FISH Karyotype and GISH Meiotic Pairing Analyses of a Stable Intergeneric Hybrid xBrassicoraphanus Line BB#5

Determination by GISH and FISH of hybrid status in Lilium.

In the genus Lilium, plants obtained from crosses, especially between distant relatives, are not always hybrids because embryos can develop as a result of apomixis. These plants constitute genetic material of the maternal parent only. In this study, verification of hybrid status of plants which have been obtained from the crosses 'Marco Polo'xLilium henryi and 'Expression'xL. henryi was perform...

FISH and GISH: Modern cytogenetic techniques

In recent years, advances in the molecular cytogenetic technique of fluorescence in situ hybridization (FISH), which enables the direct chromosomal localization of labelled DNA probes and genomic in situ hybridization (GISH), which determines the inter-species distribution of repeated sequences have enabled a resurgence of cytogenetic analysis in plant genome research and molecular breeding. Pr...

A Summary of Intergeneric New World Quail Hybrids, and a New Intergeneric Hybrid Combination

Analysis of the Meiotic Segregation in Intergeneric Hybrids of Tilapias

Tilapia species exhibit a large ecological diversity and an important propensity to interspecific hybridisation. This has been shown in the wild and used in aquaculture. However, despite its important evolutionary implications, few studies have focused on the analysis of hybrid genomes and their meiotic segregation. Intergeneric hybrids between Oreochromis niloticus and Sarotherodon melanothero...

HOP1: a yeast meiotic pairing gene.

The recessive mutation, hop1-1, was isolated by use of a screen designed to detect mutations defective in homologous chromosomal pairing during meiosis in Saccharomyces cerevisiae. Mutants in HOP1 displayed decreased levels of meiotic crossing over and intragenic recombination between markers on homologous chromosomes. In contrast, assays of the hop1-1 mutation in a spo13-1 haploid disomic for ...