Genetics and Genomics of the Triticeae pp 31-79 | Cite as
Triticeae Genetic Resources in ex situ Genebank Collections
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Abstract
Of the ca. 350 species and ca. 30 genera estimated for the Triticeae, 111 species of 19 genera are either cultivated or useful wild species. These species are listed together with their main uses in the first part of this chapter. The second part provides an overview of Triticeae holdings in the world’s genebanks. Starting from a survey of available online information resources, 1,278,000 accessions of Triticeae, belonging to 35 genera (among them 12 hybrid genera) and almost 300 species and, comprising one-fifth of the estimated world germplasm holdings, are doucmented. The survey includes data from 295 genebanks. Summaries of the world holdings per genus, species, regions where the genebanks are located, and the largest collections of the major genera are provided. For the larger genera, i.e., Triticum, Hordeum, × Triticosecale, Aegilops, Secale, Elymus and Agropyron, the worldwide germplasm collections are surveyed with more details. Existing international or regional cooperation programmes, germplasm databases and cultivar registers with pedigree information for these genera are briefly described. For the major cereal crops, core collections and genetic stocks collections are also mentioned. Due to its growing importance as a model plant in genomics research, the genus Brachypodium closely related to the Triticeae is also included in the surveys. The paper aims at providing background information for plant breeders and crop plant researchers on the germplasm available in ex situ genebank collections, to make this wealth of material more easily accessible.
Keywords
Genetic Resource Core Collection Wheat Breeding Forage Grass Genetic StockNotes
Acknowledgments
The present study could not have been compiled without the invaluable support, contributions and discussions from numerous colleagues from the world of Triticeae taxonomy and nomenclature, and from genebank curators and information managers in genetic resources. I am grateful to all of them. Mary Barkworth and Roland von Bothmer provided useful comments on Triticeae classification and nomenclature and checked hundreds of names for the synonymy, but also suggested improvements to earlier versions of this manuscript. Laura Morrison commented especially on names in Triticum and Aegilops. Tom Payne provided information about the Wheat Strategy of the Global Crop Diversity Trust, and Jan Valkoun on the Barley Strategy. John Wiersema supported the study with providing taxonomic and other data from GRIN, and with relevant discussions. Adugna Abdi Woldesemayat updated me on the holdings of the Institute of Biodiversity Conservation and Research, Addis Ababa, Ethiopia, Iva Faberová provided summary information from the Czech genebank and the European Wheat Database, Edson Jair Iorczeski informed about the Triticeae holdings of Brazilian genebanks, Gert Kleijer sent information from the European Triticale Database, Jan Konopka provided data from the Global Barley Register (in progress), Giambattista Polignano updated information about the Bari Genebank in Italy, Marcin Zaczyński sent data from the European Secale Database. I am grateful to the anonymous reviewer for corrections and useful suggestions of an earlier version of the manuscript. Catherine Feuillet provided continuous support and encouragement as well as valuable advice for improving and completing the coverage of the chapter. Finally, I wish to thank my colleagues Andreas Börner, Annette Weidner and Benjamin Kilian for helpful discussions and information, and Markus Oppermann for assistance in providing IPK’s passport data.
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