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Descriptor: Leaf senescence(pre-2007) (lsen_pre2007)

The leaves below the flagleaf are observed at the time of harvest for their retention of greenness. Observed in all species.
Post-harvest Stage
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
Responsible Site:
International Rice Research Institute (IRRI)

Studies or environments

Distribution of Values for Leaf senescence(pre-2007) (lsen_pre2007)

CodeDefinitionNumber of Accessions
1 Late and slow (1)41320
2 Late and slow (2)556
3 Late and slow (3)24614
4 Intermediate (4)351
5 Intermediate (5)21124
6 Intermediate (6)177
7 Early and fast (7)5913
8 Early and fast (8)106
9 Early and fast (9)6586
999 Mixture3

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)