta Crantz) |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Euphytica, v.102, p.9-13, 1998 |
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Idioma: |
Inglês |
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Conteúdo: |
In cassava, apomixis fixes heterosis and avoids transmission of systemic pathogens which complicate vegetative propagation of the crop. A combination of evidence from maternal inheritance of RAPD markers and the structure of the embryonic sac in large progeny sets of two distinct genotypes have further confirmed the occurrence of apomixis in cassava. We could advance further on earlier reports of the detection of apomixis in four ways: (1) we could arrive at an estimate of the rate of facultative apomixis in the range of 2%; (2) we detected the occurrence of apomixis in a second genotype, derived from a different interspecific cross; (3) apomictic behavior was demonstrated in an F1 individual and (4) parallel embryonic evidence was generated that corroborate the potential occurrence of apomixis by apospory. |
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Palavras-Chave: |
Interspecific hybrid; RAPD. |
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Thesaurus Nal: |
embryo sac. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01331naa a2200193 a 4500
001 1648297
005 1999-09-16
008 1998 bl --- 0-- u #d
100 1 $aNASSAR, N. M. A.
245 $aA molecular and embryonic study of apomixis in cassava (manihot esculenta Crantz)
260 $c1998
520 $aIn cassava, apomixis fixes heterosis and avoids transmission of systemic pathogens which complicate vegetative propagation of the crop. A combination of evidence from maternal inheritance of RAPD markers and the structure of the embryonic sac in large progeny sets of two distinct genotypes have further confirmed the occurrence of apomixis in cassava. We could advance further on earlier reports of the detection of apomixis in four ways: (1) we could arrive at an estimate of the rate of facultative apomixis in the range of 2%; (2) we detected the occurrence of apomixis in a second genotype, derived from a different interspecific cross; (3) apomictic behavior was demonstrated in an F1 individual and (4) parallel embryonic evidence was generated that corroborate the potential occurrence of apomixis by apospory.
650 $aembryo sac
653 $aInterspecific hybrid
653 $aRAPD
700 1 $aVIEIRA, M. A.
700 1 $aVIEIRA, C.
700 1 $aGRATTAPAGLIA, D.
773 $tEuphytica$gv.102, p.9-13, 1998
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| 1. |  | CORREA, L. A.; SILVA, J.; FRAZIER, R. D.; VIANA, A. C.; ALVES, B. C. de; SANTOS, J. L. Competição de cultivares, níveis de adubação e densidades de milho no Centro-Oeste. In: REUNIÃO BRASILEIRA DE MILHO E SORGO, 10., 1974, Sete Lagoas. Anais... Sete Lagoas: EMBRAPA-CNPMS, 1974. p. 33-57.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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