Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/157677
Research center of Embrapa/Collection: Embrapa Semiárido - Artigo em periódico indexado (ALICE)
Date Issued: 2007
Type of Material: Artigo em periódico indexado (ALICE)
Authors: SOUZA, M. J. de
MELO, N. F. de
Additional Information: NATONIEL FRANKLIN DE MELO, CPATSA.
Maria José de Souza, UFPE
Title: Chromosome study in Schistocerca (Orthoptera-Acrididae-Cyrtacanthacridinae): karyotypes and distribution patterns of constitutive heterochromatin and nucleolus organizer regions (NORs).
Publisher: Genetics and Molecular Biology, Ribeirão Preto, v. 30, n. 1, p. 54-59, 2007.
Language: en
Keywords: Análise de cromossomo
Diploide
Karyotypes.
Description: Chromosome analyses were performed in two grasshopper species of the genus Schistocerca, S. pallens and S. flavofasciata. Both species shared the same diploid number (2n = 23, X in males; 2n = 24, XX in females); and a con- served karyotype composed exclusively of acrocentric chromosomes but differed in their distribution patterns of constitutive heterochromatin and nucleolus organizer regions (NORs). Constitutive heterochromatin was located in the pericentromeric region of alI chromosomes in both species. S. flavofasciata presented an additional C-band on the distal region of the long arm of a small autosome pair (S9). Nucleolus organizer regions (NORs), revealed by silver nitrate staining (Ag-NORs), were observed on a medium autosome pair (M5) in both species. S. pallens presented an additional NOR-bearing autosome (M6). The same sites were labeled after FISH with an rDNA probe in S. pallens cells.
Thesagro: Gafanhoto.
Data Created: 2007-04-02
Appears in Collections:Artigo em periódico indexado (CPATSA)

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