Due to the lapse in funding in the federal government, MaizeGDB will be available only for informational purposes by non-federal employees. Until further notice, the website and community database will not be updated or maintained, and MaizeGDB staff will be unable to respond to feedback or emails.

Simple Stock Search
Advanced Stock Search
Search for sequence-indexed mutants
Stock resources

Composite Genotype Finder (COGENFITO): This tool allows you to search for particular genotypes at loci of interest, browse genotype data from differentgenetic maps, and obtain stocks that have desired genotypes.

Simple Stock Search: This search form allows you to just enter basic name info to quickly retrieve the desired stock. A sample search, which lists stocks that have variations of bz1, a1, and wx1, is given below.

(see a sample stock query)

    (upper limit on results is 2,000 records)

Tip: If you want to find stocks utilizing a specific variation, put the name of the variation in parentheses before you search. For example, (a1) will find variations of a1. Be sure to check the case-sensitive box if you want your search to be case sensitive!

This search can be executed on every page on the site by utilizing the form in the upper right corner. Choose "Stock" from the drop-down menu, enter your search term in the field, and hit return to find the stock you're looking for.

Advanced Stock Query

You can use this form to create a more detailed stock query. Check the boxes for the filters you want to use, then click submit to see a table of the results!

available from the Maize Genetics Stock Center
developed by:
with :
with :
with :
with :
     with :
     with :
with :
with : and/or :
available from :
with :

    (upper limit on results is 2,000 records)

Maize Genetics Cooperation Stock Center Resources

The Maize Genetics Cooperation Stock Center maintains an extensive collection of maize genetic stocks. MaizeGDB supports the Stock Center by providing interlinked stock information throughout our database, as well as reports and catalogues of Stock Center stocks, and the ability to order stocks or request more information directly from the Stock Center.

The primary portal to genetic stocks (germplasm) is distributed by the Maize Genetics Cooperation Stock Center, Urbana IL. Additional germplasm may also be accessed from this site, for example germplasm with molecular or phenotype data represented in MaizeGDB. Many of these non-mutant resources, may be requested from the North Central Regional Plant Introduction Station (NCRPRIS).

The Stock Center Catalog is an extensive categorized listing of the stocks available from the stock center.

A key for how to Decrypt Stock Packet Labels is often helpful for researchers unfamiliar with the Stock Center's labelling practices.

You may also sort lines from the Ames Diversity Panel based on IBS (Identity by State) score using the TYPSimSelector.

Search for and download Trait Values.

Stocks at MaizeGDB

Discussion of Stock Data for the General Public

What is a stock?

A stock is a sample of corn that expresses a specific variation (or a specific small set of variations). Thus, stocks are living examples of variation data.

Why store stock data?

Storing stock data makes it easy for scientists interested in a particular variation or locus to find and acquire living tissue that contains this desired variation.