Crop Genebank Knowledge Base

A computerized coding system that uses a printed pattern or bars on labels to identify germplasm accessions. Barcodes are read by optically scanning the printed pattern and using a computer program to decode the pattern.

A collection of germplasm that is conserved in long-term secure storage and is not used as a routine distribution source. Seed is usually stored at sub-zero temperatures and low moisture content.

The number of seeds needed to ensure the successful implementation of a procedure such as registration or regeneration.

(BLAST) A bioinformatics tool to find matches between a DNA sequence and known sequences stored in databases.

A statistical approach for constructing phylogenetic trees related to maximum likelihood that operates on a priori weighting factors and probabilities (see maximum likelihood parsimony).

The totality of genes species and ecosystems in a given region be it a microhabitat or the world. Also called biological diversity.

Bioversity International (website)

A method in cladistic analysis to infer the ???strength??? or ???confidence??? of a branch on a phylogenetic tree obtained by generating trees many times from a sample distribution of characters. Bootstrap values theoretically can vary from 0% (poor support) to 100% (excellent support).

The propagation and genetic manipulation by hybridization or deliberate self-crossing of plants for the purpose of selecting improved offspring.

A group of identical pure-breeding diploid or polyploid organisms that are distinguished from other individuals of the same species by a unique phenotype and genotype.