IRRI has reduced operations due to COVID-19. Responses and requests will be addressed when conditions allow.

Descriptor: Culm number (cuno_repro)

Culm number per plant at reproductive stage.
Reproductive Stage
Crop Germplasm Committee approved
Data Type:
Numeric descriptor
Maximum Length:
Responsible Site:
International Rice Research Institute (IRRI)

Studies or environments

Distribution of Values for Culm number (cuno_repro)

RangeNumber of Accessions
0.00000 - 5.60000250
5.60000 - 11.2000014418
11.20000 - 16.8000035668
16.80000 - 22.4000024622
22.40000 - 28.000006184
28.00000 - 33.600002490
33.60000 - 39.20000533
39.20000 - 44.8000087
44.80000 - 50.4000043
50.40000 - 56.0000016

International Rice Genebank Germplasm Distribution and Exchange Policy

IRRI continues the free international exchange of germplasm, in accordance with the International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA). We provide rice in small quantities to any entity or establishment for research, breeding, or training for food and agriculture purposes; free of charge. At the same time, we gratefully receive seed contributions to add to our collection.

The procedure for acquiring seeds from IRRI are as follows:
1. Read, study and comply with Standard Material Transfer Agreement(SMTA).
2. Inquire, search and choose accessions through GRIN-Global or Genesys websites.
3. Submit requests electronically through the public websites (refer to #2)