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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
19/11/2003 |
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Data da última atualização: |
28/07/2017 |
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Autoria: |
BIONE, N. C. P.; PAGLIARINI, M. S.; ALMEIDA, L. A. de. |
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Título: |
A new and distinctive male-sterile, female-fertile desynaptic mutant in soybean (Glycine max). |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Hereditas, Lund, v. 136, n. 2, p. 97-103, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
A spontaneous desynaptic mutation, affecting only microsporogenesis and causing pollen sterility, has been detected in BR97-12986H, a line of the official Brazilian soybean breeding program. In this male-sterile, female-fertile mutant, up to metaphase II, the meiotic behavior was similar to that described for the st series of synaptic mutants previously reported in soybean. Besides many univalents, few or total absence of bivalents were recorded in diakinesis. Bivalents presented one or two terminal chiasmata, while univalents retained the sister chromatid cohesion. Bivalents and most univalents congregated at the equatorial metaphase plate, although univalents frequently migrated to the poles prematurely. Laggards resulting from delay in chiasmata terminalization were also recorded. Distinctly different in their behavior from st series soybean mutants, telophase I-originated micronuclei of different sizes organized their own spindle in the second division. This behavior contributed towards an increase in genome fractionation. Several microspores and microcytes of different sizes were recorded at the end of meiosis. Pollen sterility was estimated at 91.2 %. Segregation ratio for sterility in this line and its progenies reached 3:1. Allelism tests with st series of synaptic mutants are in progress. The importance of male-sterile, female-fertile mutations for soybean breeding programs is discussed. |
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Thesagro: |
Melhoramento; Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162184/1/BIONE-et-al-2002-Hereditas.pdf
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Marc: |
LEADER 01904naa a2200169 a 4500
001 1468651
005 2017-07-28
008 2002 bl uuuu u00u1 u #d
100 1 $aBIONE, N. C. P.
245 $aA new and distinctive male-sterile, female-fertile desynaptic mutant in soybean (Glycine max).
260 $c2002
520 $aA spontaneous desynaptic mutation, affecting only microsporogenesis and causing pollen sterility, has been detected in BR97-12986H, a line of the official Brazilian soybean breeding program. In this male-sterile, female-fertile mutant, up to metaphase II, the meiotic behavior was similar to that described for the st series of synaptic mutants previously reported in soybean. Besides many univalents, few or total absence of bivalents were recorded in diakinesis. Bivalents presented one or two terminal chiasmata, while univalents retained the sister chromatid cohesion. Bivalents and most univalents congregated at the equatorial metaphase plate, although univalents frequently migrated to the poles prematurely. Laggards resulting from delay in chiasmata terminalization were also recorded. Distinctly different in their behavior from st series soybean mutants, telophase I-originated micronuclei of different sizes organized their own spindle in the second division. This behavior contributed towards an increase in genome fractionation. Several microspores and microcytes of different sizes were recorded at the end of meiosis. Pollen sterility was estimated at 91.2 %. Segregation ratio for sterility in this line and its progenies reached 3:1. Allelism tests with st series of synaptic mutants are in progress. The importance of male-sterile, female-fertile mutations for soybean breeding programs is discussed.
650 $aMelhoramento
650 $aSoja
700 1 $aPAGLIARINI, M. S.
700 1 $aALMEIDA, L. A. de
773 $tHereditas, Lund$gv. 136, n. 2, p. 97-103, 2002.
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/05/2001 |
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Data da última atualização: |
23/05/2001 |
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Autoria: |
CARVALHO, P. E. R. |
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Afiliação: |
Carvalho, P. E. R., pesquisador da EMBRAPA-CNPF. |
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Título: |
Gallesia gorarema (Vellozo) Moquin: pau-d'alho. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
In: CARVALHO, P.E.R. Especies florestais brasileiras: recomendacoes silviculturais, potencialidades e uso da madeira. Colombo: EMBRAPA-CNPF / Brasilia: EMBRAPA-SPI, 1994. p.251-254. |
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Idioma: |
Português |
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Palavras-Chave: |
Distribuicao natural; Gallesia gorarema (Vellozo) Moquin; Growth; Natural distribution; Pau-d'alho; Production; Products; Seed; Uses; Uso. |
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Thesagro: |
Botânica; Clima; Crescimento; Ecologia; Fenologia; Madeira; Muda; Produção; Reprodução; Semente; Silvicultura; Solo; Taxonomia. |
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Thesaurus NAL: |
botany; climate; ecology; phenology; reproduction; seedlings; silviculture; soil; taxonomy; wood. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01305naa a2200505 a 4500
001 1301484
005 2001-05-23
008 1994 bl uuuu u00u1 u #d
100 1 $aCARVALHO, P. E. R.
245 $aGallesia gorarema (Vellozo) Moquin$bpau-d'alho.
260 $c1994
650 $abotany
650 $aclimate
650 $aecology
650 $aphenology
650 $areproduction
650 $aseedlings
650 $asilviculture
650 $asoil
650 $ataxonomy
650 $awood
650 $aBotânica
650 $aClima
650 $aCrescimento
650 $aEcologia
650 $aFenologia
650 $aMadeira
650 $aMuda
650 $aProdução
650 $aReprodução
650 $aSemente
650 $aSilvicultura
650 $aSolo
650 $aTaxonomia
653 $aDistribuicao natural
653 $aGallesia gorarema (Vellozo) Moquin
653 $aGrowth
653 $aNatural distribution
653 $aPau-d'alho
653 $aProduction
653 $aProducts
653 $aSeed
653 $aUses
653 $aUso
773 $tIn: CARVALHO, P.E.R. Especies florestais brasileiras: recomendacoes silviculturais, potencialidades e uso da madeira. Colombo: EMBRAPA-CNPF / Brasilia: EMBRAPA-SPI, 1994. p.251-254.
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Embrapa Florestas (CNPF) |
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