Crop Genebank Knowledge Base

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Learning resources Glossary/Acronyms

Terms used on the Crop Genebank Knowledge Base.

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Term Definition
Obsolete variety

A plant variety that is no longer grown commercially.

Oligonucleotide probe

A DNA fragment consisting of nucleotides that is used to detect the presence of its complementary sequence in a DNA sample by hybridization testing.

Orthodox seeds

Seeds that can be dried to low moisture content and stored at low temperatures without damage to increase seed longevity.


Characters that are homologous from a speciation event that is identical by descent.


Controlled or natural matings among unrelated individuals. Out-breeding may also refer to a species that has specific barriers to selfing or exhibits such inbreeding depression that inbred individuals never reach maturity. Also called exogamy or cross-breeding. (cf. Inbreeding)


see Allogamy.


Any group used to root a phylogenetic tree in a cladistic analysis which is not a member of the taxon group being studied.

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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