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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
24/09/1992 |
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Data da última atualização: |
29/10/2004 |
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Autoria: |
UNGARO, M. R. G.; NOGUEIRA, S. S.; ARRUDA, M. B. |
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Afiliação: |
Instituto Agronomico do Estado de Sao Paulo, P.O.Box 28, Campinas, SP. Brazil. |
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Título: |
Growth analysis of 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.61-66. |
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Idioma: |
Inglês |
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Conteúdo: |
A growth analysis study on the effects of two contrasting environments on the yield of field grown sunflower (Helianthus annuus L.) cultivated in Campinas, Sao Paulo State, Brazil, was undertaken. Accumulation of dry matter, NAR, RGR, LAI, LAD, LAR were determined in two diferent seasons of cultivation, in a randomized experimental design with 5 replications. Higher values for those parameters were obtained in the wet season. Althoug total seed weight in the wet season was higher, the difference between seed yield of wet and dry season was only about 400 kg/ha probably due to the excess of rain and cloudy days during flowering period in the wet season, leading to an increase of empty seeds and decrease in photosynthetic level. The plant grown in the dry seasonwas much more efficient because it allocated less for growing, concentrating the efforts in seed yield. The earlier leaf senescence observed in the dry season was responsible for the greater decrease in NAR. Both LAI and LAD give higher values in the wet season, at flowering. Regression analysis showed good fit to all parameters studied, except for NAR in the dry season. |
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Palavras-Chave: |
Brasil; Growth; Sao Paulo; Sunflower. |
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Thesagro: |
Crescimento; Fisiologia; Floração; Girassol. |
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Thesaurus Nal: |
Brazil; flowering; physiology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01863naa a2200277 a 4500
001 1455108
005 2004-10-29
008 1985 bl uuuu u00u1 u #d
100 1 $aUNGARO, M. R. G.
245 $aGrowth analysis of sunflower.
260 $c1985
520 $aA growth analysis study on the effects of two contrasting environments on the yield of field grown sunflower (Helianthus annuus L.) cultivated in Campinas, Sao Paulo State, Brazil, was undertaken. Accumulation of dry matter, NAR, RGR, LAI, LAD, LAR were determined in two diferent seasons of cultivation, in a randomized experimental design with 5 replications. Higher values for those parameters were obtained in the wet season. Althoug total seed weight in the wet season was higher, the difference between seed yield of wet and dry season was only about 400 kg/ha probably due to the excess of rain and cloudy days during flowering period in the wet season, leading to an increase of empty seeds and decrease in photosynthetic level. The plant grown in the dry seasonwas much more efficient because it allocated less for growing, concentrating the efforts in seed yield. The earlier leaf senescence observed in the dry season was responsible for the greater decrease in NAR. Both LAI and LAD give higher values in the wet season, at flowering. Regression analysis showed good fit to all parameters studied, except for NAR in the dry season.
650 $aBrazil
650 $aflowering
650 $aphysiology
650 $aCrescimento
650 $aFisiologia
650 $aFloração
650 $aGirassol
653 $aBrasil
653 $aGrowth
653 $aSao Paulo
653 $aSunflower
700 1 $aNOGUEIRA, S. S.
700 1 $aARRUDA, M. B.
773 $tIn: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas. Mar del Plata: ASAGIR/ISA, 1985. t.1, p.61-66.
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 1 | |
| 1. |  | ARRUDA, M. B.; PROENÇA, C. E. B.; RODRIGUES, S. C.; CAMPOS, R. N.; MARTINS, R. C.; MARTINS, E. de S. Ecorregiões, unidades de conservação e representatividade ecológica do bioma Cerrado. In: SANO, S. M.; ALMEIDA, S. P. de; RIBEIRO, J. F. (Ed.). Cerrado: ecologia e flora. Brasília, DF: Embrapa Informação Tecnológica: Planaltina, DF: Embrapa Cerrados, 2008. cap. 8, p. 229-272.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 1 | |
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