Crop Genebank Knowledge Base

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Terms used on the Crop Genebank Knowledge Base.

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Term Definition
Species diversity

A function of the distribution and abundance of species similar in meaning to species richness. In more technical literature includes considerations of the evenness of species abundances. An ecosystem is said to be more diverse according to the more technical definition if species present have equal population sizes and less diverse if many species are rare and some are very common.

Storage life

The number of years that a seed can be stored before seed death occurs.


Refers to two or more populations that occupy overlapping geographic areas.


A trademark term for a high throughput closed tube assay to detect specific sequences in PCR products.

Target Region Amplification Polymorphism

A molecular marker technique related to SRAP, but using a fixed primer desgned from a targeted EST sequence.

Template DNA

The ???template??? DNA that is used for the initial reaction of a molecular marker analysis.

Tetrazolium test

A test for viability in which moist seeds are soaked in a solution of triphenyl tetrazolium chloride.


The process of beating plants with a machine or by hand to separate the seeds.

Tiling strategy

The detection of allelic variation at genes of known basic sequence by hybridization tests on microarrays using large series of sequence-overlapping probes.


A recognizable quality or attribute resulting from interaction of a gene or a group of genes with the environment.

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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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