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
KEN056
类型
CGIAR
国家/地区
Genesys 中的种质
位置
纬度
-1.2368
经度
36.81906
最具代表性的作物名称
Spiny monkey ball,Natal orange
1,625
Marula
1,382
Wild Loquat
1,253
African Mesquite
933
Apple-ring acacia
822
其他
6,542
未指定
875
最具代表性的属
Strychnos
Sclerocarya
Uapaca
Acacia
Leucaena
其他
6,856
最具代表性的种
Strychnos cocculoides
Sclerocarya birrea
Uapaca kirkiana
Prosopis africana
Faidherbia albida
其他
7,360
护照数据的上次更新时间
20 May 2019
29 April 2019
29 January 2019
17 January 2019
29 June 2018
19 February 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
8000
6000
4000
2000
0 1 2 3 4 5 6 7 8 9 10
护照数据完整性指数 (PDCI)
13,225 份种质的平均 PDCI 得分为 6.33,最低得分为 3.10,最高得分为 7.80。