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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
01/06/2009 |
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Data da última atualização: |
30/11/2010 |
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Autoria: |
STIEHL-ALVES, E. M.; MARTINS-CORDER, M. P. |
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Afiliação: |
EUDES MARIA STIEHL-ALVES, UFSM; MAISA PIMENTEL MARTINS-CORDER, UFSM. |
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Título: |
Acacia mearnsii (Fabaceae) reproductive biology: pollen tube viability and growth. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 7, n. 1, p. 29-35, June 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The low seed production in Acacia mearnsii De Wild. populations indicates that narrow genetic variability interferes with the reproduction. The viability of polyads of A. mearnsii trees from a seed production area was evaluated through in vitro germination and the colorimeter method. A high mean germination (73%) and low mean pollen tube growth (23%) were observed in the germplasm. Only tree 30 presented 60% germinated polen tubes. The other means were less than 50%. On the other hand, the viability observed by the colorimeter method was high (100% viable polyads in five trees), which indicated that the colorimeter technique overestimated the true viability. This study showed that the germination ability of polyads was influenced by the genotype, contributing to a limited seed formation. |
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Palavras-Chave: |
Acacia mearnsii De Wild; Acácia-negra; Plantas; Variabilidade genética. |
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Thesagro: |
Agricultura; Biotecnologia; Fecundação; Genética; Pólen. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01501naa a2200241 a 4500
001 1049113
005 2010-11-30
008 2007 bl uuuu u00u1 u #d
100 1 $aSTIEHL-ALVES, E. M.
245 $aAcacia mearnsii (Fabaceae) reproductive biology$bpollen tube viability and growth.
260 $c2007
520 $aThe low seed production in Acacia mearnsii De Wild. populations indicates that narrow genetic variability interferes with the reproduction. The viability of polyads of A. mearnsii trees from a seed production area was evaluated through in vitro germination and the colorimeter method. A high mean germination (73%) and low mean pollen tube growth (23%) were observed in the germplasm. Only tree 30 presented 60% germinated polen tubes. The other means were less than 50%. On the other hand, the viability observed by the colorimeter method was high (100% viable polyads in five trees), which indicated that the colorimeter technique overestimated the true viability. This study showed that the germination ability of polyads was influenced by the genotype, contributing to a limited seed formation.
650 $aAgricultura
650 $aBiotecnologia
650 $aFecundação
650 $aGenética
650 $aPólen
653 $aAcacia mearnsii De Wild
653 $aAcácia-negra
653 $aPlantas
653 $aVariabilidade genética
700 1 $aMARTINS-CORDER, M. P.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 7, n. 1, p. 29-35, June 2007.
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Embrapa Agricultura Digital (CNPTIA) |
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