| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
21/03/1997 |
|
Data da última atualização: |
25/05/2017 |
|
Autoria: |
MAGALHAES, P. C. |
|
Afiliação: |
PAULO CESAR MAGALHAES, CNPMS. |
|
Título: |
Effects of assimilate enhancement on grain filling and carbohydrate and nitrogen partitioning in maize. |
|
Ano de publicação: |
1984 |
|
Fonte/Imprenta: |
1984. |
|
Páginas: |
34 p. |
|
Idioma: |
Inglês |
|
Notas: |
Dissertação (Mestrado) - University of Minnesota, Minneapolis. |
|
Conteúdo: |
Source-sink relationhips is a controversial topic. Some workers assert that grain yield in corn is limited by availability of assimilate during the grain filling period. Others have reported the sink size as the limiting factor. In this research, I studied the effects of assimilate availabilibty on kernel growth rate and final weight by investigating the effects of altered source/sink ratios on soluble sugars, starch and nitrogen content in plant parts of maize. Special attention was given to plant's compensatory response such as soluble carbohydrates and nitrogen redistribution to the grain. Two genotypes: M14 x W64A and Pionner-brand '3780', were grown in field plots at St. Paul, Mn in 1982. The treatment were arranged in a split plot manner in a randomized complete block design of four replicates. The alterations of source/sink ratio consisted of partial kernel removal (removing the tip half of the ear), and thinning by a 50% plant population reduction imposed before and after the onset of linear growth (6 days and 24 days after mid-silking, respectively). M14 x W64A responded to early thinning, as indicated by an extended grain filling period, increased starch content of the kernels and greater final kernel weight. However, kernel growth rate, number of kernels per ear and kernel soluble sugars content were not affected. Thinning and partial kernel removel on both dates increased internode dry weight and soluble sugar content. Kernels removal early enhanced the nitrogen content in the internodes and (...) MenosSource-sink relationhips is a controversial topic. Some workers assert that grain yield in corn is limited by availability of assimilate during the grain filling period. Others have reported the sink size as the limiting factor. In this research, I studied the effects of assimilate availabilibty on kernel growth rate and final weight by investigating the effects of altered source/sink ratios on soluble sugars, starch and nitrogen content in plant parts of maize. Special attention was given to plant's compensatory response such as soluble carbohydrates and nitrogen redistribution to the grain. Two genotypes: M14 x W64A and Pionner-brand '3780', were grown in field plots at St. Paul, Mn in 1982. The treatment were arranged in a split plot manner in a randomized complete block design of four replicates. The alterations of source/sink ratio consisted of partial kernel removal (removing the tip half of the ear), and thinning by a 50% plant population reduction imposed before and after the onset of linear growth (6 days and 24 days after mid-silking, respectively). M14 x W64A responded to early thinning, as indicated by an extended grain filling period, increased starch content of the kernels and greater final kernel weight. However, kernel growth rate, number of kernels per ear and kernel soluble sugars content were not affected. Thinning and partial kernel removel on both dates increased internode dry weight and soluble sugar content. Kernels removal early enhanced the nitrogen ... Mostrar Tudo |
|
Palavras-Chave: |
Assimilacao; Carboidratos; Grain; Maize. |
|
Thesagro: |
Fisiologia; Grão; Milho; Nitrogênio; Zea Mays. |
|
Thesaurus Nal: |
carbohydrates; nitrogen; physiology. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89618/1/Paulo-Cesar-1.pdf
|
|
Marc: |
LEADER 02264nam a2200277 a 4500
001 1474162
005 2017-05-25
008 1984 bl uuuu m 00u1 u #d
100 1 $aMAGALHAES, P. C.
245 $aEffects of assimilate enhancement on grain filling and carbohydrate and nitrogen partitioning in maize.
260 $a1984.$c1984
300 $a34 p.
500 $aDissertação (Mestrado) - University of Minnesota, Minneapolis.
520 $aSource-sink relationhips is a controversial topic. Some workers assert that grain yield in corn is limited by availability of assimilate during the grain filling period. Others have reported the sink size as the limiting factor. In this research, I studied the effects of assimilate availabilibty on kernel growth rate and final weight by investigating the effects of altered source/sink ratios on soluble sugars, starch and nitrogen content in plant parts of maize. Special attention was given to plant's compensatory response such as soluble carbohydrates and nitrogen redistribution to the grain. Two genotypes: M14 x W64A and Pionner-brand '3780', were grown in field plots at St. Paul, Mn in 1982. The treatment were arranged in a split plot manner in a randomized complete block design of four replicates. The alterations of source/sink ratio consisted of partial kernel removal (removing the tip half of the ear), and thinning by a 50% plant population reduction imposed before and after the onset of linear growth (6 days and 24 days after mid-silking, respectively). M14 x W64A responded to early thinning, as indicated by an extended grain filling period, increased starch content of the kernels and greater final kernel weight. However, kernel growth rate, number of kernels per ear and kernel soluble sugars content were not affected. Thinning and partial kernel removel on both dates increased internode dry weight and soluble sugar content. Kernels removal early enhanced the nitrogen content in the internodes and (...)
650 $acarbohydrates
650 $anitrogen
650 $aphysiology
650 $aFisiologia
650 $aGrão
650 $aMilho
650 $aNitrogênio
650 $aZea Mays
653 $aAssimilacao
653 $aCarboidratos
653 $aGrain
653 $aMaize
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
|
Data corrente: |
20/12/2022 |
|
Data da última atualização: |
20/12/2022 |
|
Tipo da produção científica: |
Resumo em Anais de Congresso |
|
Autoria: |
FERNANDES, A. C. V.; LISBOA, P. H. G.; ANDRADE, P. H. M. DE; CAVALLARI, M. M.; VIGNA, B. B. Z.; MALAGO JUNIOR, W.; FAVERO, A. P.; LACAVA, P. T. |
|
Afiliação: |
ANA CAROLINA VASCONCELOS FERNANDES, Universidade Federal de São Carlos; PAULO HENRIQUE GOMES LISBOA, Universidade Federal de São Carlos; PAULO HENRIQUE MARQUES DE ANDRADE, Universidade Federal de São Carlos; MARCELO MATTOS CAVALLARI, CPPSE; BIANCA BACCILI ZANOTTO VIGNA, CPPSE; WILSON MALAGO JUNIOR, CPPSE; ALESSANDRA PEREIRA FAVERO, CPPSE; PAULO TEIXEIRA LACAVA, Universidade Federal de São Carlos. |
|
Título: |
Caracterização de bactérias endofíticas promotoras de crescimento vegetal associadas a Paspalum vaginatum Sw. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
In: Congresso Brasileiro de Recursos Genéticos, 7., 2022. Multifuncionalidade e Qualidade de Vida: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2022. |
|
Idioma: |
Português |
|
Conteúdo: |
O contínuo crescimento da produção de alimentos culmina no aumento do uso de fertilizantes químicos, prejudiciais para o meio ambiente. |
|
Palavras-Chave: |
Bactéria endofítica; Promoção de crescimento vegetal. |
|
Thesaurus NAL: |
Paspalum. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150027/1/CaracterizacaoBacteriasPromotoras.pdf
|
|
Marc: |
LEADER 00997nam a2200229 a 4500
001 2150027
005 2022-12-20
008 2022 bl uuuu u00u1 u #d
100 1 $aFERNANDES, A. C. V.
245 $aCaracterização de bactérias endofíticas promotoras de crescimento vegetal associadas a Paspalum vaginatum Sw.$h[electronic resource]
260 $aIn: Congresso Brasileiro de Recursos Genéticos, 7., 2022. Multifuncionalidade e Qualidade de Vida: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos$c2022
520 $aO contínuo crescimento da produção de alimentos culmina no aumento do uso de fertilizantes químicos, prejudiciais para o meio ambiente.
650 $aPaspalum
653 $aBactéria endofítica
653 $aPromoção de crescimento vegetal
700 1 $aLISBOA, P. H. G.
700 1 $aANDRADE, P. H. M. DE
700 1 $aCAVALLARI, M. M.
700 1 $aVIGNA, B. B. Z.
700 1 $aMALAGO JUNIOR, W.
700 1 $aFAVERO, A. P.
700 1 $aLACAVA, P. T.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
