Physical mapping of DNA repetitive sequences to mitotic and meiotic chromosomes of Brassica oleracea var. alboglabra by fluorescence in situ hybridization
Article Abstract:
Three 18s-5.8S-25S rDNA sites have been confirmed in the haploid genome of Brassica oleracea var. alboglabra and their locations have been determined through fluorescence in situ hybridization. Two sites are located subtelomerically on the short arms of chromosomes 4 and 7, which are satellited acrocentric chromosomes. The third is on the short arm of chromosome 2, a large submetacentric chromosome, next to the centromere. Other details of the karyotype have also been determined.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Flowering plant self-incompatibility: the molecular population genetics of Brassica S-loci
Article Abstract:
Molecular genetic analyses of sequences involving polymorphism of self-incompatibility loci in different angiosperm families in comparison to other very polymorphic loci, especially MHC loci, can give information about the nature of polymorphism and its maintenance at self-incompatibility loci. Evidence for recombination at the Brassica self-incompatibility loci exists. It may be possible to find regions that are especially important in function in the recognition reaction.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Dominance relationships between S-alleles in self-incompatible Brassica campestris L
Article Abstract:
Relationships of dominance of S-alleles in self-incompatible Brassica campestris L., as studied for 249 of 276 possible pairs of 24 S-alleles isolated from two natural populations of Turkey and Japan are discussed. Interactions were different in the stigma and pollen and independent weakening of S-alleles was seen in 20 pairs in the pollen and two in the stigma with the interaction apparently correlated with recessiveness of S-alleles.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Sporophytic and gametophytic components of thermotolerance affected by pollen selection
- Abstracts: Overexpression of Candida albicans secretory aspartyl proteinase 2 and its expression in Saccharomyces cerevisiae do not augment virulence in mice
- Abstracts: Direct determination of carbon and nitrogen contents of natural bacterial assemblages in marine environments. Transient growth requirement in Bacillus subtilis following the cessation of exponential growth
- Abstracts: Ubiquitination of p27 is regulated by Cdk-dependent phosphorylation and trimeric complex formation. pX, the HBV-encoded coactivator, suppresses the phenotypes of TBP and TAFII250 mutants
- Abstracts: Patterns of activity, flocking, and habitat use in parrots of the Peruvian Amazon