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Descriptor: Grain thickness (grth)

Grain thickness is the lateral diameter (mm) measured from 10 grains as the largest distance between the two lateral sides in the middle part of the caryopsis. Observed at post-harvest in wild 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 thickness (grth)

RangeNumber of Accessions
0.20000 - 0.400002
0.40000 - 0.600001
0.60000 - 0.800005
0.80000 - 1.0000013
1.00000 - 1.2000087
1.20000 - 1.40000336
1.40000 - 1.60000917
1.60000 - 1.800001046
1.80000 - 2.00000483
2.00000 - 2.20000106

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)