The Chromosome Counts Database (CCDB, version 1.46) is a comprehensive community resource for plant chromosome numbers.
CCDB aims to combine existing data resources into an extensive central database that will be updated regularly by the community.

Users and researchers are encouraged to contribute to the accuracy and completeness of the data in CCDB
by submitting new counts, or reporting erroneous counts .

To start browsing for chromosome numbers, use the Browse page, or the search box above.

Recommended citation:
CCDB is built upon many individual data collection efforts. In addition to the main citation detailed below we recommend citing the major resources where the downloaded data were first assembled.
Main citation: Rice et al. 2015. The Chromosome Counts Database (CCDB) – a community resource of plant chromosome numbers. New Phytol. 206(1): 19-26.
Abstract.

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