|
|
|
|
| |
|
|
| Custódio,Luciana Nascimento; Carmo-Oliveira,Renata; Mendes-Rodrigues,Clesnan; Oliveira,Paulo Eugênio. |
| The ability of plants to generate fertile offspring is influenced by morpho-physiological and ecological factors. Hence, reproductive success is directly linked to factors affecting quantity and quality of their progeny. In the Cerrado (savanna) of Brazil, the Vochysiaceae is a widely distributed and ecologically important family. Factors affecting pre-dispersal seed predation and abortion were studied for populations of Callisthene fasciculata, C. major, Qualea multiflora and Q. parviflora. To characterize differences between genera, as well as among species, study areas, and individuals, we quantified pre-dispersal seed predation and abortion. Differences of seed abortion among the species were related to intrinsic reproductive features and not to area... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed set; Abortion; Predation; Beetles; Neotropics; Savanna; Cerrado. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300002 |
| |
|
|
| Mendes-Rodrigues,Clesnan; Araújo,Francielle Paulina de; Barbosa-Souza,Cláudia; Barbosa-Souza,Valéria; Ranal,Marli A.; Santana,Denise Garcia de; Oliveira,Paulo Eugênio. |
| Species with mostly asexual reproduction are interesting subjects for germination studies since variation would be more easily linked to environmental factors. Miconia ferruginata DC. is an apomictic treelet in Brazilian cerrado areas on rocky outcrops. Germination of seeds collected from individuals occurring in the Serra de Caldas Novas State Park, Goiás, was studied in three experiments under controlled conditions. Germination characteristics differed among individuals and were correlated with altitude and soil Al content. Seeds from plants growing at lower altitudes, with lower soil aluminium content, presented malformed seeds with absence of embryo which rendered lower, but better synchronized germination. The nested analysis showed that from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitudinal gradient; Campo rupestre; Cerrado; Dormancy; Tropical savanna. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100009 |
| |
|
| |
|
|
|
