Anatomia floral de Aechmea distichantha Lem. e Canistropsis billbergioides (Schult. &amp; Schult.f) Leme (Bromeliaceae)

Oliveira, Fernanda Maria Cordeiro de; Souza, André Melo de; Corrêa, Brenda Bogatzky Ribeiro; Maeda, Tatiana Midori; Melo-de-Pinna, Gladys Flávia de Albuquerque

doi:10.1590/2236-8906-78/2015

Cited by 6 publications

(1 citation statement)

References 33 publications

(44 reference statements)

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“…Aechmea distichantha has hermaphrodite flowers, 12.4-18 mm in length (Sazima & Sazima 1999;Krömer et al 2006), arranged in an inflorescence composed of spikes of spikelets, with centripetal anthesis at the spike and at the spikelet levels. The anthesis extends for only one day (Sazima & Sazima 1999;Scrok & Varassin 2011) and the nectar produced in the septal nectaries accumulates at the bottom of the flower (Bernardello et al 1991;Buzato et al 2000;Scrok & Varassin 2011;Oliveira et al 2016). Flowers are pollinated by hummingbirds, perching birds, bees, and butterflies (Araujo 1996;Sazima et al 1996;Sazima & Sazima 1999;Taura & Laroca 2001;Krömer et al 2006;Scrok & Varassin 2011;Bueno 2012;Rosa & Monteiro 2012;Chupil 2013;Vizentin-Bugoni et al 2014;Vossler et al 2014), and has been described as partially self-compatible (Scrok & Varassin 2011) or self-incompatible (Bianchi et al 2000), but a few (5%) fruit set was produced following self-pollination.…”

Section: Introductionmentioning

confidence: 99%

Reproductive traits and floral visitors of Aechmea distichantha plants growing in different habitats of a South American xerophytic forest

2018

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Aechmea distichantha, a widely-distributed facultative epiphytic bromeliad species, is present from rainforests to xerophytic forests. At its southernmost distribution (Humid Chaco) it grows in the understory and forest edges. This animal-pollinated bromeliad shows high phenotypic plasticity on its vegetative traits, but there is no information about plasticity on its reproductive traits. Infructescences from shade plants were heavier, had longer rachis, more spikelets, higher number of fruits/spikelet and higher number of seeds/fruit than those from sun plants, but they presented similar number of open flowers. The number of visitation events was similar in both habitats, but more flowers were visited in the sun than in the shade. Flowers were visited by seven species (six insects and one hummingbird). In the sun, the carpenter bee was the most frequent visitor and visited almost all flowers, whereas in the shade different species of visitors attained similar proportion of visits and number of visited flowers. Despite visitation events were similar in both habitats, plants growing in the shade set more seeds/fruit than plants growing in the sun. The higher proportion of visits accomplished by carpenter bees compared to hummingbirds is probably a consequence of the climatic conditions in the austral location of these populations.

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