Editing Seed bank (section)

==Challenges==
One of the greatest challenges for seed banks is selection. Collections must be relevant and that means they must provide useful genetic diversity that is accessible to the public. Collections must also be efficient and that means they must not duplicate materials already in collections.{{cn|date=December 2023}}

Keeping seeds alive for hundreds of years is the next biggest challenge. Orthodox seeds are amenable to 'conventional' storage protocols but there are many seed types that must be stored using nonconventional methods. Technology for these methods is rapidly advancing; local institutional infrastructure may be lacking.{{cn|date=December 2023}}

Some seeds cannot be kept alive in storage and must be regenerated – planted to produce a new quantity of seeds to be stored for another length of time.<ref name="Wouw-et-al-2009">{{cite journal | last1=van de Wouw | first1=Mark | last2=Kik | first2=Chris | last3=van Hintum | first3=Theo | last4=van Treuren | first4=Rob | last5=Visser | first5=Bert | title=Genetic erosion in crops: concept, research results and challenges | journal=[[Plant Genetic Resources]] | publisher=NIAB ([[National Institute of Agricultural Botany]]) ([[Cambridge University Press|CUP]]) | volume=8 | issue=1 | date=2009-10-19 | issn=1479-2621 | doi=10.1017/s1479262109990062 | pages=1–15 | s2cid=54496219}}</ref><ref name="Spooner-et-al-2005">{{cite book | last1=Spooner | first1=David | last2=Treuren | first2=Rob van | last3=Vicente | first3=M. C. de | title=Molecular markers for genebank management | publisher=[[International Plant Genetic Resources Institute]] (IPGRI) | publication-place=[[Rome]], Italy | year=2005 | isbn=978-92-9043-684-3 | oclc=136956590 | language=en | pages=viii+126 | hdl=10113/11672 | s2cid=83426985}} [[National Agricultural Digital Library Collection|NADLC]]# [http://naldc.nal.usda.gov/catalog/11672 11672]. [[AGRIS]] id [http://agris.fao.org/agris-search/search.do?recordID=QJ2007000031 QJ2007000031]. [[Bioversity]] [https://www.bioversityinternational.org/e-library/publications/detail/molecular-markers-for-genebank-management/ PDF]. [[CGIAR]] {{hdl|10568/104976}}.</ref> Parzies et al. 2000 found that this reduced the [[effective population size]] and [[allele]]s were lost.<ref name="Wouw-et-al-2009" /><ref name="Spooner-et-al-2005" /> Parzies' finding has since been taken seriously by banks around the world and has sparked further verification – regeneration is widely recognized to not preserve diversity perfectly.<ref name="Wouw-et-al-2009" /><ref name="Spooner-et-al-2005" />