Terms used on the Crop Genebank Knowledge Base.
| Term | Definition |
|---|---|
| Pedigree |
The record of the ancestry of a genetic line or variety. |
| Pest |
An organism regarded as injurious or harmful. |
| Phenetics |
A branch of biology that determines overall similarity of organisms not evolutionary relationships (see cladistics). |
| Phenogram |
A branching tree of individuals or taxa based on phenetics. |
| Phenotype |
The external appearance of a plant that results from the interaction of its genetic composition (genotype) with the environment. |
| Phylogeny |
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. |
| Plesiospecies |
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). |
| Pollination |
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. |
| Polyacrylamide |
A chemical that forms the basis of polyacrylamide gels used for electrophoresis. |
Glossary open source software by M. Brampton