You have reached the IRRI Genebank, where your rice science journey begins. Home to more than 132,000 available accessions which includes cultivated species, wild relatives and species from related genera.

Descriptor: Grain length (grlt)

Measured as the distance from the base of the lowermost sterile lemma to the tip (apiculus) of the fertile lemma or palea, which ever is longer. Observed at post-harvest in all species.
Post-harvest 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 Grain length (grlt)

RangeNumber of Accessions
0.00000 - 1.44000129
1.44000 - 2.880000
2.88000 - 4.3200024
4.32000 - 5.76000851
5.76000 - 7.2000010171
7.20000 - 8.6400051465
8.64000 - 10.0800043978
10.08000 - 11.520009237
11.52000 - 12.96000334
12.96000 - 14.400008

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)