|
|
|
Registros recuperados: 127 | |
|
| |
|
| |
|
|
Pinheiro,Mardiore; Abrão,Bianca Espindola de; Harter-Marques,Birgit; Miotto,Silvia Teresinha Sfoggia. |
The goal of the present study was to identify plant species used as food source, the floral resources utilized, and the insects that visit flowers in a grassland community in southern Brazil. The study was carried out in an area of one hectare, located in a grassland formation in the Parque Estadual de Itapuã, State of Rio Grande do Sul, Brazil. The flowering pattern was seasonal, and richness and abundance of insects was higher during the period of high resource availability. Flowers of 106 species of angiosperms (73 genera and 34 families) were used as source of floral resources for 219 species (2,767 specimens) of insects. A total of 91.5% of plant species were visited by bees, 53.8% by flies, 34.9% by wasps, 22.6% by butterflies, and 12.3% by beetles.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthophilous insects; Asteraceae; Community ecology; Floral resources; Floral visitors. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300011 |
| |
|
| |
|
|
MONTEIRO,WALKYRIA ROSSI; CASTRO,MARÍLIA DE MORAES; MAZZONI-VIVEIROS,SOLANGE CRISTINA; MAHLBERG,PAUL GORDON. |
The ten-celled biseriate glandular trichome of Stevia rebaudiana (Bert.) Bert.-Asteraceae, found on both leaf surfaces, originates from a single protruding, protodermal cell undergoing an anticlinal division. A subsequent series of periclinal divisions, occurring in acropetal sequence, leads to the formation of the trichome, composed of five pairs of cells, one pair of basal cells, another of stalk cells and three pairs of secretory head cells. Developing, still two-celled glandular trichomes already occur on leaf primordia of the second pair (these primordia measuring, in some cases, ca. 0.30 mm in length), and most of the glandular trichomes are at the mature phase on very young, expanding leaves, for example on those of the sixth pair. The secretory... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stevia rebaudiana; Asteraceae; Glandular trichomes; Ontogeny; Histochemistry. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300013 |
| |
|
|
Werpachowski,Jonas S.; Varassin,Isabela G.; Goldenberg,Renato. |
Neste trabalho foram estudados os sistemas reprodutivos de 22 espécies de Asteraceae ocorrentes na região de Curitiba, PR, tendo em vista investigar a ocorrência de apomixia em representantes subtropicais desta família. Testes de campo mostraram sete espécies produzindo frutos nos tratamentos de apomixia (Calea hispida, Taraxacum officinale, Baccharis cylindrica, B. dracunculifolia, Chromolaena ivaefolia, Trixis verbasciformis e Vernonia discolor), mas apenas as duas primeiras com sementes viáveis. As demais 15 espécies não produziram frutos nos tratamentos de apomixia: Bidens pilosa, B. tinctoria, Campovassouria cruciata, Chromolaena laevigata, Erechtites valerianaefolia, Hypochoeris radicata, H. tweediei, Lactuca scariola, Mutisia coccinea, Senecio... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apomixia; Asteraceae; Partenocarpia; Sistemas reprodutivos. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000300020 |
| |
|
| |
|
| |
|
|
NAKAJIMA,JIMI NAOKI; SEMIR,JOÃO. |
Uma listagem das espécies da família Asteraceae foi realizada no Parque Nacional da Serra da Canastra, situado no sudoeste do estado de Minas Gerais, entre fevereiro de 1994 a janeiro de 1998. Os exemplares coletados encontram-se depositados no herbário da Universidade Federal de Uberlândia, Minas Gerais (HUFU). Na Serra da Canastra, a família Asteraceae é a mais diversa em número de espécies com um total de 215 espécies, pertencentes a 66 gêneros e 11 tribos. As 27 espécies novas que foram descobertas pertencem a gêneros anteriormente monotípicos ou com poucas espécies, tais como Xerxes, Hololepis, Pseudobrickellia e Inulopsis, ou a vários gêneros com um grande número de espécies, tais como Lessingianthus, Chromolaena, Stevia, Mikania, Aspilia, Calea e... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Compositae; Checklist; Serra da Canastra; Minas Gerais. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000400013 |
| |
|
|
Mendonça,Claudia B. F.; Gonçalves-Esteves,Vania; Esteves,Roberto L.; Nunes,Alessandra D.. |
The present work studied the pollinic characteristics of 22 species of Vernonanthura from Southeast Brazil. The pollen grains were acetolysed, measured, described and ilustrated under light, scanning and transmission electron microscopy. Based on the results, Vernonanthura was considered an euripolinic genus as pollen grains presented distinctive characteristics, mainly related to the ornamentation, the size and apertures of the pollen grains, which may serve as a further tool in the delimitation of the species. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Palinology; Southeast Brazil; Vernonanthura; Vernoniinae. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000400004 |
| |
|
|
Matias,Janete R.; Torres,Salvador B.; Leal,Caio C. P.; Leite,Moadir de S.; Carvalho,Sara M. C.. |
ABSTRACT Sunflower is a species with multiple potentialities and its yield can be affected by the presence of soluble salts in the soil, which is common in arid, semi-arid and irrigated regions. The objective of this study was to evaluate the effect of hydropriming as inducer of salinity tolerance in seeds and seedlings of sunflower, hybrid MG305CP. The germination tests were set with four replicates of 50 seeds per treatment, maintained in germinator at 30 ºC for ten days. To simulate salinity, sodium chloride diluted in distilled water was used at electrical conductivities of 0 (control), 4, 8, 12 and 16 dS m-1. On the tenth day, the number of normal seedlings was counted and the length and dry matter of shoots and roots were determined. Seedling fresh... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus; Asteraceae; Physiological conditioning; Abiotic stress; Electrical conductivity. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400255 |
| |
|
|
Hermes,Marcel G.; Köhler,Andreas. |
The flower-visiting social wasps (Hymenoptera, Vespidae, Polistinae) in two areas of Rio Grande do Sul State, southern Brazil. The structure of flower-visiting social wasps' assemblages in the CPCN Pró-Mata of São Francisco de Paula and in the Green Belt of Santa Cruz do Sul, Rio Grande do Sul, are characterized. A total of 879 polistine wasps were collected, of which 475 (11 spp.) in the CPCN and 404 (21 spp.) in the Green Belt, from September 1997 to April 2001 and from September 2001 to April 2004, respectively. Foraging social wasps were observed on flowers of 36 species of angiosperms (20 families) in the Green Belt, and on flowers of 54 species of angiosperms (21 families) in the CPCN. Asteraceae was the most visited plant family on both studied... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria Forest; Asteraceae; Atlantic Forest; Floral preferences; Vespidae. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262006000200008 |
| |
|
| |
|
|
Morales,Mírian Nunes; Köhler,Andreas. |
Objetivou-se investigar a comunidade de Syrphidae, do Cinturão Verde de Santa Cruz do Sul, RS, Brasil, permitindo a obtenção de informações acerca da composição e estrutura desta comunidade, suas preferências florais e interações entre as espécies na utilização de recursos alimentares. Realizaram-se coletas com rede entomológica, entre setembro/2001 a janeiro/2005. Foram capturados 1.283 espécimes de Syrphidae, representados por 88 espécies, distribuídos em 21 gêneros. Eristalinae apresentou o maior número de espécies coletadas, seguida por Syrphinae e Microdontinae. O gênero Palpada Macquart e a espécie P. urotaenia (Curran) foram os mais abundantes. As coletas alcançaram cerca de 80% do que se estima para a área de estudo. Coletaram-se 1.187 sirfídeos... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Interação inseto-planta; Palpada; Visitantes florais. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000100008 |
| |
|
| |
|
|
Escobar-Suárez,Scott; Huanca-Mamani,Wilson; Vargas,Héctor A.. |
Abstract Eugnosta azapaensis Vargas and Moreira, 2015 (Lepidoptera: Tortricidae) is a micromoth native to the Atacama Desert whose larvae induce fusiform galls in shoots of Baccharis salicifolia (Ruiz & Pav.) Pers. (Asteraceae). The presence of this cecidogenous tortricid was previously recorded only from the type locality, the Azapa Valley, Arica Province, northern Chile. However, fusiform galls on shoots of B. salicifolia were recently found in Chaca, another coastal valley of the Atacama Desert. The adults obtained from these galls were preliminarily identified as E. azapaensis based on morphology. Subsequently, to assess an additional source of evidence for the taxonomic identification of E. azapaensis in this new locality, sequences of the DNA... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Asteraceae; Baccharis salicifolia; Chile; DNA barcodes. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000300266 |
| |
|
|
Gordin,Carla Regina Baptista; Marques,Rodolpho Freire; Masetto,Tathiana Elisa; Scalon,Silvana de Paula Quintão. |
O niger (Guizotia abyssinica Cass.) é uma herbácea anual com potencial para produção de biodiesel, porém com poucas informações referentes à qualidade de suas sementes. Com isso, objetivou-se determinar as temperaturas e substratos para a germinação e desenvolvimento inicial de plântulas, além de caracterizar morfologicamente as sementes e plântulas. Foram determinados o peso de mil sementes, grau de umidade, massa, comprimento, largura e espessura das sementes. No teste de germinação foram utilizadas quatro temperaturas constantes sob luz branca constante (15 °C, 20 °C, 25 °C e 30 °C) e uma temperatura alternada (20-30 °C) sob regime de 10 horas de escuro e 14 horas de luz branca para a temperatura mais elevada e dois substratos (entre papel e sobre... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Embebição de sementes; Niger; Temperaturas. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400013 |
| |
|
|
Méndez-Abarca,Felipe; Méndez,Camila F; Mundaca,Enrique A. |
BACKGROUND: Host plant specificity refers to the preference of insects for particular plant species that allow them to complete their life cycle. Moth species of the Geometridae family depend closely on the vegetation composition to complete their life cycles. In northern Chile, the Geometridae species Glena mielkei is the only species described of the genus Glena. So far, this species has only been associated to a single host plan species of the Asteraceae family, Trixis cacalioides. The aim of this study was to determine the suitability of five commonly occurring plant species of Asteraceae as hosts for G. mielkei. FINDINGS: We collected G. mielkei larvae from T. cacalioides plants occurring in the Azapa valley and reared them in the laboratory. We... |
Tipo: Journal article |
Palavras-chave: Asteraceae; Azapa; Chaca; Geometridae. |
Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100019 |
| |
|
|
Sarmento,Erivanessa Costa Sousa; Pereira,Kleane Targino Oliveira; Oliveira,Fernando Sarmento de; Leal,Caio César Pereira; Torres,Salvador Barros; Dutra,Alek Sandro. |
ABSTRACT The objective was to evaluate the physical characteristics and physiological behavior of A. oleracea seeds during imbibition and germination, under different temperatures and photoperiods, as well as to determine the duration of the germination test. For this, biometric parameters (length, width and thickness) were measured in 100 seeds and thousand-seed weight was determined. In addition, the external structures of seeds and seedlings were described and the imbibition curve was monitored. Subsequently, the germination test was conducted at temperatures of 20, 25, 30, 35, 20-30 and 25-35 ºC, under constant and alternating light and dark photoperiods (12 h), arranged in 6 x 3 factorial scheme, with four replicates of 50 seeds. Seeds were sown in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Jambu; Imbibition; Seed morphology; Seed analysis. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400660 |
| |
|
| |
Registros recuperados: 127 | |
|
|
|