Funding for this research was provided by:
National Key Research and Development Program for Crop Breeding (2016YFD0101407)
National Natural Science Foundation of China (31671741)
Article History
Received: 29 September 2017
Revised: 30 January 2018
Accepted: 20 March 2018
First Online: 7 April 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.