机构详细信息

Genetic Resources Unit, ICRAF

The ICRAF genebank in Nairobi, Kenya, conserves the diversity of a wide range of agroforestry tree species, most of which are a source of food or forage. Accessions are stored as seed and in field genebanks in the regions where ICRAF works.

The seed genebank currently holds over 6000 accessions of 190 species. Of these, information on 6456 is available through Genesys. Seed is maintained in an active collection at 5°C, and for long-term conservation ICRAF works with the Millennium Seed Bank in the United Kingdom and the Kunming Institute of Botany genebank in China.

Conservation of tree species poses special difficulties, including the large number of genera -- each with specific requirements -- long generation times and seeds that often cannot be dried for conventional storage. As a result, ICRAF has to maintain decentralised field genebanks. These field genebanks both conserve diversity and offer a source of sexual and clonal reproductive material. The field genebanks are also research sites for evaluation and characterisation. Overall, 12,000 accessions of 67 diverse tree and shrub species are maintained in field genebanks spread across 42 sites in 16 countries of which, 6769 Field Genebank accessions  are available through Genesys.

The seed and field genebanks supply germplasm for ICRAF's research to domesticate some species, and to others wanting access to agroforestry plant genetic resources.

About 19% of the seed accessions are safety duplicated at the Svalbard Global Seed Vault. About 8% of the accessions are maintained in long-term storage at Kunming Institute of Botany (KIB) in China.

A database -- the Agroforestry Species Switchboard -- gives access to "information sources to support tree research and development activities".

机构代码
类型
CGIAR
国家/地区
Genesys 中的种质
位置
纬度
-1.2368
经度
36.81906
最具代表性的作物
cowage
未指定
13,308
最具代表性的作物名称
Marula
1,786
Wild Loquat
1,633
Spiny monkey ball,Natal orange
1,625
African Mesquite
925
Apple-ring acacia
737
其他
6,014
未指定
589
最具代表性的属
Sclerocarya
Uapaca
Strychnos
Leucaena
Acacia
其他
6,320
最具代表性的种
Sclerocarya birrea
Uapaca kirkiana
Strychnos cocculoides
Prosopis africana
Faidherbia albida
其他
6,598
护照数据的上次更新时间
17 июня 2020
25 мая 2020
26 апреля 2020
21 апреля 2020
19 февраля 2018
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
0 1 2 3 4 5 6 7 8 9 10
护照数据完整性指数 (PDCI)
13,309 份种质的平均 PDCI 得分为 6.80,最低得分为 3.50,最高得分为 7.80。