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| SOUZA,EVERTON H.; SOUZA,FERNANDA V.D.; ROSSI,MÔNICA L.; PACKER,RENAN M.; CRUZ-BARROS,MARIA AMELIA V.; MARTINELLI,ADRIANA P.. |
| ABSTRACT Pollen morphology characterization is important in taxonomy, conservation and plant breeding, and pollen viability studies can support breeding programs. This study investigated pollen morphology and male fertility in 18 species of Bromeliaceae with ornamental potential. For morphological characterization, pollen grains were acetolyzed and characterization of exine was done using scanning and transmission electron microscopy. Pollen viability was investigated by in vitro germination and histochemical tests. Species belonging to Aechmea and Ananas genera presented medium size pollen, except for Ae. fasciata, with large pollen. Al. nahoumii, P. sagenarius and the Vriesea species analyzed showed large pollen, except for V. carinata, with very large... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aechmea; Alcantarea; Ananas; In vitro pollen germination; Histochemical test; Vriesea. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603067 |
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| ROSSI,MÔNICA L.; SOUZA,EVERTON H.; GRANER,ERIKA M.; ALMEIDA,MARCÍLIO DE; MARTINELLI,ADRIANA P.. |
| Abstract Stevia rebaudiana belongs to the Asteraceae family with high economic and medicinal potential. This article describes and illustrates morphological and histological aspects of leaves and reproductive organs, and the germination process, to provide detailed information on this species and to contribute to taxonomic, phylogenetic and pharmacobotanical projects. The fruit is a cypsela, small, simple, dry, indehiscent, monospermic, light or dark colored, with aristate pappus, and the seed presents a spatulate axile embryo. Germination is phaneroepigeal with a pivotal root system and many absorbing root hairs. The leaves are simple, elliptical to obovate, with two types of trichomes (glandular and tector), with a short petiole, exhibiting an opposite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Germination; Light microscopy; Morphology; Scanning electron microscopy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502167 |
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| CABRAL,GLAUCIA B.; CARNEIRO,VERA T.C.; GOMES,ANA CRISTINA M.M.; LACERDA,ANA LUIZA; MARTINELLI,ADRIANA P.; DUSI,DIVA M.A.. |
| ABSTRACT Brachiaria brizantha is a forage grass well adapted to tropical areas and cultivated in millions of hectares in Brazil. The apomictic mode of reproduction in this species, in addition to differences in ploidy between sexual and apomictic plants, impairs crossbreeding. The development of a methodology to transform apomictic cultivars will provide an option to introduce agronomic important traits to B. brizantha cv. Marandu. In addition, it will open the possibility to study in vivo the function of candidate genes involved in the apomictic reproduction. The objective of this work was to evaluate peeled seeds, isolated embryo from mature seeds, embryogenic calluses and embryogenic cell suspensions, as target explant for genetic transformation via... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forage; Gus; HptII; Hygromycin. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401789 |
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