|
|
|
|
| |
|
|
| Varassin,Isabela Galarda; Ximenes,Brunna Maria Setti; Moreira,Priscila Ambrósio; Zanon,Mireille Maria Franco; Elbl,Paula; Löwenberg-Neto,Peter; Melo,Gabriel Augusto Rodrigues. |
| A atividade dos polinizadores é afetada pela disponibilidade de recursos. Flores que produzem mais néctar podem ser mais visitadas e assim apresentar maior produção de frutos. O efeito da produção de néctar na atividade dos polinizadores foi testado em duas espécies cultivadas de maracujá, Passiflora alata Curtis e Passiflora edulis Sims, em Morretes, Paraná. Botões foram ensacados e o néctar acumulado das flores foi coletado em intervalos de 1 h. Em P. alata o volume e a concentração de solutos no néctar aumentaram durante o período de antese, associados com o aumento da temperatura. Em P. edulis, o volume aumentou durante o período diurno da antese, e decresceu após as 18 horas. A concentração de solutos no néctar permaneceu constante. A taxa média de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bombus morio; Passiflora alata; Passiflora edulis; Polinização; Xylocopa frontalis. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000100024 |
| |
|
| |
|
|
| Silva,Marcelo Aparecido de Souza; Varassin,Isabela Galarda. |
| ABSTRACT Plant size and clonality are important traits for explaining the reproductive effort of clonal plants. Larger plants can invest more resources into reproduction, and clonality is known to increase reproductive effort. Moreover, reproductive effort is influenced by environmental variation, and so the spatial distribution of plants may affect plant reproductive effort. We investigated the effect of plant size, clonality and spatial distribution on the reproductive effort of Vriesea carinata in the Atlantic Forest in the state of Paraná, Brazil. We marked twenty individual plants and measured their rosette size, biomass and number, as well as rosette reproductive effort (number of flowers, fruits and seeds). We also evaluated the relationship between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clonal growth; Morphological variation; Reproductive effort; RNSM; Vriesea. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300401 |
| |
|
|
| Maia,Fabiano Rodrigo da; Malucelli,Tiago Simões; Varassin,Isabela Galarda. |
| The abundance and distribution of resources for pollinators modulate the reproduction of plants. This study attempted to determine whether and how the fruiting success of Tibouchina trichopoda flowers varies due to plant size, number of flowers produced, distance between individuals and cardinal orientation of the flowers. From July 2009 to February 2010, we conducted monthly evaluations of 21 plants in an area of regenerating forest within the Atlantic Forest biome, located near the municipality of Antonina, in southern Brazil. Floral density was monitored weekly. During the study period, the species bloomed twice: once during the cool, dry season, showing an extended flowering period with scattered flowering individuals; and once during the hot, rainy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resource allocation; Atlantic Rainforest; Plant-pollinator interactions; Population density; Floral longevity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100014 |
| |
|
| |
|
| |
|
|
|
