IRRI PHL001

International Rice Research Institute

Organisations et réseaux :

Accessions au sein de Genesys :

130 657

Jeux de données supplémentaires dans Genesys :

3

Cultures les plus représentées

Rice
130 425
Non spécifié
232

Noms des cultures les plus représentées

130 425

Genres les plus représentés

Espèces les plus représentées

Taux de rappel des données de passeport

Le score PDCI moyen pour les accessions 130 657 est de 5,39, avec un score minimal de 1,35 et un score maximal de 8,10.

En savoir plus sur le taux de rappel des données de passeport

Dernières mises à jour des données de passeport

À propos

The IRRI genebank in Los Baños, Philippines, holds the world's largest collection of rice diversity, with more than 127,000 accessions of cultivated rice and wild relatives. About 38% of the accessions are traditional cultivars or landraces, 11% are breeding materials or advanced cultivars and 3% are wild relatives. (Most of the rest are "not classified".) Over the past 25 years the genebank has distributed about 228,000 samples to 103 countries.

Genebank accessions have been instrumental in creating all of the high-yielding rice varieties released by IRRI over the years. They have also been invaluable to rice breeders in national programmes. A recent study found that 90% of the varieties released by national programmes included at least one IRRI accession in their pedigree.

Except for a small number of wild relatives that cannot be conserved as seed, all accessions are maintained in an active collection at 2-4°C and at -20°C for long-term storage. Seed is tested regularly for viability and regenerated if the germination rate falls below 85%. IRRI is also researching ways to extend the longevity of seeds in storage and to predict viability more accurately.

Characterisation of the accessions for phenotypical and molecular characteristics is an important genebank activity. Data are shared through Genesys and through the International Rice Genebank Collection Information System (IRGCIS). IRRI accessions and scientists also played a large part in the effort to sequence 3000 rice genomes, and IRRI now leads the International Rice Informatics Consortium, which aims to sequence and make data available on as much rice diversity as possible.

About 95% of the accessions at IRRI are safety duplicated both in the Svalbard Global Seed Vault and in the National Center for Genetic Resources Preservation in the USA.

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