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Genetic Diversity and Domestication History in Pyrus

  • Gayle M. VolkEmail author
  • Amandine Cornille
Chapter
  • 221 Downloads
Part of the Compendium of Plant Genomes book series (CPG)

Abstract

The cultivated pear is a major fruit crop in Eurasia that underpins many local economies. However, its origin and domestication history, as well as the diversity of wild pears in natural ecosystems, are at the early stages of exploration. In this chapter, we provide an overview of the described diversity and genetic relationships among wild and cultivated Pyrus species. Non-discriminatory morphological characters, poor diagnostic genetic tools, and lack of access to samples scattered throughout worldwide genebank collections make it difficult to definitively elucidate relationships of pear species and more generally Pyrus diversification and domestication. High-throughput sequencing is providing advancements in our understanding of the domestication process of the pear, and of biogeography, taxonomy, and ecology of wild pears. This knowledge will be crucial for future breeding programs focused on improving quality and production traits.

Keywords

Cultivated Differentiation Disease resistance Hybridization of pear Wild species 

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Copyright information

© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2019

Authors and Affiliations

  1. 1.USDA-ARS National Laboratory for Genetic Resources PreservationFort CollinsUSA
  2. 2.Génétique Quantitative et Evolution—Le Moulon, INRAUniv. Paris-Sud, CNRS, AgroParisTech, Université Paris-SaclayGif-Sur-YvetteFrance

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