Crop Genebank Knowledge Base

A crop cultivar that has evolved through many years of farmer-directed selection and that is specifically adapted to local conditions landraces are usually genetically heterogeneous.

(LRR) Conserved domain of disease resistance genes.

The non-random association of the alleles from different loci in the gametes.

The presence of genes (or molecular probes) close to each other on chromosomes so that they are never completely independently assorted the degree of linkage is greater the closer the genes or markers are on the same chromosome.

The specific place on a chromosome where a gene or particular piece of DNA is located.

A phenomenon in cladistic analyses where strongly unequal rates of evolutionary change in different members of a group cause cladistics to produce incorrect trees.

The storage of germplasm for a long period such as in base collections and duplicate collections. The period of storage before seeds need to be regenerated varies but is at least several decades and possibly a century or more. Long-term conservation takes place at sub-zero temperatures.

An enzyme used to determine the concentration of ATP as a measurable real-time light signal in pyrosequencing.

Meters above sea level

A test that computes the linear correlation between two proximity matrices (dissimilarity or similarity) used in phenetics to test whether results from different analyses of the same taxa are similar or different.