Crop Genebank Knowledge Base

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Terms used on the Crop Genebank Knowledge Base.

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Term Definition

Allelic forms of an enzyme that can be distinguished by gel electrophoresis (see isozyme).


The analysis of molecular variance is a method for studying molecular variation within a species.


DNA fragments amplified by PCR.

Amplified Fragment Length Polymorphism

A molecular marker technique that targets variation in DNA restriction sites and in DNA restriction fragments.


Association of Seed Analysts AOSA


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

Arbitrarily Primed Polymerase Chain Reaction

(AP-PCR)A variant of the Random Amplified Polymorphic DNA (RAPD) technique that uses longer arbitrary primers than RAPDs.

Asexual reproduction

The formation of new individuals from the cell(s) of a single parent. It does not entail recombination or mixing of parental forms.

Association genetics

A research field directed to the identification of correlations between phenotypic traits and genetic markers with the aim to identify and locate the underlying genes in the genome.


Transfer of pollen (pollination) from the anther of a flower to the stigma of the same flower or sometimes to that of a genetically identical flower (as of the same plant or clone) The ability of many plant species to naturally and successfully fertilize within one individual. Also called self-pollination.

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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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