Kerrie Barry

INTRODUCTION Sorghum bicolor (sorghum) is a drought and heat-tolerant C4 grass used to produce grain, forage, and biomass on approximately 50 m ha worldwide, serving as a subsistence crop in some regions of the semiarid tropics. The species has a large and diverse germplasm collection (approximately 57 000 accessions) (https://www.grin-global.org/) that largely originates from the diverse eco-regions of Africa, sorghum's center of origin.

Keywords sugarcane Saccharum polyploid repeated k-mers genome ancestry domestication admixture unknown ancestor chloroplast phylogeny transposable elements Introduction Interspecific hybridization and polyploidization are major evolutionary forces in plants. They complicate the reconstruction of phylogenetic relationships between taxa, especially in higher-order polyploids. Reference genome assemblies and resequencing data have greatly helped unravel those relationships.

Abstract E. grandis is a hardwood tree used worldwide as pure species or hybrid partner to breed fast-growing plantation forestry crops that serve as feedstocks of timber and lignocellulosic biomass for pulp, paper, biomaterials and biorefinery products. The current v2.0 genome reference for the species (Bartholome et al., 2015; Myburg et al., 2014) served as the first reference for the genus and has helped drive the development of molecular breeding tools for eucalypts.