Reading assignments (Abstract, Introduction, and Conclusions/Discussion for both papers).
Schnable, P. and N. Springer. 2013. Progress toward understanding heterosis in crop plants. Annu. Rev. Plant Biol. 64:71-88.
Cuesta-Marcos, A. et al. 2015. The relationships between development and low temperature tolerance in barley near isogenic lines differing in flowering behavior. Plant Cell Physiol. 56:2312-2324.