Consulta: subjectFacets:"Histochemical analysis"
Registros recuperados: 3
Data/hora: 09/06/2024 15:50:09

In vitro pollen germination and pollen viability in passion fruit (Passiflora spp.)
Provedor de dados: 94
Autores: Soares,Taliane Leila; Jesus,Onildo Nunes de; Santos-Serejo,Janay Almeida dos; Oliveira,Eder Jorge de.
The use of Passiflora species for ornamental purposes has been recently developed, but little is known about pollen viability and the potential for crossing different species. The objective of this study was to evaluate the pollen viability of six Passiflora species collected from different physiological stages of development through in vitro germination and histochemical analysis using dyes. The pollen was collected in three stages (pre-anthesis, anthesis and post-anthesis). Three compositions of culture medium were used to evaluate the in vitro germination, and two dyes (2,3,5-triphenyltetrazolium chloride, or TTC, and Lugol's solution) were used for the histochemical analysis. The culture medium containing 0.03% Ca(NO3) 4H2O, 0.02% of Mg(SO4 ).7H2O,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passion fruit; Pollen germination; Histochemical analysis; Wild passion fruit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000400023

Colleters in Chamaecrista (L.) Moench sect. Chamaecrista and sect. Caliciopsis (Leguminosae-Caesalpinioideae): anatomy and taxonomic implications
Provedor de dados: 39
Autores: Silva,Marinalva dos Santos; Coutinho,Ítalo Antônio Cotta; Araújo,Maicon Nascimento; Meira,Renata Maria Strozi Alves.
ABSTRACT The genus Chamaecrista contains ca. 330 species organized into six sections, of which section Chamaecrista is the second largest (ca.75 species) distributed among six series, while the section Caliciopsis contains only two species. Colleters have been described in the genus Chamaecrista and they show potential taxonomic and phylogenetic significance. They are associated with lubrication, desiccation prevention and protection from microbial attacks of young developing organs. Although six types of colleters have been described for the genus Chamaecrista, there have been no studies focusing on the diversity of colleters in the sections Chamaecrista and Caliciopsis. Samples from developing leaves and flowers of both sections were obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colleter; Flower; Histochemical analysis; Leaf; Polysaccharides; Secretory structures; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300382

Viability of pollen grains of tetraploid banana
Provedor de dados: 53
Autores: Soares,Taliane Leila; Souza,Everton Hilo de; Costa,Maria Angélica Pereira de Carvalho; Silva,Sebastião de Oliveira e; Santos-Serejo,Janay Almeida dos.
ABSTRACT Obtaining banana tetraploid cultivars from triploid strains results in total or partial reestablishment of fertility, allowing the occurrence of some fruits with seeds, a feature that is undesirable from a marketing perspective. The objective of this study was to assess the viability of pollen of 12 banana tetraploid hybrids (AAAB) by means of in vitro germination and two histochemical tests (acetocarmine and 2,3,5-triphenyltetrazolium chloride). The pollen tube growth was evaluated by germinating grains in three culture media — M1: 0.03% Ca(NO3)∙4H2O, 0.02% Mg(SO4)∙7H2O, 0.01% KNO3, 0.01% H3BO3 and 15% sucrose; M2: 0.03% Ca(NO3)∙4H2O, 0.01% KNO3, 0.01% H3BO3 and 10% sucrose; and M3: 0.015% H3BO3, 0.045% Ca3(PO4)2 and 25% sucrose. The acetocarmine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa L.; In vitro pollen germination; Histochemical analysis; Plant breeding.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200145