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Characterization and genetic relationships among Brazilian biotypes of Schizaphis graminum (Rondani) (Hemiptera: Aphididae) using RAPD markers Neotropical Entomology
Lopes-da-Silva,Marcelo; Tonet,Gabriela E.L.; Vieira,Luiz G.E..
The greenbug Schizaphis graminum (Rondani) is one of the most important cereals pests in the world. Within populations of this species, several biotypes, which are clones that share same virulence relationships with cultivated plants, can be distinguished. Molecular markers have been used to genetically characterize insect populations because they are fast and cost effective. In order to find RAPD markers to identify Brazilian S. graminum biotypes, nineteen clonal populations of three biotypes (B, C and E) from Brazil and three clonal populations from the U.S. were examined. Eighteen primers were used to analyze the material, but only six primers revealed polymorphisms and among those, three produced diagnostic band profiles that allowed biotype...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic variability; Molecular marker; Greenbug; Insect-plant relationship.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000100009
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Ocorrência de formas gâmicas e ambifásicas de Schizaphis graminum (Rondani) (Homoptera, Aphididae) em criações de campo e laboratório em São Paulo, Brasil Zoologia
Cabette,Helena Soares Ramos.
The ocurrence of males, gamic and ambiohasic females of the greenbug Schizaphis graminum (Rondani, 1852) among parthenogenetics reared on Sorghum bicolor (Linnaeus) Moench, in Ribeirão Preto (São Paulo, Brazil), from 1980 through 1983, follows an annual cycle. They appear from April through June, when the photoperiod has about 11 hours of daily photophase. Despite the low number these findings support the potential for holocycle, triggered by variable abiotic factors in this region with mild winters.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Homoptera; Aphididae; Schizaphis graminum; Greenbug; Sexual morphs; Amhiphasic.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300021
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