Terms used on the Crop Genebank Knowledge Base.
| 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. |
| Orthologous |
Characters that are homologous from a speciation event that is identical by descent. |
| Outbreeding |
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) |
| Outcrossing |
see Allogamy. |
| Outgroup |
Any group used to root a phylogenetic tree in a cladistic analysis which is not a member of the taxon group being studied. |
Glossary open source software by M. Brampton