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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
06/03/1998 |
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Data da última atualização: |
06/03/1998 |
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Autoria: |
FELIPPE, G. M.; DALE, J. E. |
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Título: |
The effects of phosphate supply on growth of plants from the Brasilian Cerrado: experiments with seedlings of the annual weed, Bidens gardneri Baker (Compositeae) and the tree, Qualea grandiflora (Mart.) (Vochysiaceae). |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Oecologia, Berlin, v.82, p.81-86, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
Plants of the Cerrado tree species Qualea grandiflora and the annual herb Bidens gardneri were grown from seed in controlled environment rooms at 30/20 C and 12 hour photoperiod. Seedlings were grown in pots or small tubes containing sand and provided with various amounts of mineral solutions based on the formulatin of Hoagland and Arnon but with the phosphate content modified in some cases. In a long-term experiment lasting 213 days, plants supplied with full strength Hoagland's solution all died but plants of Qualea given 1/10 strength solution survived, although they grew very slowly. Low relative growth rates (0.008-0.036 d-1) were also a feature of other experiments with Qualea and calculated rates of net assimilation rate gave values of 3-7 mg CO2 dm-2 h-1. Expansion of the photosynthetic surface proceeded slowly and the cotyledons were the main site of photosynthesis for more than 40 days. The low rates of growth occurred despite significant uptake of phosphorus by young plants and short-term experiments growth was independent of the amount of phosphate supplied and accumulated. In contrast, the values of R found for plants of Bidens reached 0.24 d-1. Growth of young plants was dependent on the external supply of phosphorus, being reduced when this was low and also when it was very high. Growth of the photosynthetic surface was also much more rapid than for Qualea and varied with supply of phosphorus. The results are discussed in the context of the occurrence of species in the Cerrado. MenosPlants of the Cerrado tree species Qualea grandiflora and the annual herb Bidens gardneri were grown from seed in controlled environment rooms at 30/20 C and 12 hour photoperiod. Seedlings were grown in pots or small tubes containing sand and provided with various amounts of mineral solutions based on the formulatin of Hoagland and Arnon but with the phosphate content modified in some cases. In a long-term experiment lasting 213 days, plants supplied with full strength Hoagland's solution all died but plants of Qualea given 1/10 strength solution survived, although they grew very slowly. Low relative growth rates (0.008-0.036 d-1) were also a feature of other experiments with Qualea and calculated rates of net assimilation rate gave values of 3-7 mg CO2 dm-2 h-1. Expansion of the photosynthetic surface proceeded slowly and the cotyledons were the main site of photosynthesis for more than 40 days. The low rates of growth occurred despite significant uptake of phosphorus by young plants and short-term experiments growth was independent of the amount of phosphate supplied and accumulated. In contrast, the values of R found for plants of Bidens reached 0.24 d-1. Growth of young plants was dependent on the external supply of phosphorus, being reduced when this was low and also when it was very high. Growth of the photosynthetic surface was also much more rapid than for Qualea and varied with supply of phosphorus. The results are discussed in the context of the occurrence of speci... Mostrar Tudo |
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Palavras-Chave: |
Bidens gardneri; Brasil; Mineral nutrients; Pau-terra. |
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Thesagro: |
Cerrado; Fósforo; Nutriente Mineral; Qualea Grandiflora. |
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Thesaurus Nal: |
Brazil; phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02311naa a2200253 a 4500
001 1554075
005 1998-03-06
008 1990 bl --- 0-- u #d
100 1 $aFELIPPE, G. M.
245 $aThe effects of phosphate supply on growth of plants from the Brasilian Cerrado$bexperiments with seedlings of the annual weed, Bidens gardneri Baker (Compositeae) and the tree, Qualea grandiflora (Mart.) (Vochysiaceae).
260 $c1990
520 $aPlants of the Cerrado tree species Qualea grandiflora and the annual herb Bidens gardneri were grown from seed in controlled environment rooms at 30/20 C and 12 hour photoperiod. Seedlings were grown in pots or small tubes containing sand and provided with various amounts of mineral solutions based on the formulatin of Hoagland and Arnon but with the phosphate content modified in some cases. In a long-term experiment lasting 213 days, plants supplied with full strength Hoagland's solution all died but plants of Qualea given 1/10 strength solution survived, although they grew very slowly. Low relative growth rates (0.008-0.036 d-1) were also a feature of other experiments with Qualea and calculated rates of net assimilation rate gave values of 3-7 mg CO2 dm-2 h-1. Expansion of the photosynthetic surface proceeded slowly and the cotyledons were the main site of photosynthesis for more than 40 days. The low rates of growth occurred despite significant uptake of phosphorus by young plants and short-term experiments growth was independent of the amount of phosphate supplied and accumulated. In contrast, the values of R found for plants of Bidens reached 0.24 d-1. Growth of young plants was dependent on the external supply of phosphorus, being reduced when this was low and also when it was very high. Growth of the photosynthetic surface was also much more rapid than for Qualea and varied with supply of phosphorus. The results are discussed in the context of the occurrence of species in the Cerrado.
650 $aBrazil
650 $aphosphorus
650 $aCerrado
650 $aFósforo
650 $aNutriente Mineral
650 $aQualea Grandiflora
653 $aBidens gardneri
653 $aBrasil
653 $aMineral nutrients
653 $aPau-terra
700 1 $aDALE, J. E.
773 $tOecologia, Berlin$gv.82, p.81-86, 1990.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
09/10/2017 |
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Data da última atualização: |
09/10/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
POSSER, G. F.; MACHADO, J. R. A.; PARRELLA, R. A. da C.; FONTANELI, R. S.; SANTOS, H. P. dos; GAUZE, J.; ORSO, L. |
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Afiliação: |
UPF; JANE RODRIGUES DE ASSIS MACHADO, CNPMS; RAFAEL AUGUSTO DA COSTA PARRELLA, CNPMS; RENATO SERENA FONTANELI, CNPT; HENRIQUE PEREIRA DOS SANTOS, CNPT; Bolsista; Bolsista. |
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Título: |
Avaliação de genótipos de sorgo sacarino (Sorghum bicolor (L.) Moench.) no norte do Rio Grande do Sul. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: REUNIÃO TÉCNICA ANUAL DO MILHO, 62.; REUNIÃO TÉCNICA ANUAL DO SORGO, 45., 2017, Sertão. Anais... Sertão: Instituto Federal do Rio Grande do Sul; Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2017. p. 148-151. |
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Idioma: |
Português |
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Palavras-Chave: |
Agronomic performance; Desempenho agronômico. |
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Thesagro: |
Etanol; Recurso energético; Sorghum bicolor. |
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Thesaurus NAL: |
Agronomic traits; Energy resources; Ethanol. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/164821/1/Avaliacao-genotipos-3.pdf
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Marc: |
LEADER 00995nam a2200265 a 4500
001 2076960
005 2017-10-09
008 2017 bl uuuu u00u1 u #d
100 1 $aPOSSER, G. F.
245 $aAvaliação de genótipos de sorgo sacarino (Sorghum bicolor (L.) Moench.) no norte do Rio Grande do Sul.$h[electronic resource]
260 $aIn: REUNIÃO TÉCNICA ANUAL DO MILHO, 62.; REUNIÃO TÉCNICA ANUAL DO SORGO, 45., 2017, Sertão. Anais... Sertão: Instituto Federal do Rio Grande do Sul; Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2017. p. 148-151.$c2017
650 $aAgronomic traits
650 $aEnergy resources
650 $aEthanol
650 $aEtanol
650 $aRecurso energético
650 $aSorghum bicolor
653 $aAgronomic performance
653 $aDesempenho agronômico
700 1 $aMACHADO, J. R. A.
700 1 $aPARRELLA, R. A. da C.
700 1 $aFONTANELI, R. S.
700 1 $aSANTOS, H. P. dos
700 1 $aGAUZE, J.
700 1 $aORSO, L.
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Embrapa Milho e Sorgo (CNPMS) |
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