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| Registros recuperados: 28 | |
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| Crispim,Joelson Germano; Rêgo,Elizanilda R; Rêgo,Mailson M; Nascimento,Naysa Flávia F; Barroso,Priscila A. |
| ABSTRACT The objective of this study was to evaluate stigma receptivity and anther dehiscence in three floral development stages in F3 population of ornamental pepper (Capsicum annuum). A total of 162 plants (81 of purple corolla and 81 of white corolla) were used in this study. To analyze the stigma receptivity and anther dehiscence, three floral stages were analyzed: bud, pre-anthesis, and open flower. For each stage, 33 flowers of each phenotypic class were collected. The receptivity of the stigma was detected by dripping hydrogen peroxide solution (3%). For the evaluation of the level of receptivity, scores of 0 to 3 were assigned, varying according to the bubbles percentage found on the stigmatic surface. Scores of 1 to 5 were assigned for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Breeding; Floral biology; Pollination. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400609 |
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| SIGRIST,MARIA R.; SAZIMA,MARLIES. |
| A biologia reprodutiva de Ruellia brevifolia foi estudada em populações naturais do sudeste brasileiro. R. brevifolia é um subarbusto que forma agrupamentos densos em áreas abertas mas sombreadas e floresce o ano todo, produzindo flores casmógamas (CH) e cleistógamas (CL) nas estações úmida e seca, respectivamente. A cleistogamia é do tipo climática, originando sementes no período de maior estresse ambiental. Flores CH são inodoras e possuem corola tubulosa e vermelha, sendo hercogâmicas ou não; apresentam protoginia, antese diurna e duram dois dias. Néctar é o principal recurso floral, sendo produzido em baixa quantidade (5,2 mil ± 2,36) e com concentração de açúcares em torno de 30%. Flores CL assemelham-se a botões jovens de flores CH e apresentam... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floral biology; Herkogamy; Cleistogamy; Ornithophily; Psicophily. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000100006 |
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| CARVALHO,RAQUEL; WEBBER,ANTONIO C.. |
| A biologia floral e a polinização por abelhas Euglossini de uma Annonaceae é descrita pela primeira vez e as adaptações a esse modo de polinização são comparadas às de outras espécies da família, que é predominantemente polinizada por coleópteros. A espécie Unonopsis guatterioides foi estudada em dois fragmentos de mata de terra firme no município de Manaus (AM). As flores são protogínicas e permanecem abertas expondo os estigmas e estames durante a antese que ocorre entre dois dias. São visitadas por machos de Eulaema bombiformis (Euglossini) que coletam o odor o qual se assemelha ao de "capim cidreira" (Andropogum nardus L.). Visitas de abelhas Meliponidae e coleópteros Chrysomelidae também foram registradas. Unonopsis guatterioides apresenta dicogamia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annonaceae; Floral biology; Pollination; Euglossini; Amazon. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000400008 |
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| Castro,Cibele Cardoso de; Oliveira,Paulo Eugênio Alves Macedo de; Pimentel,Rejane Magalhães de Mendonça. |
| The family Rubiaceae comprises a wide spectrum of floral mechanisms and two of them seem to be common in certain groups, e.g., distyly in Rubioidae and styllar pollen in Ixoroidae. These mechanisms include herkogamy, which is interpreted as a strategy that avoids self-pollination. This is the first report on the reproductive biology of Chiococca alba, a species that is widely distributed in America. We studied floral biology and the mating system, which were evaluated through fruit set comparisons after controlled crosses (self- and cross-pollinations and test for apomixis), as well as through the evaluation of pollen tube growth resulting from these controlled crosses. Flowers of C. alba are herkogamous, cream, protandrous and lasted for two days. No... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Rain Forest; Breeding system; Chiococca; Floral biology; Herkogamy; Pollination; Rubiaceae. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000200014 |
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| PIEDADE-KIILL,LÚCIA HELENA; RANGA,NEUSA TARODA. |
| Aspectos da fenologia, biologia da polinização e reprodução de Jacquemontia multiflora foram estudados na Fazenda Catalunha, Santa Maria da Boa Vista-PE. J. multiflora é uma liana anual, que apresenta floração do tipo cornucópia, com pico desta fenofase no bimestre março/abril, que corresponde ao final da estação chuvosa. As flores estão reunidas em cimeiras que apresentam eixo principal desenvolvido, expondo as flores acima da folhagem. As flores são raso-campanuladas, azuis, inodoras e secretam pequenas quantidades de néctar. A antese é diurna, ocorrendo por volta da 5:30h., e a duração das flores é de aproximadamente nove horas, podendo ser consideradas como efêmeras. Abelhas Apidae e Halictidae são os visitantes mais frequentes. Apis mellifera e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floral biology; Reproductive system; Jacquemontia multiflora. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000100004 |
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| Maués,Márcia Motta; Oliveira,Paulo Eugênio A. M. de; Kanashiro,Milton. |
| Jacaranda copaia (Aubl.) D. Don is a pioneer tree widespread in the Brazilian Amazon, usually found colonizing forest gaps and altered areas, and the forest fragment edges. This study investigated aspects of the floral biology, breeding system and pollinators of J. copaia trees. Flowering lasts from August to November, during the low rainfall period extending up to four weeks per tree and 3-4 months for the population as a whole, characterizing a cornucopia flowering pattern. The fruit set ends in the beginning of the rainy season, with wind dispersed winged seeds. Fruit set from open pollination was 1.06% (n = 6,932). Hand pollination using self-pollen (n = 2,099) did not set fruits. Cross-pollination resulted in 6.54% fruit set (n = 2,524), representing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bees; Floral biology; Late-acting self-incompatibility (LSI); Phenology; Pollinators. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300015 |
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| Koschnitzke,Cristiana; Sazima,Marlies. |
| (Biologia floral de cinco espécies de Passiflora L. (Passifloraceae) em mata semidecídua). O estudo da biologia floral de cinco espécies de Passiflora foi feito em uma mata de planalto em Campinas, São Paulo. Passiflora alata, P. amethystina e P. miersii apresentam flores de cor púrpura a violeta e corona variegada. As flores são diurnas, perfumadas, autoincompatíveis e polinizadas por abelhas de grande porte. Passiflora amethystina e P. miersii diferem de P. alata por apresentarem filamentos livres no opérculo, que em P. alata é horizontal e denticulado. Estas diferenças no opérculo promovem comportamentos característicos das abelhas durante as visitas. Passiflora suberosa possui flores verde-amareladas e opérculo plicado. As flores são diurnas, inodoras,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passiflora; Floral biology; Bee; Wasp and moth pollination. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200002 |
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| BARROS,MARILUZA GRANJA. |
| The pollination ecology and breeding systems of Tabebuia aurea (Manso) Benth. & Hook., and T. ochracea (Cham.) Standl. were investigated in an area of cerrado vegetation in the Federal District of Brazil. These species occur sympatrically, flower massively and synchronously for a month, during the dry season (July to September). Both have diurnal anthesis, with similar floral structures, a yellow tubular corolla and produce nectar. Fourteen species of bees visited both Tabebuia species, but, only three Centris species and Bombus morio, were considered potential pollinators, because of their high frequency on the flowers and their efficiency in carrying pollen. Tests on the breeding systems of T. aurea and T. ochracea demonstrated that boths species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding systems; Floral biology; Synchrony of flowering. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300003 |
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| ARENAS-DE-SOUZA,MAICON DOUGLAS; ROSSI,ANA APARECIDA BANDINI; VARELLA,TATIANE LEMOS; SILVEIRA,GREICIELE FARIAS DA; SOUZA,SÉRGIO ALESSANDRO MACHADO. |
| ABSTRACT Theobroma subincanum (cupuí) is a fruit species native to the Amazon region. Fruits are enjoyed by local people and consumed both as fresh fruit such as juice, nectar or soft drinks. Reproductive biology studies provide contributions to conservation strategies and plant improvement. The present study aimed to analyze the stigmatic receptivity and pollen viability of T. subincanum. This study was developed in a forest fragment located in the urban perimeter of the municipality of Alta Floresta, MT. In the flowering period, flower buds or flowers were collected in seven different times, as follows: 10 pm, 02 am, 06 am, 10 am, 2 pm, 6 pm, and 10 pm. Pollen viability was estimated by reactive Alexander (1969) and stigmatic receptivity using 3%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cupui; Pollen; Fertilization; Fructification; Floral biology. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400201 |
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| Lage,Laís Alves; Krause,Willian; Silva,Celice Alexandre; Dias,Daianny Correia; Ambrósio,Moisés; Cobra,Simone Santos de Oliveira. |
| Abstract This study aimed to provide information on the biology and floral resources, stigmatic receptivity and viability of pollen grains during rainy season and dry season, and to evaluate the efficiency of natural and artificial pollination on quality of fruits of eight passion fruit cultivars sourced in Tangará da Serra - MT. Five commercial cultivars and three populations of the genetic improvement program of the sour passion fruit from the Universidade do Estado de Mato Grosso were evaluated. The climatic conditions of the rainy season favored the greater development of the floral pieces. The sugar concentration in the nectar presented higher averages in the rainy season, in all cultivars, except for FB 200. The climatic conditions of the dry season... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floral biology; Climate; Passiflora edulis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300601 |
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| Gottsberger,Gerhard. |
| Flowers of Annonaceae are characterized by fleshy petals, many stamens with hard connective shields and numerous carpels with sessile stigmas often covered by sticky secretions. The petals of many representatives during anthesis form a closed pollination chamber. Protogynous dichogamy with strong scent emissions especially during the pistillate stage is a character of nearly all species. Scent emissions can be enhanced by thermogenesis. The prevailing reproductive system in the family seems to be self-compatibility. The basal genus Anaxagorea besides exhibiting several ancestral morphological characters has also many characters which reappear in other genera. Strong fruit-like scents consisting of fruit-esters and alcohols mainly attract small... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floral biology; Pollination; Cantharophily; Dichogamy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500004 |
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| Vitali,Maria de Jesus; Dutra,João Clovis Stanzani; Machado,Vera Lígia Letízio. |
| A study of the reproductive biology of B. chinensis (L.) DC. (Iridaceae) was realized comprising floral biology and breeding systems. The floral biology studies included analyses of nectar production, occurence of osmophores, corolla pigments, ultraviolet reflexion and absortion patterns, viability of pollen, pollinators and flower visitors. The breeding systems were studied taking into account the results of manual pollinators tests. B. chinensis is self-compatible bul cross-pollination is more frequent. The effective pollinators are Plebeia droryana (Friese, 1906) (45,7%), Trigona spinipes (Fabricius, 1793) (27,3%), Tetragonisca angustula (Latreille, 1811) (9,3%). Others insects visitors are considered nectar and pollen thieves. The flowering begins... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Belamcanda chinensis; Pollination; Insect visitors; Floral biology; Reproductive biology. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200003 |
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| Registros recuperados: 28 | |
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