. Author manuscript; available in PMC: 2016 Oct 31.
Published in final edited form as: Crop Sci. 2016 Mar 23;56(3):990–1000. doi: 10.2135/cropsci2015.07.0410
This is an open access article distributed under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).