机构详细信息

Bioversity International Musa Germplasm Transit Centre

Bioversity’s collection of bananas and plantains and their wild relatives (Musa species) is kept at the International Transit Centre (ITC) at Katholieke Universiteit Leuven, Belgium. The banana collection – with more than 1500 accessions – is the largest in the world. About 75% are traditional varieties or landraces and 15% are wild relatives. The remaining 10% is largely breeding and research material.

In the 30 years since it was established, the ITC has distributed more than 17,000 samples to 109 countries.

Accessions are kept in-vitro, as 20 shoot cultures in continuous light at 16°C. They are subcultured each year, and after several years of maintenance the tissue cultures are replaced with new material grown in the greenhouse and checked for genetic integrity. This prevents the accumulation of changes that can occur in plants kept in tissue culture for long periods of time.

Accessions are also cryopreserved in liquid nitrogen at -196°C. This stops both the growth of plant cells and all biological deterioration, so accessions can be preserved indefinitely and resuscitated into fully viable banana plants. As further insurance, a safety duplicate set of cryopreserved material is being deposited for safe-keeping at the French research institute for development (IRD) in Montpellier, France.

The ITC is also a global hub for the safe movement of Musa germplasm around the world. It has a system for indexing accessions for the presence of viruses and has researched protocols for cleaning up infected accessions. Only accessions that are tested virus free – currently 65% of the collection – are distributed, and work continues to ensure the entire collection is available for distribution.

Bioversity also maintains the Musa Germplasm Information System (MGIS) with access to information from 24 national banana collections and morphological and molecular data on many of its accessions.

机构代码
BEL084
类型
CGIAR
国家/地区
Genesys 中的种质
位置
纬度
50.52
经度
4.42
最具代表性的作物
banana
未指定
4
最具代表性的作物名称
Banana
1,735
ENSETE
4
最具代表性的属
Musa
Ensete
最具代表性的种
Musa aab
Musa aa
Musa sp.
Musa aaa
Musa abb
其他
328
护照数据的上次更新时间
12 February 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
700
525
350
175
0 1 2 3 4 5 6 7 8 9 10
护照数据完整性指数 (PDCI)
1,566 份种质的平均 PDCI 得分为 5.98,最低得分为 3.55,最高得分为 8.90。