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| Pinto,Patrícia P.; Raposeiras,Ruy; Macedo,Andrea M.; Seldin,Lucy; Paiva,Edilson; Sá,Nadja M.H.. |
| High temperatures can affect the survival, establishment and symbiotic properties of Rhizobium strains. Bean nodulating Rhizobium strains are considered particularly sensitive because on this strains genetic recombinations and/or deletions occur frequently, thus compromising the use of these bacteria as inoculants. In this study R. tropici and R. leguminosarum bv. phaseoli strains isolated from Cerrado soils were exposed to thermal stress and the strains growth, survival and symbiotic relationships as well as alterations in their genotypic and phenotypic characteristics were analyzed. After successive thermal shocks at 45ºC for four hours, survival capacity appeared to be strain-specific, independent of thermo-tolerance and was more apparent in R. tropici... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bean nodulating Rhizobium strains; High temperatures. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000400012 |
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| Menezes,LCCR de; Rossi,MN. |
| After a fire event, germination of seeds with hard coats can be enhanced. In the present study, we investigated whether germination of Mimosa bimucronata (DC.) Kuntze (Fabaceae) seeds, which present hard coats, is increased after fire, even though these trees usually occur in damp areas, where fire is a transient event. Fire events were manipulated in trays filled with soil covered with different amounts of dry grasses, characterizing three treatments: a) 0g (control group); b) 300g, and c) 450g of dry grass. Burning treatments were applied to seeds positioned either on the soil surface or buried in the soil. Germination experiments were carried out at 0-h and 24-h after fire to obtain the germination percentage and the Germination Speed Index (GSI). For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germination; Hard seed coat; High temperatures; Fabaceae. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000200006 |
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| Teixeira,Alexsandro Lara; Souza,Flávio de França; Pereira,Antonio Alves; Oliveira,Antonio Carlos Baião de; Rocha,Rodrigo Barros. |
| Due to high temperatures, practically all coffee farms in the state of Rondonia are of the C. canephora species. Thus, importing arabica coffee from other states becomes necessary for composition of blends, as well as for the specialty or gourmet coffee market. The purpose of this study was to select arabica coffee genotypes that exhibit satisfactory agronomic performance under high temperature conditions. The experiment was conducted in OuroPreto do Oeste, RO, Brazil, with mean annual temperature of 25.8°C and mean annual rainfall of 2300mm year-1. The experiment was composed of 114 arabica coffee genotypes, with 103 progenies and eleven control cultivars, provided by EPAMIG. A randomized block experimental design was used with three replications, spacing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea Arabica L.; High temperatures; Heat tolerance; Maturation cycle. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701228 |
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| Barrios Gómez, Edwin Javier. |
| El presente trabajo de tesis tuvo como objetivo general estudiar la respuesta en el rendimiento y sus componentes, relaciones hídricas y tolerancia a altas temperaturas, de un grupo de cultivares de frijol (Phaseolus vulgaris L.) tipo Flor de Mayo (FM) resistentes y susceptibles a sequía, en condiciones de riego y secano. Se sembraron tres experimentos (primavera-verano de 2007); uno en secano (con dos riegos suplementarios antes de la floración) en Celaya, Guanajuato, México y dos en Montecillo, Texcoco, Estado de México, de los cuales, uno estuvo en riego (aplicación semanal de riego por gravedad) y el otro en secano (a merced de la lluvia durante el ciclo). Se observó que los cultivares FM Noura, FM Anita y FM M38 produjeron mayor (P≤0.05) rendimiento... |
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Palavras-chave: Phaseolus vulgaris L.; Secano; Riego; Relaciones hídricas; Altas temperaturas; Irrigation; Rainfed; Water relationships; High temperatures; Doctorado; Genética. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/231 |
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| Barrios Gómez, Edwin Javier. |
| El presente trabajo de tesis tuvo como objetivo general estudiar la respuesta en el rendimiento y sus componentes, relaciones hídricas y tolerancia a altas temperaturas, de un grupo de cultivares de frijol (Phaseolus vulgaris L.) tipo Flor de Mayo (FM) resistentes y susceptibles a sequía, en condiciones de riego y secano. Se sembraron tres experimentos (primavera-verano de 2007); uno en secano (con dos riegos suplementarios antes de la floración) en Celaya, Guanajuato, México y dos en Montecillo, Texcoco, Estado de México, de los cuales, uno estuvo en riego (aplicación semanal de riego por gravedad) y el otro en secano (a merced de la lluvia durante el ciclo). Se observó que los cultivares FM Noura, FM Anita y FM M38 produjeron mayor (P≤0.05) rendimiento... |
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Palavras-chave: Phaseolus vulgaris L.; Secano; Riego; Relaciones hídricas; Altas temperaturas; Irrigation; Rainfed; Water relationships; High temperatures; Doctorado; Genética. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/231 |
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