机构详细信息

International Rice Research Institute

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.

机构代码
PHL001
类型
CGIAR
国家/地区
Genesys 中的种质
位置
纬度
14.1691
经度
121.2554
最具代表性的作物
未指定
22
最具代表性的作物名称
rice
138,862
未指定
22
最具代表性的属
Oryza
Leersia
Hygroryza
Echinochloa
Rhynchoryza
其他
4
最具代表性的种
Oryza sativa
Oryza glaberrima
Oryza nivara
Oryza rufipogon
Oryza sp.
其他
2,363
护照数据的上次更新时间
11 October 2019
10 October 2019
1 October 2019
30 September 2019
27 September 2019
PDCI:护照数据完整性指数
Genesys 会使用 PDCI 作为已发布护照数据的完整性指标。PDCI 使用基因库种质文档中存在或缺失的数据点,以便考虑其他数据点的存在或价值(van Hintum 等人,2011 年)例如,野生种质应具有定义明确的采集站点,但没有品种名称。PDCI 的范围从 0 到 10,其中最低分数 0 表示相当不完整的护照记录,而最高分数 10 则表示非常完整的护照记录。种质的任何类型,野生、地方品种、育种材料或现代变体,都可以达到 PDCI 的最高分。
护照记录的编号
30000
22500
15000
7500
0 1 2 3 4 5 6 7 8 9 10
护照数据完整性指数 (PDCI)
130,622 份种质的平均 PDCI 得分为 6.00,最低得分为 2.85,最高得分为 8.40。