Crop Genebank Knowledge Base

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Terms used on the Crop Genebank Knowledge Base.

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Term Definition

Evolutionary history of a species. A diagram illustrating the deduced evolutionary history of populations of related organisms.

Phytosanitary certificate

A certificate provided by government plant health personnel to verify that seed material is substantially free from pests and diseases.


A species defined by a cladistic concept that does not insist on monophyly. It recognizes species pairs one a monophyletic daughter species (apospecies) and the other a paraphyletic progenitor species (plesiospecies).


The process in which pollen is transferred from an anther to a receptive stigma by pollinating agents such as wind insects birds bats or the opening of the flower itself.


A chemical that forms the basis of polyacrylamide gels used for electrophoresis.

Polymerase Chain Reaction

(PCR) A common molecular technique used to generate numerous copies of specific DNA fragments in vitro.


The appearance of different forms associated with various alleles of one gene or homologous of one chromosome.


A non-monophyletic group where the common ancestor is placed in another taxon said another way a group in which the members do not ultimately derive from one common ancestor where the descendants of one or more other groups are included.


A group of individual plants or animals that share a geographic area or region and have common traits.

Population genetics

The quantitative study and measurement of populations in statistical terms

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Sources for this glossary: IPGRI Tech. Bulletin 10: Molecular markers for genebank management and Seed handling in genebanks training course
Glossary open source software by M. Brampton

International Agricultural Research Centres who worked together to make this site possible:
Africa Rice Center | Bioversity International | CIAT | CIMMYT | CIP | ICARDA | ICRISAT | IFPRI | IITA | ILRI | IRRI |

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