Diurnal and Nocturnal Pollination of Catalpa speciosa (Bignoniaceae)

Stephenson, Andrew G.; Thomas, Wm. Wayt

doi:10.2307/2418262

Cited by 56 publications

(46 citation statements)

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“…A. triplinervia and J. decurrens were possibly self-incompatible as there was no fruit production after self-pollination (Table 2). Self-incompatibility seemed to be very frequent in Bignoniaceae (Bawa 1974, Stephenson and Thomas 1977, Petersen et al 1982, Bertin and Sullivan 1988, Gibbs and Bianchi 1993, 1999, James and Knox 1993, Bittencourt Jr. and Semir, 2004. Thus, the studied species could be considered as functionally allogamic, which is common among Neotropical Bignoniaceae (Gentry 1990).…”

Section: Resultsmentioning

confidence: 94%

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

Yanagizawa

Maimoni-Rodella

2007

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 94%

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

Yanagizawa

Maimoni-Rodella

2007

Braz. arch. biol. technol.

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“…nana contrasts with several other systems in which changes in corolla color or other floral characteristics apparently occur as the result of pollination (Dunn, 1956;Horovitz, 1969;Estes and Brown, 1973;Stephenson and Thomas, 1977;Wainwright, 1978;Silberglied, 1979). Changes can be triggered by such events as the manipulation of flower parts by a pollinator or the growth of pollen tubes in the style (Dunn, 1956;Harrison and Arditti, 1976;Wainwright, 1978;Gori, 1983).…”

Section: Changes In Floral Characteristics-mentioning

confidence: 99%

“…The finding that flower color change in some species is actually caused by a visit from a pollinator (Dunn, 1956;Harrison and Arditti, 1976;Wainwright, 1978) supports this explanation. That floral color change occurs as a consequence of pollination or at a time when the stigma is no longer receptive has also been suggested for a variety of species for which no direct experimental evidence is available (Dunn, 1956;Horovitz, 1969;Estes and Brown, 1973;Stephenson and Thomas, 1977;Wainwright, 1978;Silberglied, 1979).…”

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confidence: 92%

CHANGES IN COROLLA COLOR AND OTHER FLORAL CHARACTERISTICS IN CRYPTANTHA HUMILIS (BORAGINACEAE): CUES TO DISCOURAGE POLLINATORS?

Casper

Pine

1984

Evolution

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“…Os experimentos de autopolinização manual em A. conjugata revelaram a presença de autoincompatibilidade, já registrada para outras espécies de Bignoniaceae (Bawa 1974;Stephenson & Thomas 1977;Stephenson 1979;Bertin 1982;Bertin & Sullivan 1988;Vieira et al 1992;Sampaio & Almeida 1995).…”

Section: Discussionunclassified

“…O referido autor, em seus estudos sobre padrões fenológicos de floração, observou e descreveu cinco padrões distintos para as Bignoniaceae da América Central (posteriormente utilizados por diversos autores, para outros grupos vegetais), concluindo que a alta diversidade dessas espécies parece estar relacionada aos diferentes padrões fenológicos apresentados. Paralelamente aos trabalhos de Gentry, destacam-se, ainda, estudos de biologia da reprodução (Vieira et al 1992;GobattoRodrigues & Stort 1992), estudos sobre o sistema de auto-incompatibilidade (Gibbs & Bianchi 1993;1999;Bittencourt Jr. et al 2003), estudos sobre nectários extraflorais (Elias & Gelband 1975;1976;Elias & Prance 1978;Elias 1983) e estudos sobre polinização (Barrows 1977;Whitham 1977;Stephenson & Thomas 1977;Bertin 1982;Barros 2001).…”

Section: Introductionunclassified

Biologia floral e polinização de Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae)

2005

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RESUMO -(Biologia floral e polinização de Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae)). O trabalho aborda a biologia floral, a atividade forrageira dos visitantes florais (polinizadores e pilhadores), os eventos fenológicos e o sistema de reprodução de Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae), em área de vegetação de restinga, município de Maricá, Rio de Janeiro, no período 1997 a 2000. A espécie estudada tem flores com antese diurna, lilases, tubulosas, hermafroditas, odoríferas e oferecem néctar como recurso floral. O néctar é secretado por um disco localizado na base do gineceu e é acumulado em câmara nectarífera. Os grãos de pólen são liberados gradativamente, prolongando-se a fase de doação de pólen. As abelhas Euglossa cordata Linnaeus, Centris analis Fabricius e C. tarsata Smith são os polinizadores da espécie. Destaca-se pilhagem primária de néctar, por abelhas, e secundária, por borboletas e beija-flor. A espécie é auto-incompatível, apresentando baixos índices de formação de frutos em condições naturais (Frutos/Flores = 12,2%). Foi registrado padrão de floração "cornucópia", entre os meses de dezembro a março (estação quente/chuvosa), com pico em janeiro. As sementes são anemocóricas e liberadas gradativamente na estação fria e seca.Palavras-chave: restinga, biologia floral, pilhadores de néctar, sistema de reprodução, fenologia, melitofilia ABSTRACT -(Floral and pollination biology of Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae)). This work deals with the floral biology, the foraging activities of floral visitors (pollinators and robbers), phenology and reproductive system of Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae) in the "restinga" of Maricá, Rio de Janeiro, Brazil, from 1997 to 2000. The flowers display daytime anthesis and last only one day. These attractive pink flowers are tubular, hermaphroditic, odoriferous and produce nectar as the floral reward. The nectar is secreted by a nectariferous disk concealed within a chamber. The pollen grains are gradually released throughout anthesis, extending the pollen presentation phase. The bees Euglossa cordata Linnaeus, Centris analis Fabricius and C. tarsata Smith are the pollinator species. Primary and secondary nectar pilferage by several bees, butterflies and a hummingbird is found in A. conjugata. The species is selfincompatible and has low fruit set (Fruit/Flower = 12.2%). Flowering of A. conjugata lasts from December to March (hot, rainy season) with a peak in January. The seeds are anemocoric and dispersal peaks in the cold, dry season.

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Diurnal and Nocturnal Pollination of Catalpa speciosa (Bignoniaceae)

Cited by 56 publications

References 0 publications

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

CHANGES IN COROLLA COLOR AND OTHER FLORAL CHARACTERISTICS IN CRYPTANTHA HUMILIS (BORAGINACEAE): CUES TO DISCOURAGE POLLINATORS?

Biologia floral e polinização de Arrabidaea conjugata (Vell.) Mart. (Bignoniaceae)

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