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. 2017 Nov 7;7:14744. doi: 10.1038/s41598-017-15241-8

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Flowering habits and pollen fertility characteristics. (a and b) Flowering habits of PS006 and PS012. (a) Flowering distribution of spikelets on a panicle of PS006 (blue dotted line) compared with PS012 (purple solid line). (b) Stigma exsertion characteristics of PS006 (black) and PS012 (white) grown under natural conditions. (c and d) Characteristics of pollen fertility in Wuhan and Hainan. (c) Changes in pollen fertility of PS006 (blue) and PS012 (purple) in 2007 (dotted line) and 2008 (solid line) in Wuhan. (d) Changes in pollen fertility of PS006 (blue) and PS012 (purple) in 2008 (dotted line) and 2009 (solid line) in Hainan.