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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
23/09/1992 |
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Data da última atualização: |
28/10/2004 |
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Autoria: |
PALMER, J. H.; STEER, B. T. |
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Afiliação: |
Botany School, University of New South Wales, Sidney 2033, Australia. |
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Título: |
Use of the generative area and other inflorescence characters to predict floret and seed numbers in the sunflower. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
In: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas. Mar del Plata : ASAGIR/ISA, 1985. t.1, p.1-6. |
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Idioma: |
Inglês |
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Conteúdo: |
The number of disc florets produced by the sunflower capitulum varies with genotype and according to environmental conditions experienced in the early life of the plant. Observation showed that during the early development ot the capitulum, three fa ctors operate to control the total number oof florets that can be produced; these are the initial number of floret rows appearing in floral stage 5, the extent to which row amalgamation occurs subsequently and the number of florets in each row. An empirical formula has been developed, which incorporates the initial row number and the number of florets in each row and utilises the Fibonacci series to which the row numbers conform. This formula has been used to accurately predict floret numbers for the cultivars, Hysun 30 and Bianca Grande, grown under glasshouse and field conditions. Sampling established that the number of floret rows, the number of florets in each row and the extent of row amalgamation is also linked to the initial size and subsequent persistence of the generative area; the region of floret initiation at the receptacle centre. Daily integration of the surface area of the generative area in capitula of Hysun 30, grown is long or short days and also in capitulum of Hysun 30, SWunfola 68-2, Sirosun 25H and its parent lines, grown in the field, established that a linear relationship exists between the daily integral and total floret number permitting the early prediction of floret number, from which seed number per plant can be estimated. MenosThe number of disc florets produced by the sunflower capitulum varies with genotype and according to environmental conditions experienced in the early life of the plant. Observation showed that during the early development ot the capitulum, three fa ctors operate to control the total number oof florets that can be produced; these are the initial number of floret rows appearing in floral stage 5, the extent to which row amalgamation occurs subsequently and the number of florets in each row. An empirical formula has been developed, which incorporates the initial row number and the number of florets in each row and utilises the Fibonacci series to which the row numbers conform. This formula has been used to accurately predict floret numbers for the cultivars, Hysun 30 and Bianca Grande, grown under glasshouse and field conditions. Sampling established that the number of floret rows, the number of florets in each row and the extent of row amalgamation is also linked to the initial size and subsequent persistence of the generative area; the region of floret initiation at the receptacle centre. Daily integration of the surface area of the generative area in capitula of Hysun 30, grown is long or short days and also in capitulum of Hysun 30, SWunfola 68-2, Sirosun 25H and its parent lines, grown in the field, established that a linear relationship exists between the daily integral and total floret number permitting the early prediction of floret number, from which seed number per p... Mostrar Tudo |
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Palavras-Chave: |
Capitulum; Disc floret; Sunflower. |
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Thesagro: |
Capítulo; Fisiologia; Girassol. |
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Thesaurus Nal: |
Australia; head; physiology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02240naa a2200241 a 4500
001 1454076
005 2004-10-28
008 1985 bl uuuu u00u1 u #d
100 1 $aPALMER, J. H.
245 $aUse of the generative area and other inflorescence characters to predict floret and seed numbers in the sunflower.
260 $c1985
520 $aThe number of disc florets produced by the sunflower capitulum varies with genotype and according to environmental conditions experienced in the early life of the plant. Observation showed that during the early development ot the capitulum, three fa ctors operate to control the total number oof florets that can be produced; these are the initial number of floret rows appearing in floral stage 5, the extent to which row amalgamation occurs subsequently and the number of florets in each row. An empirical formula has been developed, which incorporates the initial row number and the number of florets in each row and utilises the Fibonacci series to which the row numbers conform. This formula has been used to accurately predict floret numbers for the cultivars, Hysun 30 and Bianca Grande, grown under glasshouse and field conditions. Sampling established that the number of floret rows, the number of florets in each row and the extent of row amalgamation is also linked to the initial size and subsequent persistence of the generative area; the region of floret initiation at the receptacle centre. Daily integration of the surface area of the generative area in capitula of Hysun 30, grown is long or short days and also in capitulum of Hysun 30, SWunfola 68-2, Sirosun 25H and its parent lines, grown in the field, established that a linear relationship exists between the daily integral and total floret number permitting the early prediction of floret number, from which seed number per plant can be estimated.
650 $aAustralia
650 $ahead
650 $aphysiology
650 $aCapítulo
650 $aFisiologia
650 $aGirassol
653 $aCapitulum
653 $aDisc floret
653 $aSunflower
700 1 $aSTEER, B. T.
773 $tIn: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas. Mar del Plata : ASAGIR/ISA, 1985. t.1, p.1-6.
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Registro original: |
Embrapa Soja (CNPSO) |
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Nenhum exemplar cadastrado para este documento. |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/04/2015 |
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Data da última atualização: |
09/04/2015 |
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Autoria: |
SOUZA, R. G. |
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Afiliação: |
Rachel Gueller Souza, Aposentada da Embrapa Florestas. |
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Título: |
O sexto elemento: o ser humano. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: SEMINÁRIO SOBRE EDUCAÇÃO AMBIENTAL INTEGRADA PARA MULTIPLICADORES, 2002, Colombo. Os seis elementos: água, ar, solo, flora, fauna, ser humano: trabalhos apresentados. Colombo: Embrapa Florestas, 2003. |
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Páginas: |
p. 207-262 |
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Série: |
(Embrapa Florestas. Documentos, 84). |
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Idioma: |
Português |
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Palavras-Chave: |
Humano. |
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Thesagro: |
Educação Ambiental. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122075/1/13-humano.pdf
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Marc: |
LEADER 00585naa a2200157 a 4500
001 2013159
005 2015-04-09
008 2003 bl uuuu u00u1 u #d
100 1 $aSOUZA, R. G.
245 $aO sexto elemento$bo ser humano.
260 $c2003
300 $ap. 207-262
490 $a(Embrapa Florestas. Documentos, 84).
650 $aEducação Ambiental
653 $aHumano
773 $tIn: SEMINÁRIO SOBRE EDUCAÇÃO AMBIENTAL INTEGRADA PARA MULTIPLICADORES, 2002, Colombo. Os seis elementos: água, ar, solo, flora, fauna, ser humano: trabalhos apresentados. Colombo: Embrapa Florestas, 2003.
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Registro original: |
Embrapa Florestas (CNPF) |
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