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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
23/04/1997 |
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Data da última atualização: |
23/04/1997 |
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Autoria: |
KLEIN, A. L.; ZAIDAN, L. B. P.; FELIPPE, G. M. |
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Título: |
Flowering and heterophylla in Bidens gardneri Baker. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Revista Brasileira de Botanica, v.15, n.2, p.139-144, 1992. |
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Idioma: |
Inglês |
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Conteúdo: |
Plant development was studied, in glasshouse conditions, under mine photoperiodic treatment (8h, 8h+NB (night break), 10h, 12h, 14h, 16h, 18h, 20h, and 24h), using forest or cerrado soil. The photoperiodic behaviour of B. gardneri was confirmed and flowering only place under 12h, 14h, 16h, and 8h+NB photoperiods. The species is considered to be stenophotoperiodic or an intermediate-day species. The photoperiodic response was also observed in experiments conducted in two regions of cerrado in the State of Sao Paulo. "Estacao Experimental de Itirapina" and" Reserva Biologica e Estacao Experimental de Moji-Guacu". In these experiments, regardlles of the date of sowing, plants only started to flower between December and March, when the natural photoperiod ranged from about 13h (early December) to 12h (late March), reaching its maximal length (13.6h) in late December. In this species, the occurrence of heterophylly is related to reproduction, i.e., there is the production of a different kind of leaf in plants induced for flowering. No difference was found in the levels of soluble carbohydrate and starch between the two types of leaf. |
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Palavras-Chave: |
Bidens gardneri; Brasil; Heterofilia; Heterophylly; Photoperiodicity. |
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Thesagro: |
Cerrado; Floração; Fotoperiodismo. |
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Thesaurus Nal: |
Brazil; flowering. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01820naa a2200265 a 4500
001 1552755
005 1997-04-23
008 1992 bl --- 0-- u #d
100 1 $aKLEIN, A. L.
245 $aFlowering and heterophylla in Bidens gardneri Baker.
260 $c1992
520 $aPlant development was studied, in glasshouse conditions, under mine photoperiodic treatment (8h, 8h+NB (night break), 10h, 12h, 14h, 16h, 18h, 20h, and 24h), using forest or cerrado soil. The photoperiodic behaviour of B. gardneri was confirmed and flowering only place under 12h, 14h, 16h, and 8h+NB photoperiods. The species is considered to be stenophotoperiodic or an intermediate-day species. The photoperiodic response was also observed in experiments conducted in two regions of cerrado in the State of Sao Paulo. "Estacao Experimental de Itirapina" and" Reserva Biologica e Estacao Experimental de Moji-Guacu". In these experiments, regardlles of the date of sowing, plants only started to flower between December and March, when the natural photoperiod ranged from about 13h (early December) to 12h (late March), reaching its maximal length (13.6h) in late December. In this species, the occurrence of heterophylly is related to reproduction, i.e., there is the production of a different kind of leaf in plants induced for flowering. No difference was found in the levels of soluble carbohydrate and starch between the two types of leaf.
650 $aBrazil
650 $aflowering
650 $aCerrado
650 $aFloração
650 $aFotoperiodismo
653 $aBidens gardneri
653 $aBrasil
653 $aHeterofilia
653 $aHeterophylly
653 $aPhotoperiodicity
700 1 $aZAIDAN, L. B. P.
700 1 $aFELIPPE, G. M.
773 $tRevista Brasileira de Botanica$gv.15, n.2, p.139-144, 1992.
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Embrapa Cerrados (CPAC) |
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| 3. |  | CAMPOS, O. F. de. Criacao de bezerros. Juiz de Fora: NESTLE/EMBRAPA-CNPGL/EPAMIG-Instituto de Laticinios Candido Tostes, 1985. p.55-68. In: CURSO DE PECUARIA LEITEIRA, 3., 1984, Juiz de Fora.| Biblioteca(s): Embrapa Gado de Leite. |
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