Health diagnosis of forage grass genetic resources

Contributors to this page: ILRI, Addis Ababa, Ethiopia (Jean Hanson, Juvy B. Cantrell, Janice Proud); CIAT, Cali, Colombia (Maritza Cuervo); Bioversity International/ILRI, Addis Ababa, Ethiopia (Alexandra Jorge).

List of pests and diseases of quarantine importance

Click here for more detailed outputs from the page of the safe movement of germplasm, on this website.


Ustilago kamurensis (Kenya).


Elephant grass mosaic virus (EGMV).
Johnson grass mosaic virus (JGMV).


Napier stunt (East Africa).

Click the forage grasses health table for specific species information about health diagnosis methods to detect some of these diseases.

The text for this flip book was extracted from: Rao NK, Hanson J, Dulloo ME, Ghosh K, Nowel D and Larinde M. 2006. Manual of seed handling in genebanks. Handbooks for Genebanks No. 8. Bioversity International, Rome, Italy. 147pp.

Options for testing procedures

Recommended methods to detect the presence of each pest or disease:

Testing intervals/seasons

Testing before material goes into the genebank or to the field is important to reduce transfer of diseases or pests.




Recording information during health diagnosis

The following information should be recorded for each health diagnosis step:

References and further reading

Albrechtsen SE. 2006. Testing Methods for Seed-Transmitted Viruses: Principles and Protocols. CABI Publishing, Cambridge, USA. pp. 268.

Plant Biosecurity, Biosecurity Australia 2000. Viruses, Phytoplasmas and Spiroplasmas of Clonal Grasses and Their Diagnosis. Consultancy report. Available from: Date accessed: 16 Jan 2011.

The Genebanks

The 11 CGIAR genebanks currently conserve 730,000 of cereals and grain legumes, forage crops, tree species, root and tuber crops, bananas and crop wild relatives.