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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.01 seconds. 
Výskyt obaleče jablečného (Cydia pomonella) a obaleče švestkového (Cydia funebrana) na ovocných stromech v obci Míkovice (okres Uherské Hradiště)
 Katrňák, Michal
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Isolation, characterization and localization of orthologous sequence of the \kur{Drosophila Notch} gene in codling moth, \kur{Cydia pomonella}
 KŮTA, Václav
The codling moth, Cydia pomonella (Tortricidae) is a significant pest in apple orchards. In the 1990ies, a control programme using the Sterile Insect Technique (SIT) has been established, based on bisexual releases of sterile insects into wild populations of this pest. Male-only releases are not possible due to the lack of an efficient system to produce male-only progeny. Recently, a new approach has been proposed for the development of genetic sexing strains in Lepidoptera. It is based on insertion of a dominant conditional lethal mutation of the Notch gene, derived from the N60g11 allele of Drosophila, into the female W chromosome by means of transgenesis. This study deals with isolation, characterization, and chromosomal localization of a codling moth orthologue of the Drosophila Notch gene with the aim to prepare a mutant sequence of the orthologue to be used in plasmid constructs for germline transformation of this pest.
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BAC clones as a tool for the study of codling moth \kur{Cydia pomonella} (Lepidoptera: Tortricidae) W chromosome
 DALÍKOVÁ, Martina
In the present study, the W sex-chromosome of the codling moth was studied by means of fluorescence in situ hybridization (FISH) with probes prepared from bacterial artificial chromosome (BAC), which were isolated from the codling moth BAC library. The BAC library was screened for clones derived from both the W and Z sex chromosomes using three sets of molecular markers of codling moth sex chromosomes. A total of 54 BAC clones have been obtained. In this work, only 3 W-derived BAC clones and 1 Z-derived BAC clone were further characterized by BAC-FISH mapping on chromosome preparations of pachytene oocytes; the other BAC clones have been retained for next studies. Whereas the Z-BAC probe provided a discrete hybridization signal on the Z chromosome, and surprisingly on the W chromosome, the W-BAC probes showed multiple hybridization signals distributed on the whole W chromosome, suggesting that they are mainly composed of repetitive sequences, which occur in multiple clusters on the W chromosome. The specific pattern of W-BAC hybridization signals along with the discrete signal of the Z-BAC enabled us to discriminate left/right orientation of both the W and Z chromosomes and examine specificity of W-Z pairing during meiotic prophase I.
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