Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Genetics. 1998 Jan;148(1):479-94.

A high-density rice genetic linkage map with 2275 markers using a single F2 population.

Author information

  • 1Rice Genome Research Program, National Institute of Agrobiological Resources/Institute of Society for Techno-Innovation of Agriculture, Forestry, and Fisheries, Tsukuba, Ibaraki, Japan.

Abstract

A 2275-marker genetic map of rice (Oryza sativa L.) covering 1521.6 cM in the Kosambi function has been constructed using 186 F2 plants from a single cross between the japonica variety Nipponbare and the indica variety Kasalath. The map provides the most detailed and informative genetic map of any plant. Centromere locations on 12 linkage groups were determined by dosage analysis of secondary and telotrisomics using > 130 DNA markers located on respective chromosome arms. A limited influence on meiotic recombination inhibition by the centromere in the genetic map was discussed. The main sources of the markers in this map were expressed sequence tag (EST) clones from Nipponbare callus, root, and shoot libraries. We mapped 1455 loci using ESTs; 615 of these loci showed significant similarities to known genes, including single-copy genes, family genes, and isozyme genes. The high-resolution genetic map permitted us to characterize meiotic recombinations in the whole genome. Positive interference of meiotic recombination was detected both by the distribution of recombination number per each chromosome and by the distribution of double crossover interval lengths.

PMID:
9475757
[PubMed - indexed for MEDLINE]
PMCID:
PMC1459786
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk