Fontes e doses de giberelina no desempenho de arroz anão em biotestes

Autor: Martins, Raphael Gonçalves, e Castro, Paulo Roberto de Camargo, Martins, Maria Bernadete Gonçalves, Silva, João Marcelo, Araujo, Diego Kitahara
Jazyk: portugalština
Rok vydání: 2012
Předmět:
Zdroj: Comunicata Scientiae; Vol. 3 No. 4 (2012); 306-309
Comunicata Scientiae; v. 3 n. 4 (2012); 306-309
ISSN: 2176-9079
2177-5133
Popis: Mutant of dwarf rice (Oryza sativa L.) were treated with three different concentrations of gibberellicacid originated from two sources (Gibberellin and Pro-Gibb) and submitted to the determinationof bigger height, in relation to the soil leveI. Mensurations were realized in each seven days atgreenhouse conditions under mean temperature of 25°C. lt was concluded that concentrations of 10mg L-1 of gibberellin originated from Pro-Gibb or Gibberellin was enough to promote a differentiatedperformance of the test plant. For the study of leaf anatomy Pro-Gibb presented, under all testedconcentration, increase of mesophyll thickness in relation to Gibberellin. In this analysis, source andinteraction between source and concentration applied promoted significant variations betweenthe mean data.
Plantas mutantes de arroz anão (Oryza sativa L.) foram tratadas com três diferentes concentraçõesde ácido giberélico originários de duas fontes (Gibberellin e Pro-Gibb) e submetidas à determinaçãoda maior altura, em relação ao nível do solo. As mensurações foram realizadas a cada 7 dias emcasa de vegetação à temperatura ambiente média de 25°C. Concluiu-se que a concentraçãode 10 mg L-1 de giberelina proveniente de Pro-Gibb ou Gibberellin mostrou-se suficiente paracausar o desempenho diferenciado da planta-teste; porém, para o estudo da anatomia foliar, Pro-Gibb apresentou, para todas as concentrações testadas, aumento na espessura do mesofilo emrelação a Gibberellin. Nesta análise, fonte e interação entre a fonte e a concentração aplicadapromoveram variações significativas entre as médias. Gibberellin sources and doses on development of dwarf rice in biotestsMutant of dwarf rice (Oryza sativa L.) were treated with three different concentrations of gibberellicacid originated from two sources (Gibberellin and Pro-Gibb) and submitted to the determinationof bigger height, in relation to the soil leveI. Mensurations were realized in each seven days atgreenhouse conditions under mean temperature of 25°C. lt was concluded that concentrations of 10mg L-1 of gibberellin originated from Pro-Gibb or Gibberellin was enough to promote a differentiatedperformance of the test plant. For the study of leaf anatomy Pro-Gibb presented, under all testedconcentration, increase of mesophyll thickness in relation to Gibberellin. In this analysis, source andinteraction between source and concentration applied promoted significant variations betweenthe mean data.
Databáze: OpenAIRE
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