@article {3570,
	title = {Heterosis in poplar involves phenotypic stability: Cottonwood hybrids outperform their parental species at suboptimal temperatures},
	journal = {Tree Phsyiology},
	volume = {38},
	year = {2018},
	pages = {789-800},
	author = {Zanewich, Karen P and Pearce, David W and Rood, Stewart B}
}
