Karyological studies in Brazilian species of Lippia L. (Verbenaceae)
نویسندگان
چکیده
منابع مشابه
Karyological studies in Brazilian species of Lippia L. (Verbenaceae).
The genus Lippia (Verbenaceae) comprise around 160 species spread out mainly in South and Central Americas with few African species, some of them with potential medicinal use. Brazil is one the most important centers of diversity with approximately 75% of the species described so far. Innumerous species are endemic and poorly studied especially at a cytological level. Here, chromosomal length, ...
متن کاملRelationship between pollen morphology and chromosome numbers in Brazilian species of Lippia L. (Verbenaceae).
The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen grains and a single species exhibited, only tetracolporate pollen. The amb ranged from triangular to square, and the shape varied from oblate-spher...
متن کاملIn vitro antifungal activities of leaf extracts of Lippia alba (Verbenaceae) against clinically important yeast species.
INTRODUCTION There are few studies reporting the antifungal activities of Lippia alba extracts. METHODS A broth microdilution assay was used to evaluate the antifungal effects of Lippia alba extracts against seven yeast species of Candida and Cryptococcus. The butanol fraction was investigated by gas chromatography-mass spectrometry. RESULTS The butanol fraction showed the highest activity ...
متن کاملChemical and antifungal investigations of six Lippia species (Verbenaceae) from Brazil.
The Lippia genus is used in ethnobotany as food, beverages, seasoning and antiseptic remedies, among others. The chemical compositions of fifteen extracts of six Lippia species were investigated comparatively by HPLC-PDA. To avoid data replication of previous works on this genus, Lippia lupulina Cham. root ethanol extract was selected for isolation procedures based on Principal Component Analys...
متن کاملGenetic variation among South Brazilian accessions of Lippia alba Mill. (Verbenaceae) detected by ISSR and RAPD markers.
Twenty-seven accessions of Lippia alba Mill. collected in Rio Grande do Sul state, Brazil, were analysed by ISSR and RAPD markers to evaluate their genetic variability and relationships. Six ISSR primers and four RAPD primers generated 120 amplified fragments, most of which were polymorphics. The overall genetic variability among accessions was very high when compared with other plant species. ...
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ژورنال
عنوان ژورنال: Anais da Academia Brasileira de Ciências
سال: 2012
ISSN: 1678-2690,0001-3765
DOI: 10.1590/s0001-37652012005000068