ABSTRACT. Mocó cotton belong to the same species as the cultivated species, Gossypium hirsutum, and cultivated forms were mainly landraces but also developed as cultivars, bearing good fiber quality and drought tolerant when cropped as a perennial species. The northeast Brazil crop system based on this cotton type is finished, with a few small area planted in the three main States, where it was previously cultivated (Ceará, Paraíba, and Rio Grande do Norte), but in others, maintenance is accomplished by single dooryard plants. Plants were found in all visited Northeast Brazil municipalities, sometimes in the North of the country, and were collected for ex situ preservation and evaluation. Most of seeds had no fuzz (62.2%) and 94.6% of the genotypes presented spot in flowers. Seventy-one alleles were revealed in 12 loci. The genetic structure of the population evaluated by microsatellite markers shows two main groups, one comprising the Seridó region where landraces were originated and other comprising 2 I.P.P. de Menezes et al. Genetics and Molecular Research 16 (3): gmr16039659 the state of Ceará, where a specific breeding program was developed. Genotypes collected in North Brazil States as well as those collected in Bahia, Alagoas, and Sergipe grouped with those collected in Ceará. The Mantel correlogram indicates a significant (P < 0.05) correlation between genetic and geographical distances up to 77 km. The ex situ maintenance and agronomical evaluation are the main concerns for mocó, as the use of the agricultural interesting traits, possibly introgressed to other genotypes, is predicted. The in situ preservation is still of interest since there is more diversity there than in the collected plants and some should be continued due to use as medicinal plant.

Abandonment of planting of Gossypium barbadense has endangered its existence. The objective was to determine the characteristicof the maintenance of Gossypium barbadense in the Central-West Region of Brazil, with the aim to foster the conservation of the species. Expeditions were conducted in 2014-2015 in Southeast Goiás, where cotton collection has not been reported before. Data from previous collections in Goiás, Mato Grosso, Mato Grosso do Sul and Distrito Federal available in Albrana database were considered this study. In the Central-West Region of Brazil, 466 accesses of G. barbadense were recorded, found most frequently in backyards (91.4%), but also spontaneous plants (7.5%), farm boundary (0.8%) and commercial farming (0.2%) have also been found. The main use indicated by VDU was as medicinal plant (0.66), therefore this is the main reason for in situ preservation. However, this cultural habit has been abandoned, causing uncertainty about the continuity of preservation. There was presence of lint almost only in seeds of plants of the variety brasiliense. The most common fiber color was white, not cream color, suggesting that plants are derived from commercial cultivars used in the past. Hence, until 2015, the conservation relies on single plants almost exclusively in backyards for medicinal use, and there are no crops of this type of cotton for commercial purpose. The exploitation of the possible use both of the fiber as a medicinal plant would foster ex situ and in situ preservation of this important genetic resource.

RESUMOEste estudo teve como objetivo estimar a prevalência do uso de drogas por discentes de uma escola da rede estadual de Pires do Rio, Goiás, associando-a ao desempenho escolar dos mesmos. Participaram da pesquisa 371 discentes do ensino médio, com idade entre 14 e 34 anos, dos turnos matutino e noturno que responderam a um questionário anônimo coletivamente em sala de aula. As drogas mais consumidas, alguma vez na vida, foram: álcool (95,8%), tabaco (46,1%), maconha (3,5%), solventes (4%), cocaína (4%) e crack (0,5%). A partir deste estudo, foi possível perceber que os índices de reprovação apresentados, nos períodos investigados, foi elevado, quando associado aos discentes que já tiveram contato com algum tipo de droga, o que reforça a hipótese de que o uso de tais substâncias pode interferir no desempenho escolar dos alunos. Considerase necessário a implantação de políticas de intervenção contra o uso de drogas, a fim de minimizar o problema. PALAVRAS-CHAVE:Uso de drogas, discentes, desempenho escolar. DRUG USE AND SCHOOL PERFORMANCE AMONG YOUNG TEENAGERS AND THE SCHOOL OF A PUBLIC SCHOOL OF PIRES DO RIO -GO ABSTRACTThis study aimed to estimate the prevalence of drug use by students in a state school of Pires do Rio, Goiás, associating it with the performance of the same school. Participants were 371 high school students, aged 14 to 34, the morning and evening shifts who responded to an anonymous collectively in the classroom. The most frequently used drugs at least once in life, were alcohol (95.8%), tobacco (46.1%), marijuana (3.5%), solvents (4%), cocaine (4%) and crack (0.5%). From this study, it was possible that the failure rates presented in the periods investigated, was high when associated with students who have had contact with any drugs, which reinforces the hypothesis that the use of such substances can interfere the academic performance of students. It is considered necessary to implement intervention policies against drug use in order to minimize the problem

The objective of the present study was to identify and evaluate the content of information about dengue available on Brazilian websites. Thirty-two websites were selected for the analysis. For the evaluation of the content of information about dengue, a form was prepared with 16 topics grouped in six information blocks: etiology/transmission, vector, control and prevention, disease/diagnosis, treatment and epidemiology. The websites were also evaluated according to the following criteria: authorship, update, language, interactivity, scientific basis and graphic elements. The results showed a predominantly lack of information in relation to the topics analyzed in each information block. Regarding the technical quality of the websites, only 28.1% showed some indication of scientific basis and 34.3% contained the date of publication or of the last update. Such results attested the low reliability of the selected websites. Knowing that the internet is an efficient mechanism for disseminating information on health topics, we concluded that the creation of such mechanisms to disseminate correct and comprehensive information about dengue is necessary in order to apply this useful tool in the prevention and control of the disease in Brazil.