NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL

The genus Lippia (Verbenaceae) comprises about 200 species of pantropical distribution. Lippia gracilis Schauer, popularly known as the mountain balm, is an aromatic plant, native of northeastern Brazil, used in folk medicine as an antiseptic and to treat dermatitis. Although cytogenetic serve as a...

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Main Authors: LUIS EDUARDO DE SOUSA SOARES, KATHIA MARIA BARBOSA SILVA, ZENAIDE BARBOSA, CYNTHIA CAVALCANTI ALBUQUERQUE
Format: Article
Language:English
Published: Universidade Federal Rural do Semi-Árido 2011-01-01
Series:Revista Caatinga
Online Access:http://www.redalyc.org/articulo.oa?id=237119874030
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author LUIS EDUARDO DE SOUSA SOARES
KATHIA MARIA BARBOSA SILVA
ZENAIDE BARBOSA
CYNTHIA CAVALCANTI ALBUQUERQUE
author_facet LUIS EDUARDO DE SOUSA SOARES
KATHIA MARIA BARBOSA SILVA
ZENAIDE BARBOSA
CYNTHIA CAVALCANTI ALBUQUERQUE
author_sort LUIS EDUARDO DE SOUSA SOARES
collection DOAJ
description The genus Lippia (Verbenaceae) comprises about 200 species of pantropical distribution. Lippia gracilis Schauer, popularly known as the mountain balm, is an aromatic plant, native of northeastern Brazil, used in folk medicine as an antiseptic and to treat dermatitis. Although cytogenetic serve as a tool in taxonomy rate, cytogenetical studies of genus Lippia are restricted. Given the above, the present study aimed to determine, at the first time, the chromosome number of copies of L. gracilis, and thereby contribute to a better taxonomic understanding of this genus. In this sense root tips collected from newly planted specimens were pretreated with a solution of 2mM 8-hydroxyquinoline for 4 hours, fixed in Carnoy 3:1 (ethanol: acetic acid) for 24 hours and stored in the same fixative for later analysis. The roots were hydrolyzed in 5N HCl for 20 minutes and the slides, prepared by squashing in acetic acid (45%) and stained with 2% Giemsa. The best metaphases were photographed and pointed to the chromosome number 2n = 24. Moreover, were observed metacentric and submetacentric chromosomes. Because there are several chromosome numbers in the genus, from n=10 to n=30, and as the same is little known cytogenetically, f more comprehensive cytogenetic studies are necessary, involving a larger number of species, so these data may help to clarify taxonomic inconsistencies in the family Verbenaceae.
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spelling doaj.art-0e387b4aeb3c41dc91406cf7bac3921c2022-12-22T00:22:59ZengUniversidade Federal Rural do Semi-ÁridoRevista Caatinga0100-316X1983-21252011-01-01243221224NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASILLUIS EDUARDO DE SOUSA SOARESKATHIA MARIA BARBOSA SILVAZENAIDE BARBOSACYNTHIA CAVALCANTI ALBUQUERQUEThe genus Lippia (Verbenaceae) comprises about 200 species of pantropical distribution. Lippia gracilis Schauer, popularly known as the mountain balm, is an aromatic plant, native of northeastern Brazil, used in folk medicine as an antiseptic and to treat dermatitis. Although cytogenetic serve as a tool in taxonomy rate, cytogenetical studies of genus Lippia are restricted. Given the above, the present study aimed to determine, at the first time, the chromosome number of copies of L. gracilis, and thereby contribute to a better taxonomic understanding of this genus. In this sense root tips collected from newly planted specimens were pretreated with a solution of 2mM 8-hydroxyquinoline for 4 hours, fixed in Carnoy 3:1 (ethanol: acetic acid) for 24 hours and stored in the same fixative for later analysis. The roots were hydrolyzed in 5N HCl for 20 minutes and the slides, prepared by squashing in acetic acid (45%) and stained with 2% Giemsa. The best metaphases were photographed and pointed to the chromosome number 2n = 24. Moreover, were observed metacentric and submetacentric chromosomes. Because there are several chromosome numbers in the genus, from n=10 to n=30, and as the same is little known cytogenetically, f more comprehensive cytogenetic studies are necessary, involving a larger number of species, so these data may help to clarify taxonomic inconsistencies in the family Verbenaceae.http://www.redalyc.org/articulo.oa?id=237119874030
spellingShingle LUIS EDUARDO DE SOUSA SOARES
KATHIA MARIA BARBOSA SILVA
ZENAIDE BARBOSA
CYNTHIA CAVALCANTI ALBUQUERQUE
NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
Revista Caatinga
title NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
title_full NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
title_fullStr NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
title_full_unstemmed NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
title_short NÚMERO CROMOSSÔMICO DE Lippia gracilis Schauer (VERBENACEAE) OCORRENTES NO ESTADO DO RIO GRANDE DO NORTE, BRASIL
title_sort numero cromossomico de lippia gracilis schauer verbenaceae ocorrentes no estado do rio grande do norte brasil
url http://www.redalyc.org/articulo.oa?id=237119874030
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AT zenaidebarbosa numerocromossomicodelippiagracilisschauerverbenaceaeocorrentesnoestadodoriograndedonortebrasil
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