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.

Phenotype/Mutant Data In MaizeGDB

Simple Phenotype Search

If the simple search doesn't fulfill your needs, you may want to try the phenotype browser (also found below), which allows you to specify additional criteria and browse through the phenotype records.

This search form allows you to just enter a name or partial name to quickly retrieve the desired phenotype along with variations and associated stock.

(see a sample phenotype query)

    (upper limit on results is 2,000 records)

The example search above will find phenotypes that exhibit purple coloration. Other interesting phenotype searches include cob (cob-related phenotypes), cob diameter (cob diameter phenotypes), and shrunken kernel (directly go to the shrunken kernel phenotype).

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

You can also browse through the phenotypes visually by viewing images associated with various phenotypes.

Advanced Search

This tool allows you to specify detailed search criteria, much like the other advanced searches, but the output looks slightly different; it is intended to allow you to dig more directly into the data rather than just visiting individual records.

Set Up Criteria

Check the boxes next to the fields you want to search; if you just want to find records that have any value for that attribute, check the box and leave the criteria alone. You can use % or * as a wildcard in the text fields.

only phenotypes matching
only phenotypes that have images of related mutants
only phenotypes that are related to this trait:
only phenotypes that are related to this body part:

    (upper limit on results is 2,000 records)

Ontology Resources
Bioportal BioOntology
Gene Ontology
Ontology Lookup Service
Phenotypic Quality Ontology
Plant Ontology
Units Ontology

Phenotype RCN

Additional Phenotype links
Browse through the phenotypes visually
Find stocks with phenotype
Guide to Maize Mutant Phenotypes MG Neuffer and associates
Download all of Neuffer's high-resolution Maize Mutant images
Search for Trait Values

You may be interested in RescueMu mutant phenotypes from the Maize Gene Discovery Project.

You may be interested in EMS phenotypes from the Maize Inflorescence Architecture Project that were produced in defined inbred backgrounds by Gerry Neuffer.

Discussion of Phenotype Data for the General Public