IRRI PHL001

International Rice Research Institute

单位和网络:

Genesys 的种质:

130,657

浏览种质 概况 查看资料组

Genesys 的附加数据组:

3

浏览种质 概况 查看资料组

最具代表性的作物

Rice
130,425
未指定
232

最具代表性的作物名称

130,425

护照数据完整性指数

种质 130,657 的 PDCI 平均分为 5.39,最低分为 1.35 最高分为 8.10。

阅读护照数据完整性指数信息

基本数据最后更新

关于

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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