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Now showing items 31-40 of 69
Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil
(Brazilian Archives of Biology and Technology, 2007-11-01)
Com objetivo de avaliar as estratégias de polinização de espécies de Bignoniaceae, foram estudados a biologia floral e os visitantes florais de cinco espécies, três arbustivas do cerrado (Arrabidaea brachypoda (DC.) Bor., ...
Functional aspects of floral nectar secretion of Ananas ananassoides, an ornithophilous bromeliad from the Brazilian savanna
(Oxford University Press, 2012-06-01)
Several members of Bromeliaceae show adaptations for hummingbird pollination in the Neotropics; however, the relationships between floral structure, nectar production, pollination and pollinators are poorly understood. The ...
Floral biology and late-acting self-incompatibility in Jacaranda racemosa (Bignoniaceae)
(CSIRO Publishing, 2006-01-01)
Breeding-system studies have been conducted with 38 of the approximately 800 species of Bignoniaceae, and self-incompatibility was found in 31 of these. In species for which the site of self-incompatibility barrier was ...
Trait-mediated effects on flowers: Artificial spiders deceive pollinators and decrease plant fitness
(Ecological Soc Amer, 2008-09-01)
Although predators can affect foraging behaviors of oral visitors, rarely is it known if these top-down effects of predators may cascade to plant fitness through trait-mediated interactions. In this study we manipulated ...
Intercellular pectic protuberances in Hymenaea stigonocarpa (Fabaceae, Caesalpinioideae): Occurrence and functional aspects
(Elsevier France-editions Scientifiques Medicales Elsevier, 2008-04-01)
A study of the anatomy and ultrastructural aspects of leaf mesophyll and floral nectaries of Hymenaea stigonocarpa Mart. ex Hayne revealed the presence of intercellular pectic protuberances (IPPs) linking adjacent cells ...
Aspectos da biologia e morfologia da broca do pedúnculo floral do coqueiro, Homalinotus coriaceus (Gyllenhal) (Coleoptera: Curculionidae)
(Sociedade Entomológica do Brasil, 2004-02-01)
A broca do pedúnculo floral do coqueiro, Homalinotus coriaceus (Gyllenhal), é uma praga limitante à produção de coco no Brasil, provocando a queda das flores e dos frutos imaturos. Sua biologia é pouco conhecida o que tem ...
Physico-chemical and harvest time alterations in pineapple fruits Smooth Cayenne caused by paclobutrazol
(Brazilian Archives of Biology and Technology, 2008-02-01)
O objetivo deste trabalho foi avaliar o efeito de um inibidor da diferenciação floral nas características físico-químicas dos frutos do abacaxizeiro, bem como, no período de colheita. Utilizou-se paclobutrazol a 100, 150 ...