|
|
|
| Registros recuperados: 25 | |
|
|
| Texeira, Leandra Regina; UEM; Braccini, Alessandro de Lucca e; UEM; Sperandio, Decio; UEM; Scapim, Carlos Alberto; UEM; Schuster, Ivan; Cooperativa Central de Pesquisa Agricola; Viganó, Joselaine; UEM. |
| O trabalho teve por objetivo avaliar genótipos de soja quanto à tolerância ao estresse hídrico, em substrato embebido com polietileno glicol (PEG 6000). Foram utilizadas sementes armazenadas por um ano, em condições não-controladas de laboratório das cultivares: CD 201, CD 202, CD 204, CD 205, CD 206, CD 208, CD 215, CD 216, Embrapa 48, BRS 132, BRS 184 e BRS 212. As avaliações consistiram em submeter às sementes aos testes de germinação, classificação do vigor das plântulas, comprimento e biomassa seca das plântulas, em condição de estresse hídrico, utilizando dois níveis de potencial osmótico (zero e -0,1 MPa). As cultivares foram agrupadas em diferentes classes de tolerância à seca, em razão da redução percentual nas características avaliadas {% Redução... |
|
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Glycine max (L.) Merrill; Sementes; Potencial osmótico; Germinação; Estresse hídrico 5.01.03.05-9 Melhoramento Vegetal Glycine max (L.) Merrill; Seeds; Osmotic potential; Germination; Water stress. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1731 |
| |
|
| |
|
|
| Palacios,Sofia; Casasnovas,Francisco; Ramirez,María L.; Reynoso,María. M.; Torres,Adriana M.. |
| Studies were conducted to determine the effect of osmotic and matric stress on germination and growth of two Fusarium solani strains, the etiological agent responsible of peanut brown root rot. Both strains had similar osmotic and matric potential ranges that allowed growth, being the latter one narrower. F. solani showed the ability to grow down to -14 MPa at 25 °C in non-ionic modified osmotic medium, while under matric stress this was limited to -8.4 MPa at 25 °C. However, both strains were seen to respond differently to decreasing osmotic and matric potentials, during early stages of germination. One strain (RC 338) showed to be more sensitive to matric than osmotic (non ionic) and the other one (RC 386) showed to be more sensitive to osmotic than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fusarium solani; Germination; Growth; Matric potential; Osmotic potential; Peanut brown root rot; Soilborne pathogen. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300046 |
| |
|
| |
|
|
| Escobar,Hugo; Bustos,Richard; Fernández,Felipe; Cárcamo,Henry; Silva,Herman; Frank,Nicolás; Cardemil,Liliana. |
| We analyzed the mitigating effect of NO3 - and salicylic acid (SA) on the detrimental effects of salt stress by studying the water status of plants of maize grown in Hoagland's medium with NaCl 100 mM as the saline component, to which SA and NO3 - were added in different concentrations as mitigating agents. We evaluated water potential Ψw, osmotic potential Ψs, relative water content (RWC), turgor potential (Ψp ), and the osmotic adjustment (OA) of leaves and roots. SA 0.5 mM mitigated the effects of salinity by increasing the Ψw of the leaf, the Ψsof theroot, the Ψpof the leaf, RWC and OA of the leaf; while NO3 was only effective in combination with SA, mitigating the effects of salinity by increasing... |
| Tipo: Journal article |
Palavras-chave: Nitrate; Osmotic potential; Osmotic adjustment; Salinity mitigation; Salicylic acid; Water potential; Water relative content. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300006 |
| |
| Registros recuperados: 25 | |
|
|
|
