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	Provedor de dados Acta Botanica (2) Autor Daibes,Luís Felipe (2) Fidelis,Alessandra (2) Gorgone-Barbosa,Elizabeth (1) Martins,Aline Redondo (1) Novaes,Rafael B. (1) Pivello,Vânia Regina (1) Mais... Palavra-chave African grasses (1) Brazilian Campos grasslands (1) Cerrado grasses (1) Fabaceae (1) Fire temperature (1) Fire-resistance (1) Germination percentage (1) Heat shock experiments (1) Melinis minutiflora (1) Smoke solution (1) Urochloa brizantha (1) Urochloa decumbens (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Ano 2020 (1) 2016 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Fire cues and germination of invasive and native grasses in the Cerrado Acta Botanica Gorgone-Barbosa,Elizabeth; Daibes,Luís Felipe; Novaes,Rafael B.; Pivello,Vânia Regina; Fidelis,Alessandra. ABSTRACT Fire-related cues may enhance seed recruitment in flammable ecosystems and differences in fire-germination responses of invasive vs. native species can drive the invasion process. We evaluated the effects of heat shock and smoke water solution treatment on seed germination of invasive (Melinis minutiflora, Urochloa decumbens, U. brizantha) and native grasses (Axonopus pressus, Aristida setifolia, Gymnopogon foliosus) of the Cerrado. The effect of fire temperature was tested by exposing seeds to heat shock treatments of 60, 100, and 200 °C for one minute, comparing them to untreated seeds. The effect of smoke was tested by soaking seeds for 24-h in an aqueous smoke comparing them to seeds soaked in distilled water. Differences among treatments were... Tipo: Info:eu-repo/semantics/article Palavras-chave: African grasses; Cerrado grasses; Fire temperature; Melinis minutiflora; Smoke solution; Urochloa brizantha; Urochloa decumbens. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100185 To resist or to germinate? The effect of fire on legume seeds in Brazilian subtropical grasslands Acta Botanica Fidelis,Alessandra; Daibes,Luís Felipe; Martins,Aline Redondo. Fire plays an important role in several grassland ecosystems in the world. Fire can trigger germination in several species, by breaking the physical dormancy of their seeds. Thus, we hypothesized that exposure to high temperatures during fire would break seed dormancy and enhance germination. We tested the effect of high temperatures on the germination of six species of legumes from Brazilian subtropical grasslands. We used heat shock experiments with the following treatments: 60, 90, 120 and 150ºC for one minute. Seeds were then placed to germinate for 60 days in 12/12 hours light/dark and 20/30ºC. Germination was generally low for all study species. Most species was not affected by heat shock treatments. However, Stylosanthes montevidensis was the only... Tipo: Info:eu-repo/semantics/other Palavras-chave: Brazilian Campos grasslands; Fabaceae; Fire-resistance; Germination percentage; Heat shock experiments. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100147 Registros recuperados: 2 Primeira ... 1 ... Última

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