Case Report

Related GMR Articles

Cytogenetics; Homoplasies; Taxonomy; Triatominae

In principle, Triatoma melanocephala was included in the Brasiliensis subcomplex on the basis of morphological parameters and geographical layout, since there were no other relevant data available in the literature. On the basis of karyotype, it has been proposed to exclude T. melanocephala, as well as of T. vitticeps and T. tibiamaculata, from the ... more

K.C.C. Alevi; J.A. Rosa; M.T.V. Azeredo-Oliveira
Crambe abyssinica; Crambe hispanica; Crambe kralikii; Cytogenetics; Interspecific hybrids; morphology

In this paper, interspecific crosses among Crambe abyssinica, Crambe hispanica, and Crambe kralikii were reported. In the C. hispanica x C. abyssinica (H x A) cross, 118 F1 hybrids were produced without embryo rescue, while 5 F1 hybrids were obtained with embryo rescue, when C. hispanica was used as the female ... more

X.Z. Du; B.L. Huang; H. Guan; Z.Y. Li; B.Q. Huang
Chromosome polymorphism; Cytogenetics; FISH; Histone gene; rDNA

We sampled 11 natural populations of the grasshopper Xyleus discoideus angulatus in Northeastern Brazil to analyze B chromosome frequency and meiotic behavior. We observed a single large B chromosome, resembling the X chromosome, in 29 of the 402 specimens. Eight of the 11 populations had B chromosomes, with a rather broad geographical distribution, suggesting that this is an ... more

C.B. Machado; L.C.Silva Neto; V. Loreto; M.J. Souza
Ag-NOR; C-band; Cytogenetics; FISH; Loricaria cataphracta; NOR patterns

A cytogenetic analysis of Loricaria cataphracta revealed a diploid number of 2n = 64 chromosomes, distributed as 12 metacentric + 8 submetacentric + 2 subtelocentric + 42 acrocentric, with a fundamental number of 86. Analysis of the nucleolus organizing region (NOR) using silver nitrate impregnation and fluorescence in situ hybridization (18S rDNA probe) techniques ... more

F.E. Porto; B.S. Gindri; M.M.R. Vieira; L.A. Borin; A.L.B. Portela-Castro; I.C. Martins-Santos
Cotton leaf curl virus resistance; Cytogenetics; Gene introgression; Gossypium hirsutum; Gossypium stocksii

Cotton leaf curl virus disease is a major hurdle for successful cotton production in Pakistan. There has been considerable economic loss due to this disease during the last decade. It would be desirable to have cotton varieties resistant to this disease. We explored the possibility of transferring virus resistant genes from the wild species Gossypium stocksii into MNH-786, a ... more

W. Nazeer; S. Ahmad; K. Mahmood; A.L. Tipu; A. Mahmood; B. Zhou
Amazônia Meridional; Cytogenetics; Loricariidae

Hypostomus is a group of fish with numerical and struc­tural karyotypic variability. Among them, only six species, three of which belong to the Amazon basin, show a sex chromosome. In this study, we present the karyotype structure of Hypostomus cf. plecos­tomus from the Teles Pires river basin in the municipality of Alta Flo­resta, MT. The species has 2n = 68 and ... more

L.C. Oliveira; M.O. Ribeiro; E.S. Dutra; C.H. Zawadzki; A.L.B. Portela-Castro; I.C. Martins-Santos
Backcrosses; Blocking DNA; Cytogenetics; Multicolor genomic in situ hybridization; Plant breeding; Recombinant chromosomes

The genomic in situ hybridization (GISH) technique was applied to Passiflora interspecific F1 HD13-133 hybrids (Passiflora sublanceolata x Passiflora foetida) and HD15-101 (Passiflora gardineri x Passiflora gibertii), and the backcrossed hybrids (BC1) HD18-106 and HD18-113 (Passiflora sublanceolata x HD13- ... more

C.A.F. Melo; G.S. Silva; M.M. Souza
Cytogenetics; Meiosis; Plant breeding; Pollen viability; X Triticosecale Wittmack

Triticale (X Triticosecale Wittmack) is an intergeneric hybrid derived from a cross between wheat and rye. As a newly created allopolyploid, the plant shows instabilities during the meiotic process, which may result in the loss of fertility. This genomic instability has hindered the success of triticale-breeding programs. Therefore, strategies should be developed to obtain stable ... more

R.M. Giacomin; R. Assis; S.P. Brammer; N. Junior; P.R. Da-Silva
Breast cancer; Canine; Chromosome alterations; Cytogenetics; Neoplasm

Currently, mammary neoplasms in female canines are a serious problem in veterinary clinics. In addition, the canine species is an excellent disease model for human oncology because of the biological and genetic similarities between the species. Cytogenetics has allowed further study of the characterization of neoplasms in canines. We hypothesized that the use of a direct preparation ... more

C.S.D. Morais; P.R.A.M. Affonso; J.A. Bitencourt; A.A. Wenceslau
Chromosomal homogeneity; Cytogenetics; Triatominae subfamily

Triatoma maculata and T. pseudomaculata are allopatric; however, it is believed that T. maculata was introduced into the Brazilian northeast by passive transportation of the nymphs between the feathers of migratory birds, followed by the speciation of T. pseudomaculata. T. pseudomaculata is the second most epidemiologically important species in ... more

C.H.L. Imperador; K.C.C. Alevi; J. Oliveira; J.A. Rosa; M.T.V. Azeredo-Oliveira; C.H.L. Imperador; K.C.C. Alevi; J. Oliveira; J.A. Rosa; M.T.V. Azeredo-Oliveira; C.H.L. Imperador; K.C.C. Alevi; J. Oliveira; J.A. Rosa; M.T.V. Azeredo-Oliveira