Gramene QTL Database

Quantitative Trait Loci (QTL) are essentially a statistical creation that identifies a particular region of the genome as containing a gene (or genes) that is associated with the trait being assayed or measured. They are shown as intervals across a chromosome where the probability of association is plotted for each marker used in the mapping experiment.

The Gramene QTL database includes QTL identified for numerous agronomic traits in rice, maize, barley, oat, sorghum, pearl millet, foxtail millet and wild rice. In this release the emphasis is on presenting the QTLs with information on associated trait and the mapped locus on a genetic map.

A significant improvement is the integration of rice QTL to the rice genome. Following the protocol developed in our database, out of total rice QTL, 5416 QTL with directly associated markers on the genome have been anchored to the rice genome. This will allow users to access a specific genome region corresponding to a QTL or browser QTL by searching traits on the rice genome browser. The data can be downloaded in bulk from our ftp site.

For more information about the current release, see the QTL Release Notes.

Help

See the Tutorial for an overview on how to use the QTL database. For more information, see the help page.

QTL Search or Browse Option:

The user can search the QTL database by typing a query and restricting the search by any one or all of the following. Use the symbol * for wild card search (e.g. seed*).

• Trait name (e.g. Seed color,  Aluminum sensitivity,  Days to heading)
• Trait symbol (e.g. SDCL, ALSN, DTHD)
• Trait category
  
•  Abiotic stress | Anatomy | Biochemical | Biotic stress | Development | Quality | Sterility or fertility | Vigor | Yield

• Linkage group (e.g. 1, 2, 10, 12)
• Published QTL symbol (e.g. qTLTS2-1,  qNSB2-1)
• QTL accession ID (e.g. AQT007, CQU7)
• Species (e.g. rice,  maize)

Acknowledgements:
We acknowledge the numerous authors of rice and maize QTL publications who have kindly shared information with us on QTLs, markers and maps by way of personal communication..