* Corresponding author. Tel./fax: þ86 25 84395980.
E-mail address: gqs@njau.edu.cn (Q.-s. Guo).
Contents lists available at ScienceDirect
Biochemical Systematics and Ecology
journal homepage: www.elsevier.com/locate/biochemsyseco
http://dx.doi.org/10.1016/j.bse.2014.03.038
0305-1978/ 2014 Elsevier Ltd. All rights reserved.